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Biology STAAR All RC review

Total questions: 122

Worksheet time: 2hrs 31mins

Name
Class
Date
1.

DNA & RNA are

a)

Carbohydrates

b)

Proteins

c)

Lipids

d)

Nucleic Acids

2.

____________________ consists of a phosphate group, 5-carbon sugar, and a nitrogen base

a)

monosaccharides

b)

nucleotides

c)

amino acids

d)

fatty acids

3.

___________________ are used for short term (quick) energy

a)

Carbohydrates

b)

Proteins

c)

Lipids

d)

Nucleic Acids

4.

Which organelle is the site of protein synthesis?

a)

Lysosomes

b)

Ribosomes

c)

Mitochondria

d)

Nucleus

5.

What two structures are found in plant cells and not animal cells?

a)

Nucleolus and vacuoles

b)

Mitochondria and Golgi Body

c)

Cell wall and chloroplast

d)

Ribosomes and Lysosomes

6.

What part of the cell maintains homeostasis?

a)

Cell wall

b)

Centrioles

c)

Cytoskeleton

d)

Cell membrane

7.

The ___________ binds to the ___________ of an enzyme to produce products.

a)

Substrate, Active site

b)

Lock, Key

c)

Organelle, Products

d)

Active Site, Substrate

8.

What do viruses have in common with living cells? They both...

a)

store genetic information

b)

have chloroplasts

c)

use glucose for cellular respiration

d)

have endoplasmic reticulum

9.

Which viral life cycle kills its host cell by lysing (exploding)?

a)

lytic

b)

mitosis

c)

lysogenic

d)

S phase

10.

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. Once a virus gains entry to the body, it invades a host cell in order to --

a)

deactivate the host cell's defences

b)

synthesize antibodies for defence

c)

metabolize host proteins and grow

d)

access cellular processes for replication

11.
a)
Cytokinesis
b)
Interphase
c)
Anaphase
d)
Metaphase
12.
How do viruses reproduce?
a)
They copy their own genetic material inside a protein coat.
b)
They kill a cell and reproduce inside it.
c)
They invade a living cell and use the cell's functions to replicate their genetic material.
d)
They do not reproduce because they are not technically living things.
13.
This cell is undergoing mitosis.  What stage of mitosis is shown?
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
14.
Which of the following is a possible result of a disruption in the cell cycle?
a)
cancer
b)
photosynthesis
c)
cellular respiration
d)
protein synthesis
15.
During which phase of the cell cycle does the cell spend the most time?
a)
Mitosis
b)
Cytokinesis
c)
Interphase
16.
During which part of the cell cycle does the cell divide?
a)
Interphase
b)
Mitosis
c)
S phase
17.
During which part of the cell cycle is DNA copied?
a)
Mitosis
b)
Cytokinesis
c)
S phase
18.

What best explains the role of cellular division?

a)

to grow, develop, and repair tissue

b)

to eliminate unneeded cells

c)

to produce egg and sperm cells

d)

to eliminate waste from your body

19.
What is cell differentiation?
a)
Process by which cells produce more cells
b)
Process by which cells become specialized
c)
Process by which cells become unspecialized
d)
Process by which cells die
20.
What is one goal of cellular differentiation/specialization?
a)
To create specialized cells to help organism maintain homeostasis.
b)
To many cells.
c)
To make stem cells
d)
to make single celled organisms
21.
what is the role of stem cells in the body 
a)
fight against infection 
b)
provide specialized roles in the body 
c)
used for fertility treatment 
d)
they produce new specialized cells in the body to replace old cells that are used up 
22.
What is the importance of apoptosis?
a)
To eliminate damaged or unnecessary cells
b)
To create specialized cells
c)
To produce two identical cells
d)
To cause uncontrolled cell growth
23.
What is one goal of cellular differentiation/specialization?
a)
To create specialized cells to help organism maintain homeostasis.
b)
To many cells.
c)
To make stem cells
d)
to make single celled organisms
24.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
25.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
26.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
27.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
28.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
29.

If a DNA molecule consists of 30% Guanine, how much Adenine will it contain?

a)

30%

b)

60%

c)

40%

d)

20%

30.
What do we call the process of turning DNA into mRNA?
a)
Translation
b)
Transcription 
c)
Replication
31.
What process is occurring in this photo?
a)
Transcription
b)
DNA unwinding
c)
Translation
d)
Transfer RNA is creating bases
32.
What process is occurring in this photo?
a)
Transcription
b)
Translation
c)
mRNA is matching with amino acids
d)
tRNA is transcribing the DNA
33.
What is the correct amino acid sequence for the mRNA code AUGCCAGUAUGA?
a)
 Met-Pro-Val-Stop
b)
Met-Pro-Arg-Stop
c)
 Tyr-Gly-His
d)
Tyr-Gly-Arg-His
34.
Which phase of which process does this picture show?
a)
Transcription
b)
Translation
c)
Replication
d)
Cloning
35.
What is the relationship between a protein, the cell, and DNA?
a)
DNA is produced by protein which is produced in the cell
b)
Protein is composed of DNA which is produced in the cell
c)
DNA makes RNA which produces protein in the cell
d)
A cell is composed of DNA and protein
36.

What mutation has occurred here?

T-G-A-C-C-A

T-G-A-G-C-A

a)

Substitution

b)

Deletion

c)

Insertion

d)

Frameshift

37.

DNA molecule segment is : TTACGCAAG

The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.

a)

Substitution

b)

Deletion

c)

Insertion

d)

Inversion

38.

A mutation is defined as:

a)

A change in the cell's structure

b)

Anything that changes in an embryo

c)

Any change in the physical features of a human

d)

A change in the DNA sequence

39.

Why are insertion and deletion (frameshift) mutations so harmful?

a)

They change all of the codons from the mutation on down the line, which changes the amino acid sequence

b)

They insert things that an organism doesn't need.

c)

They often delete things that organisms need.

d)

Insertion and deletions are not any more harmful than substitution mutations.

40.

The variety of genes and alleles that exist in organisms

a)

independent assortment

b)

chromosomal abnormalities

c)

genetic diversity

d)

mutations

41.

This law describes how each member of a homologous pair is pulled randomly to one side or another in anaphase I

a)

Law of Segregation

b)

Law of Independent Assortment

c)

Law of Gravity

d)

Law of Mathematical Order

42.

The exchange of pieces of chromatin between homologous chromosomes during Prophase I of meiosis is called

a)

independent assortment

b)

mutation

c)

crossing over

d)

random fertilization

43.

Which process is shown in the image?

a)

crossing over

b)

independent assortment

c)

segregation

d)

mutation

44.
Crossing over is important because....
a)
It prevents mutations from entering the gametes. 
b)
It allows for even distribution of chromosomes in the gametes.
c)
It allows for more genetic diversity of gametes.
d)
It allows for genetic uniformity of gametes. 
45.
The scientific theory of evolution is supported by different types of evidence. The diagrams below show the skeletons of two different animal species. How does comparing the skeletons of these animals provide support for the scientific theory of evolution?
a)
 It provides information about the organisms' habitats.
b)
 It shows possible common ancestry between organisms.
c)
It provides information to determine the organisms' ages.
d)
It shows possible chromosomal similarities between organisms.
46.
The diagram illustrates an embryonic stage of two organisms.Which of the following can be determined by observing the embryos shown in the diagram? 
a)
The organisms share a common ancestry.
b)
The organisms belong to the same genus.
c)
The organisms are native to the same geographic areas.
d)
The organisms will grow into anatomically similar adults.
47.
 The diagram represents the relationship between beak structure and food in several species of finches found on the Galapagos Islands. The different beak structures observed in the diagram are evidence of
a)
 different species of finches adapting to different environments over many generations
b)
 finches changing their beak characteristics so that they could feed efficiently
c)
finch species with different beak structures coming to the Galapagos Islands from the mainland
d)
 finches mating with birds of other species and acquiring some of their traits
48.
Which occurrence represents an example of evolution?
a)
 Exposure to radiation reduces the rate of mutation in leaf cells.
b)
A mutation in a liver cell causes a person to produce an enzyme that is less efficient.
c)
 Cells in a zygote eventually change into bone cells or skin cells
d)
Some antibiotics are almost useless, because pathogens have developed a resistance to these antibiotics.
49.
The environment around Manchester, England, changed during the Industrial Revolution.  How did this change affect peppered moths living in the area?
a)
Natural selection favored moths with dark wings because predators could not see them on the soot-colored trees.
b)
Natural selection favored moths with white wings that were easy for predators to see.
c)
Natural selection favored moths with white wings because predators could not see them on the soot-colored trees.
d)
Natural selection caused moths with white wings to become extinct.
50.
A virus killed most of the seals in the North Sea (e.g. dropped the population from    8000 to 800).  In an effort to help preserve the species, scientists caught 20 of the   remaining seals and used them to start a new population in the northwest Pacific   Ocean.  Which of the following statements would accurately describe the new   population?  
a)
The new seal population is genetically less diverse than the original population 
b)
The new seal population is genetically more diverse than the original population
c)
There is equal genetic variety compared  to the original population 
d)
None of the answers
51.
Genetic drift is change in the allele frequency of a population due to...
a)
random chance
b)
natural selection
c)
non-random mating (sexual selection)
d)
artificial selection
52.
This mechanism of evolution occurs when populations migrate.
a)
Extinction
b)
Gene flow
c)
Genetic drift
d)
Natural Selection
53.
The change over time in populations of related species.
a)
biological evolution
b)
transition
c)
variation
d)
adaptation
54.
Body parts of organisms that are the same in structure and position but different in function.
a)
embryos
b)
homologous structures
c)
analogous structures
d)
vestigial structures
55.
Body parts that function like each other, but are different in structure.
a)
embryos
b)
homologous structures
c)
analogous structures
d)
vestigial structures
56.
Body parts that have lost their original function.
a)
embryos
b)
homologous structures
c)
analogous structures
d)
vestigial structures
57.
When an organism of a species has an adaptation, it will compete for resources better, survive longer and pass that adaptation on to it's offspring. This process is called
a)
evolution by natural selection
b)
artificial selection
c)
inbreeding
d)
outbreeding
58.
Where the better adapted organisms survive to pass traits along to offspring.
a)
Evolution
b)
Natural Selection
c)
Extinction
d)
Artifical Selection
59.
Why are advantageous traits more likely to be passed onto offspring?
a)
Because they are more likely to survive and reproduce.
b)
Because they come from dominant alleles.
c)
Because they come from recessive alleles.
d)
Because the trait is an acquired phenotype.
60.
Why is the mouse population changing over time?
a)
The light mice can reproduce more successfully than the dark mice
b)
The hawks eat more dark mice than light mice because the dark mice taste better
c)
The hawks eat more light mice than dark mice because they can see the light mice more easily
d)
The hawks eat more dark mice than light mice because they can see the dark mice more easily
61.
Which of the following organisms are LEAST closely related?
a)
organisms that share a domain
b)
organisms that share a family 
c)
organisms that share a genus 
d)
organisms that share a species 
62.
The scientific name for an organism is made from the:
a)
class and family name
b)
genus and species name
c)
domain and kingdom name
d)
kingdom and phylum name
63.
The 8 levels of classification, most broad to most specific.
a)
Domain, Genus, Family, Order, Class, Phylum, Kingdom, Species
b)
Domain, Species, Kingdom, Genus, Phylum, Family, Class, Order
c)
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
d)
Order, Kingdom, Species, Domain, Phylum, Family, Class, Genus
64.
Term given to describe the 2 name naming system is:
a)
dichotmous key
b)
binomial nomenclature
c)
2 scientific names
d)
binomial key
65.
Cells that do not have a true nucleus are called....
a)
eukaryote
b)
prokaryote
c)
unicellular
d)
multicellular
66.
An illustration and a dichotomous key are given. What is the correct classification for this organism?
a)
Class Insecta
b)
Order Amblygygi
c)
Order Araneae
d)
Order Scorpiones
67.

A student discovers an arachnid without a segmented abdomen, and legs longer than its body. The student uses the dichotomous key below to identify it. Which arachnid has the student found?

a)

Whip Scorpion

b)

Wind Scorpion

c)

Daddy long legs

d)

Scorpion

68.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
69.
All polymers are made up of...
a)
monosaccharides
b)
monomers
c)
proteins
d)
None of these
70.
Name this biomolecule
a)
carbohydrate
b)
lipid
c)
nucleic acid
d)
protein
71.
What is the function of nucleic acids?
a)
Stores energy
b)
Stores genetic information
c)
Movement
d)
Physical structure
72.
Which 2 molecules contains the elements C-H-O and function pertains to energy?
a)
Lipids and Protein
b)
Carbohydrates and Nucleic Acids
c)
Protein and Carbohydrates
d)
Carbohydrates and Lipids
73.

Which of the following converts food into energy for the cell?

a)

vacuole

b)

mitochondria

c)

cytoplasm

d)

cell membrane

74.

Which organelle takes in "sun showers" and helps plants with the process or photosynthesis?

a)

Vacuole

b)

Mitochondria

c)

Cytoplasm

d)

Chloroplast

75.
Which of the following is the smallest unit of life that can carry out all life functions?
a)
the mitochondria
b)
the vacuoles
c)
the nucleus
d)
the cell
76.
Which cell structure is found in plant and animals cells and controls what can come into or leave a cell?
a)
cell membrane
b)
cytoplasm
c)
nucleus
d)
vacuole
77.

What are the 3 reactants of photosynthesis? The reactants are the things needed for photosynthesis to occur.

a)

oxygen, glucose, sunlight

b)

sunlight, oxygen, water

c)

water, oxygen, carbon dioxide

d)

carbon dioxide, sunlight, water

78.

What pigment captures/absorbs sunlight?

a)

stomata

b)

chlorophyll

c)

chloroplast

d)

phloem

79.

What is the tiny openings that let in the carbon dioxide needed for photosynthesis?

a)

stomata

b)

xylem

c)

phloem

d)

chloroplast

80.

How does water travel from the roots to the plan leaf? Name the structure that carries water.

a)

stomata

b)

phloem

c)

chloroplast

d)

xylem

81.

What are the 2 products of photosynthesis? The products are the things made in the process of photosynthesis.

a)

water, sunlight

b)

glucose, carbon dioxide

c)

oxygen, glucose

d)

sunlight, oxygen

82.
In which way are photosynthesis and cellular respiration different?
a)
Cellular respiration stores ATP, while photosynthesis releases ATP.
b)
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
c)
Photosynthesis releases energy, while cellular respiration stores energy.
d)
Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.
83.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
84.

True or False: Only animals can undergo Cellular Respiration.

a)

True

b)

False

85.
 Invasive plant species affect the interactions of living and nonliving components of an ecosystem, so the removal of invasive plants is often necessary. The goal of most plant-control methods is to disrupt or inhibit the function of different plant systems. For example, insects can be used to chew through roots in order to reduce a plant’s ability to absorb water.
Which of these functions would be most immediately affected by a reduction in water uptake by roots?
a)
Disease resistance 
b)
Seed dispersal
c)
Sunlight absorption
d)
Photosynthesis 
86.
A student reads this advertisement for a product containing a plant micronutrient that can be added to soil.
Based on this information, the student can conclude that boron is absorbed by plant roots from soil and then —
a)
transported to reproductive tissues by the plant’s shoot system
b)
stored in plant stems until the flowers are pollinated
c)
concentrated in the roots until the plant’s reproductive tissues mature
d)
transported by the phloem to the stomata in leaves, where it attracts pollinators
87.
 A student conducted an investigation to study phototropism in grasses. The only difference between the control group and the experimental group was light conditions. The control group was provided full light, while the experimental group was shaded on one side. The diagrams show the average heights and positions of blades of grass in the investigation.
Which statement best explains why the grass tips of the experimental group bent toward the light?
a)
Water evaporated faster on the side of the plant having full light
b)
Light sensors in the grass tips stimulated a hormone in the shoot system.
c)
The xylem in the root system absorbed more nutrients from the shaded side.
d)
The side facing the light has a greater chance of absorbing carbon dioxide from the atmosphere.
88.
A student studying interactions between body systems constructs this table. The student plans to fill out the table with phrases that describe an interaction between each pair of systems. 
Which of these phrases could be placed in the position marked with an X? 
a)
Provides nutrients to kidney cells
b)
Provides nutrients to brain cells
c)
Provides nutrients to nerve cells
d)
Provides nutrients to muscle cells 
89.
 Recent studies in bone research indicate that using ultrasound on a broken bone can decrease the healing time by 25%. Which of these are the most basic levels of organization involved when a bone heals? 
a)
Cells and tissue
b)
Cells and organ system
c)
Organ system and organism
d)
Tissue and organ system
90.
Which of the following is an example of the endocrine system directly interacting with the nervous system?
a)
The vertebrae protect the spinal cord from injury.
b)
Hormones provide feedback that affects neural processing.
c)
Sensory receptors in bones send signals about body position to the brain. 
d)
The brain sends signals that control the speed at which food moves through the intestines.
91.
Cytokinins are a class of plant hormones that help regulate growth by promoting cell division. Cytokinins are produced mainly in meristematic tissue, where most plant growth occurs. Which system carries cytokinins produced in the roots to the rest of the plant?
a)
Vascular system
b)
Dermal system
c)
Reproductive system
d)
None of these
92.
 During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. The release of oxytocin during labor stimulates the smooth muscle tissue in the wall of the uterus. The vigorous contraction of the uterine smooth muscle helps push the baby through the birth canal so that delivery can occur. This process involves the interaction of which organ systems? 
a)
Endocrine and muscular only
b)
Endocrine and reproductive only
c)
Endocrine, muscular, and reproductive
d)
Endocrine, reproductive, and excretory
93.

Scientists studying illnesses caused by chemically contaminated food conduct research to minimize the effects of these diseases on society. These chemicals harm the body through interactions between the digestive system and the immune system. Scientists conducting this research are likely to describe which of these interactions between the digestive and immune systems?

a)

Chemicals enter the immune system through a break in the skin. The chemical contamination is then passed to the digestive system by the circulatory system.

b)

The immune system transforms the chemicals in the contaminated foods into harmless chemicals. These harmless chemicals are then broken down by the digestive system.

c)

When contaminated foods are eaten, the immune system prevents the chemicals from entering the digestive system.

d)

Chemicals enter the digestive system through contaminated foods. Once in the body, the chemical contaminants impair the body’s ability to fight off infectious diseases.

94.

Animal body systems often coordinate their actions to carry out specific functions for the whole animal. Which of these correctly describes the interaction of two biological systems for a specific purpose in the human body?

a)
b)
c)
d)
95.

Toxoplasmosis is an infection producing brain lesions caused by the parasitic protozoan Toxoplasma gondii. Mice with their gonads removed are more resistant to T. gondii and develop very few lesions on their brain tissue. The graph shows the results of a scientific study of normal adult mice infected with T. gondii.


Which systems most likely interact and cause the severity of infections to vary?

a)

Muscular and skeletal

b)

Immune and endocrine

c)

Excretory and respiratory

d)

Nervous and integumentary

96.

When you eat food, a hormone is secreted by the pancreas to control the amount of sugar or glucose levels in your blood, called insulin. What systems work together to produce and transport this hormone?

a)

Digestive and Nervous

b)

Circulatory and Endocrine

c)

Immune and Endocrine

d)

Muscular and Nervous

97.

Which level of organization is listed correctly from simple to complex?

a)

Organelle, organ, organ system, tissue, cell

b)

Cell, tissue, organ, organ system, organism

c)

Organism, organ system, organ, tissue, cell

d)

cell, tissue, organ system, organ, organelle

98.
How do lichens contribute to primary succession?
a)
Lichens decompose organic matter from animals and plants
b)
Lichens begin to break down rock to form soil
c)
Lichens are nitrogen fixing bacteria
d)
Lichens convert carbohydrates into fossil fuels.
99.
What is formed during primary succession that doesn't need to be formed during secondary succession?
a)
pioneer species
b)
soil
c)
climax community
d)
lichens
100.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
101.
After a forest fire, an ecosystem would start regrowth through -
a)
primary succession
b)
secondary succession
c)
climax community
d)
limiting factors
102.
succession that occurs in an area with no soil
a)
ecological succession 
b)
primary succession 
c)
secondary succession
d)
pioneer speciles
103.
starts with bare rock followed by lichen
a)
primary succession 
b)
secondary succession
c)
both types of succession
104.
Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales.
a)
commensalism
b)
parasitism
c)
mutualism
105.
Mistletoe extracts water and nutrients from the spruce tree to the tree's detriment.
a)
commensalism
b)
parasitisim
c)
mutualism
106.
Oxpeckers feed on the ticks found on rhinoceros. Both species benefit.
a)
commensalism
b)
parasitism
c)
mutualism
107.
A flea feeds on a mouse's blood to the mouse's detriment.
a)
commensalism
b)
parasitism
c)
mutualism
108.
Ticks feed on deer blood to the deer's detriment.
a)
commensalism
b)
parasitism
c)
mutualism
109.

Wrasse fish feed on the parasites found on the black sea bass's body. Both species benefit.

a)

commensalism

b)

parasitism

c)

mutualism

110.
In the food web shown, the snail would be considered...
a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
111.
Which of these is true about this food web?
a)
The Owl gets its energy from the producer.
b)
The Lion gets its energy only from a wild cat.
c)
The Kite gets its energy from the goat.
d)
The Mouse is most likely to die, several ways.
112.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
113.
Identify the correct food chain that demonstrates the energy flow of this food web
a)
Plant > Caterpillar > Bluebird > Eagle
b)
Plant > Lizard > Snail
c)
Plant >Lizard > Snail >Eagle
d)
Eagle >Lizard>Caterpillar>Plant
114.
In this food pyramid, which level has the greatest amount of energy?
a)
Producers
b)
Primary Consumers
c)
Secondary Consumers
d)
Tertiary Consumers
115.
How much energy is passed from one trophic level to the next?
a)
1%
b)
10%
c)
50%
d)
100%
116.
All are an example of Natural Selection Except...
a)
the dark colored frogs out last the light colored frogs
b)
selecting two chickens to make more big chickens
c)
the brown moths were able to create more offspring because they were able to hide
d)
The colorful fish are able to pass off their variation to their offspring to survive
117.
What are adaptations?
a)
traits that help an organism to survive and reproduce
b)
traits that help an organism hide
c)
traits that help an organism to seek protection
d)
traits that help an organism to see.
118.
Why do some organisms hibernate?
a)
To get some rest
b)
To escape harsh winters and maintain homeostasis
c)
To be the bearer of bad news
d)
To strive for greatness with rest
119.

What does camouflage mean?

a)

are the things organisms do to survive

b)

an organisms ability to look like another animal

c)

an organism ability to blend in with its surroundings or environment

120.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
121.
Indicates the greatest number of any species that can indefinitely exist within a specific habitat without threatening the existence of other species also living in that habitat
a)
carrying capacity
b)
population density
c)
population
d)
population demographics
122.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.

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