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WorksheetsLife Science HMWK2
Total questions: 21
Worksheet time: 24mins
Name
Class
Date
1.
What is homeostasis?
a)
a sac-shaped organ that makes bile, stores and filters blood, and stores excess sugars
b)
the maintenance of a stable internal environment in the body
c)
a substance that is made in one cell or tissue and that causes a change in another cell or tissue in a different part of the body
d)
a nerve cell that is specialized to receive and conduct electrical impulses
2.
What is the cardiovascular system?
a)
a collection of organs whose primary function is to take in oxygen and expel carbon dioxide
b)
one of the two tubes that connect the lungs with the trachea
c)
the organs that produce, store, and eliminate urine
d)
a collection of organs that transport blood throughout the body
3.
What is the digestive system?
a)
the organ system whose primary function is to support and protect the body and to allow the body to move
b)
the organs that break down food so that it can be used by the body
c)
a collection of glands and groups of cells that secrete hormones that regulate growth, development, and homeostasis
d)
a collection of organs whose primary function is to collect extracellular fluid and return it to the blood
4.
What is the respiratory system?
a)
a collection of glands and groups of cells that secrete hormones that regulate growth, development, and homeostasis
b)
the organs that produce, store, and eliminate urine
c)
a collection of organs whose primary function is to collect extracellular fluid and return it to the blood
d)
a collection of organs whose primary function is to take in oxygen and expel carbon dioxide
5.
The organelle that uses the energy of sunlight to make food for the cell.
a)
Chloroplast
b)
Ribosome
c)
Mitochondria
d)
Nucleus
6.
Contains the Cell's DNA and is a part of the processes of growth, metabolism, and reproduction.
a)
Downy
b)
Nucleus
c)
Cell Wall
d)
Golgi Complex
7.
The organelle that stores water and other materials.
a)
Nucleus
b)
Large Vacuole
c)
Chloroplast
d)
Large Nucleus
8.
The nonliving aspects of an ecosystem.
a)
Abiotic factors
b)
Biotic factors
9.
Organisms that feed on both living producers and other consumers.
a)
Carnivores
b)
Omnivores
c)
Herbivores
d)
Detritivores
10.
An organism at the second trophic level would be considered a...
a)
Top carnivore
b)
Producer
c)
Herbivore
d)
Carnivore
11.
Autotrophs make up the _______ level in all ecosystems.
a)
First
b)
Second
c)
Third
d)
Fourth
12.
What type of symbiosis?
* The Red-Chested cuckoo birds find an unattended robin nest, push out the robin eggs, and lay their eggs in the robin’s nest, and leave.
* Robin babies die and robin parents feed and take care of the cuckoo babies.
* The Red-Chested cuckoo birds find an unattended robin nest, push out the robin eggs, and lay their eggs in the robin’s nest, and leave.
* Robin babies die and robin parents feed and take care of the cuckoo babies.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
13.
What is an organism that gets its food through eating other sources?
a)
Consumer
b)
Producer
c)
Autotroph
d)
Decomposers
14.
What Is A Predator?
a)
Neither
b)
A Organism That Is Killed
c)
An Organism That Hunts and Kills
15.
Logging, mining, farming, and construction will result in
a)
primary succsession
b)
secondary succession
c)
tertiary succession
16.
Male giraffes fighting for a female giraffe is an example of
a)
competition
b)
predation
c)
symbiosis
d)
craziness!
17.
A series of predictable changes that occur in a community over time
a)
succession
b)
success
c)
succeed
d)
changes
18.
Sunlight, water, oxygen, temperature, and soil are all
a)
biotic factors
b)
abiotic factors
c)
living things
d)
homeostasis
19.
What is prey?
a)
An organism that is killed
b)
An organism that kills
c)
neither
20.
Maria and her classmates are observing animals at the pond. They notice that wood storks and ibisies both feed on fish. Which of these describes the relationship between these two birds.
a)
Parasitism
b)
Competition
c)
Predator and prey
d)
Producer and consumer
21.
What is an advantage of sexual reproduction?
a)
genetic variation
b)
lots of offspring
c)
weaker offpsring
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