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ABF STAAR Biology RC 05 Part 04 Energy Flow in the Ecosystem

Total questions: 58

Worksheet time: 1hrs 23mins

Name
Class
Date
1.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
2.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
3.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
How plants create their own food.
d)
A single path of energy transfer within a habitat.
4.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
5.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
6.
An energy pyramid represents what?
a)
How much sunlight is available for the ecosystem to use. 
b)
How much energy a particular organism needs. 
c)
How much energy is needed to build a pyramid. 
d)
The amount of energy available to the next 'feeder' in a food web.
7.
How much energy is available to be passed on to the next trophic level in an ecosystem?
a)
100%
b)
10%
c)
50%
d)
75%
8.
Why is there a limited amount of energy that can be passed on to the next feeding level?
a)
There is never enough sunlight available. 
b)
Some ecosystems have limited resources. 
c)
Organisms use some of the energy they get from eating.
d)
All the energy is available to be passed on. 
9.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
10.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
11.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
12.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
13.
The mouse in this food web would be considered a:
a)
Primary Consumer
b)
Producer
c)
Tertiary Consumer
d)
Secondary Consumer
14.
The image provided is an example of a(n):
a)
Autotroph
b)
Carnivore
c)
Herbivore
d)
Decomposer
15.
The food web shows the flow of energy through a sagebrush-steppe ecosystem.
Which of these organisms are in a trophic level that receives a larger percentage of the energy captures by the producers than the percentage received at the bats' trophic level?
a)
Mountain lions
b)
Snakes
c)
Hawks
d)
Ground squirrels
16.
Below is a food web diagram. Based on the diagram, it is reasonable to conclude that energy could follow which of the following paths as it cycles through this ecosystem?
a)
Sun ---> plant seeds ---> deer
b)
Plant seeds ---> field mouse ---> robin
c)
Eagle ---> deer ---> plant seeds
d)
Grass ---> deer ---> mountain lion
17.
How would the deaths of many individual organisms due to a random event such as a flood or fire most likely affect a population of plants?
a)
Adaptations would appear more quickly
b)
Biodiversity in the population would increase.
c)
Population size would decrease.
d)
New methods of reproduction would evolve.
18.

Which group of organisms is missing from the food web above?

a)

Carnivore

b)

Herbivore

c)

Omnivore

d)

Decomposer

19.

Looking at the chart below what type of organism is the Alaskan brown bear?

a)

Carnivore

b)

Herbivore

c)

Omnivore

d)

Decomposer

20.

In the Indian River Lagoon System, many organisms compete for food. Which organism in the food web competes with the egrets for food?

a)

Clam worm

b)

Crab

c)

Flounder

d)

Heron

21.

Which of the following statements most accurately describes the energy transfer between the levels of the food pyramid in the Indian River Lagoon System?

a)

Energy travels up the pyramid

b)

Energy stays in the phytoplankton at the lowest level

c)

Energy is released in the environment only at the top level

d)

Energy moves from the flounder to both the clam and the egret

22.

How much energy will be available for the flounder if the plankton at the bottom of this pyramid is able to produce 10,000 kcal of energy from the photosynthesis?

a)

1000

b)

100

c)

10

d)

1

23.

What is the primary source of energy for the ecosystem pictured above?

a)

Grass and Green plants

b)

Hawks and Deer

c)

Tadpoles and Fish

d)

Sun

24.

Observe the food chain below. What would be the result of disease killing off most of the mouse population?

a)

All populations would be relatively unaffected

b)

The grasshoppers would become extinct

c)

The grasshopper population would decrease; the owl population would increase

d)

The grasshopper population would increase and the owl population would decrease

25.
In a particular ecosystem, a white-tailed deer feeds on branches from a red oak tree. Gypsy moth caterpillars also feed on the leaves of the oak tree. Acorns from the tree fall to the soil. Those acorns that take root grow into new oak trees over time. Which of the following is an abiotic factor in this ecosystem?
a)
Type of Soil
b)
Species of Caterpillar
c)
Number of Trees
d)
Species of Deer
26.

Which of the following is a tertiary consumer from the food web shown?

a)

Kite

b)

Owl

c)

Jackal

d)

Tree

27.

Which two organisms compete for the rabbit for energy?

a)

Mouse and Tree

b)

Owl and Goat

c)

Wildcat and Jackal

d)

Lion and Jackal

28.

A new species of hawk that feeds on snakes was introduced to this ecosystem. What is going to happen to the Kite population now that they are competing for snakes with the hawk?

a)

The kite population will increase.

b)

The hawks will have no influence on the population of kites because they have more food to eat.

c)

The kite will become better adapted to the environment.

d)

The kite population will decrease because they are now competing for food with the hawk.

29.

In this food web, which of the following organisms eats the largest variety of different producers?

a)

Mouse

b)

Grasshopper

c)

Dragonfly

d)

Butterfly

30.
A student has set up an artificial ecosystem for a class project. This ecosystem has producers, first-level consumers, second-level consumers, and third-level consumers. By accident, a chemical enters the ecosystem and kills all of the first-level consumers. Which group(s) of organisms will most likely survive?
a)
Producers
b)
second-level consumers
c)
second-level and third-level consumers
d)
third-level consumers and producers
31.

Which type of interaction exists between shrimp and blue crabs in this food web?

a)

Blue crabs prey on shrimp.

b)

Shrimp compete with blue crabs for food.

c)

Shrimp help blue crabs filter polluted water.

d)

Shrimp decompose matter for blue crabs.

32.
How can energy be transferred from one organism to another?
a)
The energy stored in the molecules of one organism is transferred to another organism.
b)
The matter stored in the molecules of one organism is transferred to another organism.
c)
The photosynthesis stored in the molecules of one organism is transferred to another organism.
33.
a)
Producer
b)
Primary Consumer
c)
Autotroph
d)
Decomposer
34.
What percentage of energy is passed on to each trophic level?
a)
10%
b)
50%
c)
90%
d)
100%
35.
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.
36.
Which of the following best describes the small bird in the food web above?
a)
primary and secondary consumer
b)
secondary and tertiary consumer
c)
primary consumer only
d)
secondary consumer only
37.

Why is some energy not passed on to the next trophic level?

a)

The organisms at each level use about 90% of the available energy to live.

b)

The statement is NOT true. All energy IS passed from one trophic level to the next.

c)

The organisms at each level use about 10% of the available energy to live.

d)

Most energy is absorbed by the soil instead.

38.
Does this food web have arrows pointing the right way?
a)
Yes
b)
No
39.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain organisms that can photosynthesize?
a)
A
b)
B
c)
C
d)
D
40.
If there are 100 kcal of energy available in the producers, how much energy would be available to the herbivores?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
41.
Which organism(s) in the food web above can be described as quaternary consumers?
a)
owl and mosquito
b)
mouse only
c)
small bird and owl
d)
owl only 
42.
Which organisms have the most energy? 
a)
ladybugs
b)
plants
c)
owl
d)
mosquitoes
43.
If these organisms were arranged in an ecological biomass pyramid, which organism would have the least amount of biomass?
a)
coyote
b)
insect
c)
lizard
d)
shrub
44.
If the small bird on trophic level 3 in the pyramid has 50 kcal of energy available, how many kcal of energy were present in the trees?
a)
5
b)
500
c)
5000
d)
0.5
45.
Which organisms would likely have the largest biomass?
a)
mountain lions and eagles
b)
snakes and frogs
c)
squirrels and deer
d)
flowers, trees and fruit
46.

Based on the energy pyramid, which of the following choices is represented by the trophic number 2?

a)

Producer

b)

Primary Consumer

c)

Secondary Consumer

d)

Tertiary Consumer

47.

Which trophic level does the primary consumer belong?

a)

First Trophic Level

b)

Second Trophic Level

c)

Third Trophic Level

d)

Fourth Trophic Level

48.

Which of the following organisms has the highest content of biomagnification?

a)

Blue Heron Bird

b)

Big Fish

c)

Snail

d)

phytoplankton and algae

49.

Which of the following organisms has the lowest content of biomagnification?

a)

Blue Heron Bird

b)

Big Fish

c)

Snail

d)

phytoplankton and algae

50.

Which of the following trophic level has the highest biomass in the ecosystem?

a)

producers

b)

primary consumer

c)

secondary consumer

d)

tertiary consumer

51.

Which of the following trophic level has the lowest biomass in the ecosystem?

a)

producers

b)

primary consumer

c)

secondary consumer

d)

tertiary consumer

52.

Based on the picture, which of the following is a correct statement for letter B?

a)

It represents the 90% loss of heat energy and the energy used by the organisms for bodily processes.

b)

It represents the decomposer (fungi/mushroom or bacteria) to breakdown dead organic matter to return (recycle) the nutrients back to the soil for plants' use.

c)

It represents the main energy source of the ecosystem that enters to the living tissue through the process of photosynthesis.

d)

It represents the producer and the consumer interactions in the ecosystem

53.

Based on the picture, which of the following is a correct statement for letter C?

a)

It represents the 90% loss of heat energy and the energy used by the organisms for bodily processes.

b)

It represents the decomposer (fungi/mushroom or bacteria) to breakdown dead organic matter to return (recycle) the nutrients back to the soil for plants' use.

c)

It represents the sun as the main energy source of the ecosystem that enters to the living tissue through the process of photosynthesis.

d)

It represents the producer and the consumer interactions in the ecosystem

54.

Based on the picture, which of the following is a correct statement for letter A?

a)

It represents the 90% loss of heat energy and the energy used by the organisms for bodily processes.

b)

It represents the decomposer (fungi/mushroom or bacteria) to breakdown dead organic matter to return (recycle) the nutrients back to the soil for plants' use.

c)

It represents the sun as the main energy source of the ecosystem that enters to the living tissue through the process of photosynthesis.

d)

It represents the producer and the consumer interactions in the ecosystem

55.

Which of the following organisms contributed the greatest to the amount of oxygen in the atmosphere?

a)

phytoplankton and algae

b)

zooplankton and small fishes

c)

the Blue Heron bird

d)

the snails

56.

Which of the following is the reason on why the phytoplankton and algae are two producers that contribute the most to the increase of oxygen in the atmosphere?

a)

phytoplankton and algae undergo the photosynthetic process using dissolved carbon dioxide and water to produce glucose/food/sugar and released oxygen to the atmosphere to be used by consumer for aerobic respiration

b)

phytoplankton and algae undergo the cellular respiration or aerobic process using dissolved carbon dioxide and water to produce glucose/food/sugar and released oxygen to the atmosphere to be used by consumer for photosynthesis

57.

A student noted an observation that there was an increased of Carbon dioxide and decreased amount of Oxygen in a controlled environment. Which of the following conclusion can you draw from this observation?

a)

Cellular process photosynthesis took place in the chloroplast that used Oxygen and released Carbon dioxide to the atmosphere

b)

Cellular process photosynthesis took place in the chloroplast that used Carbon dioxide and released Oxygen to the atmosphere

c)

Cellular process Cellular Respiration (A.K.A. Aerobic Respiration) took place in the mitochondria that used Carbon dioxide and released Oxygen to the atmosphere

d)

Cellular process Cellular Respiration (A.K.A. Aerobic Respiration) took place in the mitochondria that used Oxygen and released Carbon dioxide to the atmosphere

58.

Which of the following is the main interrelatedness of the cellular processes Photosynthesis and Cellular Respiration ?

a)

Photosynthesis products are the reactants of the Cellular Respiration while the products of Cellular Respirations are the reactants needed to produce the glucose.

b)

Photosynthesis reactants are the products of the Cellular Respiration while the reactants of Cellular Respirations are the products needed to produce the glucose.

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