Quiz about Unit 6 Flow of Energy in Ecosystems

Question 1

What happens to the solar energy absorbed by plants during photosynthesis?

Accepted Answer

It is transformed into chemical energy.

Answer

It is recycled by plants and returned to the atmosphere.

Answer

It is converted into oxygen and glucose

Answer

It is stored as heat within the plant for cellular functions

Question 2

What process converts radiant energy inot chemcial energy?

Accepted Answer

photosynthesis

Answer

respiration

Answer

phototropism

Answer

combustion

Question 3

The arrows in a food chain or web represents what?

Accepted Answer

They show what direction the energy is flowing between organisms.

Answer

They point to the organism that is being eaten.

Answer

It shows how sunlight flows within an ecosystem.

Answer

They represent how water is transferred within a habitat.

Question 4

An energy pyramid represents what?

Accepted Answer

The amount of energy available to the next 'feeder' in a food web.

Answer

How much sunlight is available for the ecosystem to use.

Answer

How much energy a particular organism needs.

Answer

How much energy is needed to build a pyramid.

Question 5

How much energy is available to be passed on to the next level in a food web?

Accepted Answer

10%

Answer

100%

Answer

50%

Answer

75%

Question 6

Which type of energy is formed during the process of photosynthesis?

Accepted Answer

chemical

Answer

radiant

Answer

thermal

Answer

kinetic

Question 7

The diagram below shows a desert food web.

How will a large decrease in the number of rats impact the food web shown above?

Accepted Answer

There will be a decrease in the number of snakes, coyotes, and hawks.

Answer

There will be an increase in the number of ants, tarantulas, and snakes.

Answer

There will be an increase in the number of snakes, coyotes, and hawks.

Answer

There will be a decrease in the number of cacti and sagebrush plants.

Question 8

The diagram shows a desert food web.

Which organisms above represent the producers?

Accepted Answer

Cacti and sagebrush

Answer

Hawks and coyotes

Answer

Ants and tarantulas

Answer

Rats and snakes

Question 9

Analyze the positions of the eagle and the snake in the food web pictured above. Which of the following statements is correct?

Accepted Answer

The eagle eats more types of organisms in the food web than the snake does.

Answer

The eagle eats the same types of organisms as the snake does.

Answer

The snake eats more types of organisms in the food web than theeagle does.

Answer

The snake is eaten by the same types of organisms as the eagle is.

Question 10

Analyze the food web above. Which animal receives the most energy originally produced by the plants in the food web?

Accepted Answer

rabbit

Answer

frog

Answer

owl

Answer

snake

Question 11

What do the arrows represent in the diagram of a food chain?

Accepted Answer

The direction of energy flow through organisms

Answer

The order of size of organisms in the ecosystem

Answer

The importance of organisms in the chain

Answer

The energy increases as you move from left to right

Question 12

Which of the following statements best describes the flow of energy in the energy pyramid above?

Accepted Answer

Each group receives only a small amount of the energy from the level below it.

Answer

As you go higher in the pyramid, the amount of energy increases.

Answer

There is less energy in a producer level than a consumer level.

Answer

There is no energy above the level of producers in the system.

Question 13

Animals are consumers, meaning they need to eat food for energy because they cannot make their own. Which energy transformation is taking place when an animal eats food so it can keep warm?

Accepted Answer

Chemical to thermal

Answer

Mechanical to thermal

Answer

Mechanical to radiant

Answer

Radiant to chemical

Question 14

Why is it necessary to have sunlight-> in the equation shown below?

Accepted Answer

This process cannot occur without energy from the sun.

Answer

The arrow represents the specific direction of sunlight.

Answer

Sunlight uses carbon dioxide and water to make sugar.

Answer

It is not necessary.

Question 15

In which part of this diagram is radiant energy from the sun being converted into chemical energy?

Accepted Answer

tree

Answer

bird

Answer

bicycle

Answer

dog

Question 16

In the food chain below, which organism is responsible for transforming radiant energy into chemical energy?

Accepted Answer

Grass

Answer

Prairie Dog

Answer

Coyote

Answer

Soil Bacteria

Question 17

Reptiles do not have the ability to create their own heat, and instead, sit in the sun for long periods of time in the mornings to warm up. Mammals and birds, on the other hand, have the ability to create their own heat. Where do mammals and birds get the energy for this heat?

Accepted Answer

from food the animals eat

Answer

from oxygen they breath in

Answer

from sunlight the animals absorb

Answer

from body fat that keeps all heat trapped in the body

Question 18

Warm-blooded animals have the ability to shiver when they get into extreme heat deficiency. The muscles begin to move very quickly, causing the body to change its stored energy into other molecules.  During this process, heat is given off. What is the energy transfer that is occurring when an animal shivers?

Accepted Answer

chemical energy to thermal energy

Answer

thermal energy to chemical energy

Answer

mechanical energy to thermal energy

Answer

thermal energy to mechanical energy

Question 19

Which organism in the food chain is responsible for transforming radiant energy into chemical energy?

Grass ------>Prairie dog------->Coyote------>Soil bacteria

Accepted Answer

grass

Answer

prairie

Answer

coyote

Answer

soil bacteria

Unit 6 Flow of Energy in Ecosystems

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