WorksheetsEnergy Flow & Cycles
Total questions: 21
Worksheet time: 28mins
Name
Class
Date
1.
Which of these is the most abundant gas in the air that we breathe?
a)
Nitrogen
b)
Oxygen
c)
Hydrogen
d)
Carbon Dioxide
2.
What is another name for producer?
a)
consumer
b)
herbivore
c)
autotroph
d)
lichen
3.
What does every food chain start with?
a)
producers
b)
sun
c)
consumer
d)
decomposers
4.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
5.
Use the diagram to answer the question.
The Mayfly is a food source for which 3 organisms?
The Mayfly is a food source for which 3 organisms?
a)
Frog, Dragon Fly and snake
b)
Frog, trout and dragon fly
c)
Frog, salamander and trout
d)
Frog and phytoplankton
6.
Animals that eat both plants and animals
a)
Carnivore
b)
Rabbit
c)
Herbivore
d)
Omnivore
7.
In this food web, which two organisms could be harmed if the mouse population were to decrease?
a)
Deer and caterpillar
b)
Wolf and snake
c)
Oak and grass
d)
Hawk and songbird
8.
Based on the food web, which shows correctly the one way that energy flows?
a)
Plant -->Rat -->Owl
b)
Plant <--Rat <-- Owl
9.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
10.
Which of these is an example of precipitation?
a)
snow
b)
air
c)
clouds
d)
vapor
11.
Which is the opposite of condensation?
a)
runoff
b)
evaporation
c)
precipitation
d)
transpiration
12.
What is the next stage after EVAPORATION in the water cycle?
a)
CONDENSTATION
b)
GROUNDWATER
13.
What gas is released by plants during photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
14.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
carbon dioxide + water --> oxygen + glucose
b)
carbon dioxide + glucose + water --> oxygen
c)
oxygen + water --> carbon dioxide + glucose
d)
glucose+ oxygen ---> water + carbon dioxide
15.
What is another name for glucose?
a)
Chlorophyll
b)
Chloroplasts
c)
Stomata
d)
Sugar
16.
What pigment absorbs sunlight for photosynthesis?
a)
chloroplast
b)
thylakoid
c)
grana
d)
chlorophyll
17.
In which organelle (part of the cell) does photosynthesis take place?
a)
mitochondria
b)
chloroplast
c)
nucleus
d)
cell membrane
18.
What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?
a)
nitrogen composition
b)
ammonia
c)
nitrogen fixation
d)
denitrification
19.
Organisms require nitrogen to make which of the following?
a)
glucose
b)
lipids
c)
proteins
d)
carbohydrates
20.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
21.
If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
100 %
