Foods and Their Classification Assignment

 

1
Which of the following is a difference between a food chain and a food web?
A) Food chains involve only plants, while food webs involve animals.
B) Food chains involve only plants, while food webs involve both plants and animals.
C) Food chains involve plants and animals, but food webs involve only animals.
D) Food chains are linear and food webs are complex.
E) Food chains include decomposers, but food webs do not.
2
The carnivores are classified as secondary consumers because they eat
A) more than one species of herbivore.
B) herbivores or other carnivores.
C) herbivores.
D) so often.
E) both a and d
3
The vast majority of energy taken into an ecosystem is
A) converted into biomass by plants.
B) utilized by secondary consumers.
C) lost as heat.
D) used by the primary consumers.
E) concentrated in the decomposers.
4
Although the biomass of a rain forest is much greater than the biomass of a cornfield
A) the number of primary consumers in the cornfield exceeds those in the rain forest.
B) the rain forest’s net primary productivity is much lower in relation to its biomass.
C) the cornfield is a more stable ecosystem.
D) the cornfield cannot survive without nutritional supplementation.
E) none of the above is true.
5
Carbon captured from the atmosphere by photosynthesis can only return through respiration.
A) true
B) false
6
Plants represent the most plentiful source of carbon in the ecosystem.
A) true
B) false
7
Plant growth is most likely to be limited by scarcity of __________ in the environment.
A) sulfur
B) nitrogen
C) phosphorus
D) carbon
E) both b and c
8
The sun drives circulation of the atmosphere.
A) true
B) false
9
The major atmospheric circulation patterns result from the interactions between six large air masses.
A) true
B) false
10
A rain shadow is likely to develop
A) in almost any very hot climate.
B) at elevations exceeding 4,500 ft.
C) on the leeward side of a mountain.
D) on the north slope of a mountain.
E) near the equator.
11
Scarce nutrients
A) eutrophic lakes
B) oligotrophic lakes
12
Abundant organic matter
A) eutrophic lakes
B) oligotrophic lakes
13
Little oxygen in summer
A) eutrophic lakes
B) oligotrophic lakes
14
Deep waters rich in oxygen
A) eutrophic lakes
B) oligotrophic lakes
15
Ecology is the study of
A) how organisms interact with their environment.
B) where we live.
C) how organisms interact with each other.
D) the different environments in the world.
E) all of the above
16
A variety of different bacteria and yeasts live on human skin. Together they are considered to be a(n)
A) ecosystem.
B) population.
C) community.
D) trophic level.
E) biome.
17
Photosynthetic bacteria are in trophic level
A) 1.
B) 2.
C) 3.
D) all of the above
E) none of the above
18
Molds that break down leaves and other dead organic material on the forest floor are in trophic level
A) 1.
B) 2.
C) 3.
D) all of the above
E) none of the above
19
A lion that feeds on zebras is in trophic level
A) 1.
B) 2.
C) 3.
D) all of the above
E) none of the above
20
The primary consumers of ecosystems are
A) herbivores.
B) carnivores.
C) omnivores.
D) the insects.
E) both a and d
21
Primary productivity refers to the
A) rate of photosynthesis in plants and photosynthetic bacteria as compared to the rate of plant consumption by herbivores.
B) total amount of light energy converted to organic compounds in a given area per unit time.
C) rate of decomposition by the detritivores.
D) total biomass of the photosynthetic organisms in the ecosystem.
E) none of the above
22
In the earth’s ecosystems, energy
A) is recycled and is never really lost.
B) flows from producers to consumers and back to producers.
C) flows in one direction, from producers to consumers.
D) is produced at all trophic levels.
E) both a and d
23
A consequence of cutting down forests is
A) that water is no longer returned to the atmosphere over the area of the forest.
B) the loss of animal habitats.
C) the production of high-quality agricultural land.
D) all of the above
E) both a and b
24
Burning wood
A) releases oxygen into the atmosphere.
B) consumes carbon dioxide.
C) destroys the carbon that was in the wood.
D) releases carbon into the atmosphere.
E) releases nitrogen into the atmosphere.
25
Nitrogen fixation is accomplished by
A) bacteria in the atmosphere.
B) bacteria in the soil and in plant root nodules.
C) plants.
D) the fungi.
E) all of the above
26
Why did their corn grow better when Native Americans added a fish to the soil at planting time?
A) The fish added carbon to the soil.
B) The fish added “fixed” nitrogen to the soil.
C) The fish added phosphorus and sulfur to the soil.
D) The fish provided the vitamins that the young plant required.
E) all of the above
27
Pollution of lakes by commercial detergents that contain phosphates
A) kills the bacteria there and causes a breakdown in the food chain.
B) encourages the growth of bacteria and an increase in the fish population.
C) encourages the growth of algae, which leads to the suffocation of fish and other animals.
D) raises the pH.
E) lowers the pH.
28
Ocean currents are determined by
A) proximity to land.
B) underwater geography.
C) atmospheric circulation.
D) the season.
E) none of the above
29
Deep sea waters below 300 meters
A) harbor a rich variety of life, including the red algae.
B) are rich in photoplankton.
C) consist mostly of plant life.
D) harbor limited kinds of life, some of which are very strange.
E) both b and c
30
Oligotrophic lakes are
A) only found at high latitudes.
B) saltwater lakes.
C) rich in organic matter and nutrients.
D) scarce in organic matter and nutrients.
E) rich in plant life.
Tumwine Edward

I am a God fearing Ugandan involved in the Digital Communications, Training and Platform development.

Leave a Comment
Leave a Comment
Share
Published by
Tumwine Edward
9 years ago

Recent Posts

END OF YEAR S.3 CHEMISTRY EXAM 2023

5 months ago

S.1 CHEMISTRY EXAM 2023

5 months ago

CHEMISTRY EXAM SENIOR TWO 2023

5 months ago

QUESTION 4

4(a) what are your roles as citizen of Uganda?   (b) Each and every  individual in…

5 months ago

QUESTION 3

3(a) why do we political Eduction in the New Uganda curriculum?    (b) Explain the roles…

5 months ago

QUESTION 2

2(a) Describe the creation story in relation to the origin of man.    (b) Explain why…

5 months ago