Biology · Environmental Studies

Ecosystem Nutrition and Energy Flow

1,235 Questions

Ecosystem nutrition and energy flow questions cover trophic levels, food chains, and biodegradable materials. These concepts frequently appear in general science sections of major competitive exams. Review these questions to build a solid understanding of ecological interactions.

Trophic levels conceptFood chain orderAutotrophic nutritionEnergy assimilationScavengers and decomposers

Ecosystem Nutrition and Energy Flow Questions

Multiple choice

Herbivores eat _________.

  1. Plants. (They only eat producers)

  2. Meat. (They only eat other animals)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Herbivores are animals that feed exclusively on plants, algae, or other producers. Option B describes carnivores.

Multiple choice

Define: Food web

  1. The direct path of energy flow between two animals.

  2. The energy flow between all speicies in a community.

  3. All of the biotic factors in an environment.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A food web is a complex network of interconnected food chains showing the flow of energy through an entire ecosystem. It includes multiple species and their feeding relationships.

Multiple choice

Define: Food chain

  1. The direct path of energy flow from one animal to the next.

  2. The energy path between all of the organisms in an area.

  3. The scavengers in an area
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A food chain represents a single, linear path of energy transfer from one organism to another, starting from a producer. It is simpler than a food web.

Multiple choice

In an aquarium what would you see

  1. fish eating plants

  2. plants need air

  3. sun heats the water

  4. plants
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In an aquarium, you would observe living organisms like fish interacting with their environment, such as eating plants.

Multiple choice

All of the following are examples of limiting factors except...

  1. Food

  2. Shelter

  3. Weather

  4. Water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Limiting factors are biotic or abiotic resources that restrict population growth, such as food, water, and shelter. Weather is generally considered a density-independent factor rather than a limiting resource in this context.

Multiple choice

A pioneer species can be found in which level of succession?

  1. Primary

  2. Secondary

  3. Tertiary

  4. Climax Community
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pioneer species are the first organisms to colonize a previously barren environment, such as bare rock after a volcanic eruption or glacier retreat, which defines primary succession.

Multiple choice evs - i interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

An earthworm's niche is described by the statement that

  1. Earthworms are decomposers who live in the soil.

  2. Earthworms eat decaying organic matter.

  3. Earthworms are usually found living in the soil.

  4. Earthworms are used as food by some birds.

  5. Earthworms help the soil by aerating it.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Niche refers to the totality of an organism’s adaptations, its mode of use of available resources, and the lifestyle in its community. It includes the mode of consumption of materials in its environment as well as its interactions with other organisms. Habitat portion of earthworm's fundamental niche refers to the soil while its role as decomposer is the realized niche. Thus, the correct answer is A.

Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Read the following statements and select the correct ones. 
(i) All the color components of the visible spectrum are available for marine plants living in different depths of the ocean.
(ii) Many herbs and shrubs in rain forests adapt to photosynthesis optimally under very low light conditions as they grow under canopy trees. 
(iii) Gradual increasing in average global temperature will affect the distributional range of some species.
(iv) The quality of sol does not depend upon the weathering process. 

  1. (i) and (ii)

  2. (ii) and (iv)

  3. (ii) and (iii)

  4. (i) and (iv)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

(i) At depth, the first colour to get absorbed is red then red and then yellow. Even water at 5Ft depth gets a noticeable loss of red.

(ii)By growing in canopy trees the herbs and shrubs adapt to photosynthesis under very low light.
(iii)There is some distributional range of different species if there is a gradual increase in average global temperature then it will affect it.
(iv)The quality of sol does highly depend on the weathering process.
So, the correct option is (ii) and (iii).

Multiple choice zoology meaning of life level of biological organization in animals introduction to tissues basics of ecology

Which of the following types of organisms occupies more than one trophic level in a pond ecosystem?

  1. Phytoplankton

  2. Fish

  3. Zooplankton

  4. Frog
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In an aquatic ecosystem, fishes can consume phytoplanktons and other producers. In such a system, fishes will be primary carnivores or primary consumers or herbivores as compared to the grazing food chain. Some bigger fishes can consume smaller fishes. In this case, bigger fishes will act as secondary consumers or secondary carnivores feeding on primary carnivores. Thus, fishes can occupy more than one trophic levels. Phytoplanktons will always be producers and zooplanktons will always be primary consumers. The frog will always act as secondary consumer feeding on primary consumers i.e., insects. Thus, the correct answer is option B.