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

What type of animals only eat plants?

  1. Omnivores

  2. Herbivores

  3. Carnivores
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Herbivores are animals that are anatomically and physiologically adapted to eat plant-based foods. Carnivores eat meat, and omnivores eat both.

Multiple choice

A common adaptaion of animals living in the chaparral is

  1. Camouflage

  2. Water Storage

  3. Thin Skin

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

Chaparral biomes are characterized by dry, shrubby vegetation and frequent fires. Animals in this biome commonly use camouflage as an adaptation to blend in with the dry, brownish vegetation, helping them avoid predators and ambush prey more effectively in the open landscape.

Multiple choice commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

An animal surviving only in a particular area is

  1. Eurybaric

  2. Endemic

  3. Pandemic

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

Endemic means a species which is native to a place and is not found anywhere else in the world. Endemic basically means indigenous. The more endemic species at a place more is the biodiversity of that place. Another example includes the Nilgiri tahr, also known as Nilgiri Ibex is endemic to the Nilgiri Hills and some part of Western Ghats of Kerala.

So, the correct answer is 'Endemic'.

Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Which of the following belongs to the category of primary consumers?

  1. Snakes

  2. Water insects

  3. Eagle

  4. Cattle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The consumers in an ecosystem are heterotrophs, mostly animals which feed on other organisms. Consumers are also called as phagotrophs, as they ingest food. Consumers can be first order consumers, e.g., herbivores, cattle, rabbit, deer, insects like grasshopper etc. They feed on producers. Primary carnivores are second order consumers. They feed on herbivores. Secondary carnivores are third order consumers which feed on primary carnivores. For example, Small fish and water insects like scavenger beetles that feed on the crustaceans. 

Thus, the correct answer is option D.

Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Trophic levels are formed by

  1. Organisms linked in food chain

  2. Only plants

  3. Only animals

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

Food chain is the sequence of organisms through which food and energy is passed in an ecosystem with the members of trophic level. Trophic level is the hierarchical levels in an ecosystem which consists organism

Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

If bamboo plant is growing in a far forest then what will be its trophic level?

  1. First

  2. Second

  3. Third

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

Trophic levels are steps or divisions of food chain characterised by the specific method of obtaining food. Producers belong to first trophic level, herbivores to second trophic level and carnivores to third trophic level. Bamboo plant, which is a producer will belong to first trophic level. It will capture solar energy for other organisms living in the forest. Thus, the correct answer is option A.

Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

The zooplanktonic forms are

  1. Primary consumers

  2. Secondary consumers

  3. Carnivores

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

In a pond or lake ecosystem, zooplanktons (ciliates, flagellates, rotifers, small crustaceans, like Cyclops and Daphnia larvae) are directly dependent on phytoplanktons. Thus, the correct answer is option A.

Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

A rat feeding upon potato tuber is

  1. Producer

  2. Carnivore

  3. Decomposer

  4. Primary consumer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rat is a herbivore animal, who used to eat plant products. The potato plant is a producer who trap solar energy and produces food (carbohydrates), which are stored in potato tubers. The rat cannot produces their own food by the use of solar energy and hence, feeds on potato tuber for his life processes.

Thus, the correct answer is option D.

Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Trophic levels in a food chain are formed by

  1. Producers

  2. Consumers

  3. Decomposers

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A food chain is series of plants/animals which are interrelated in the form of organism being eaten as food by the other. Trophic levels in a food chain are formed by producers, consumers and decomposers. In the given food chain, plants are producers. The animals eating plants are called as primary consumers and animals eating primary consumers are called as secondary consumers. Decomposers are those which decomposes the waster organic matter and release energy back in the environment.
Thus, the correct answer is 'All of the above.'
Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Food web is constituted by

  1. Various interlinked food chains in a community

  2. Relationship between animals and plants

  3. Relationship between organisms and their environment

  4. Relationship between animals, plants and microbes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A food chain is series of plants/animals which are interrelated in the form of organism being eaten as food by the other. Food web is constituted by various interlinked and interdependent food chains in a community. It is also called as consumer-resource system. Ecosystem consists of living organisms and their abiotic environment. 
Thus, the correct answer is 'Various interlinked food chains in a community.'
Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

A food chain can have trophic levels

  1. Three or four

  2. Three

  3. Two

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

Food chain in an ecosystem is defined as the passage of food from one trophic level to the next higher trophic level. The transfer of food from one trophic level to the next level results in the passage of energy through these trophic levels. A food chain can have 3 or 4 trophic levels. Plants are producers which are present in first trophic level. Primary consumers are second trophic levels which eat plants. They are herbivores. Secondary consumer are present make third trophic level. They eat primary consumers and are carnivores. Tertiary or top consumer make fourth trophic level. They are carnivores

Thus, the correct answer is 'Three or four.'

Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Food levels of an ecosystem are known as

  1. Producer levels

  2. Herbivore levels

  3. Consumer levels

  4. Trophic levels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A food chain is series of plants/animals which are interrelated in the form of organism being eaten as food by the other. A food chain consists of producers abd consumers. In the given food chain, plants are producers. They are present in the first trophic level. It is also called as T$ _1$ trophic level. The animals eating plants are called as primary consumers. They are herbivores and occupy the second trophic level in an ecosystem. It is also called as T$ _2$ trophic level. Animals eating primary consumers are called as secondary consumers. They occupy the third trophic level in an ecosystem. It is also called as T$ _3$ trophic level. 

Thus, the correct answer is 'Trophic levels.'