Biology ยท Environmental Studies

Ecosystem Nutrition and Energy Flow

1,093 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

Which of the following is an example of a species that has a high carrying capacity?

  1. Humans

  2. Rats

  3. Bacteria

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Humans, rats, and bacteria all have high carrying capacities because they are able to adapt to a wide range of environmental conditions and are able to reproduce quickly.

Multiple choice

Which type of fossil provides information about an organism's diet and feeding habits?

  1. Trace fossils

  2. Body fossils

  3. Chemical fossils

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

Coprolites, or fossilized feces, provide valuable insights into an organism's diet and feeding habits.

Multiple choice

Which of the following is a primary producer in a forest ecosystem?

  1. Trees

  2. Shrubs

  3. Fungi

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

Trees, along with other plants, are primary producers in forest ecosystems, utilizing sunlight, water, and carbon dioxide to produce organic matter through photosynthesis.

Multiple choice

Which of the following is an example of a limiting factor for population growth?

  1. Food

  2. Water

  3. Space

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

All of the above are examples of limiting factors for population growth. Limiting factors are factors that prevent a population from growing beyond a certain size.

Multiple choice

Which of the following is NOT a type of nutrient cycle?

  1. Carbon cycle

  2. Nitrogen cycle

  3. Water cycle

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

The water cycle is the process by which water moves through the Earth and atmosphere. While water is essential for life and many ecological processes, it is not considered a nutrient cycle in the same way that the carbon, nitrogen, and phosphorus cycles are.

Multiple choice

Which of the following is an example of a resource that can be limiting for an organism?

  1. Food

  2. Water

  3. Space

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the options listed can be limiting resources for an organism, depending on the specific environment and the organism's needs.

Multiple choice

What is the role of slime molds in the Indian ecosystem?

  1. They decompose organic matter and recycle nutrients.

  2. They are a food source for other organisms.

  3. They help to control populations of bacteria and fungi.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Slime molds play an important role in the Indian ecosystem by decomposing organic matter, recycling nutrients, serving as a food source for other organisms, and helping to control populations of bacteria and fungi.

Multiple choice

Which of the following groups of organisms is NOT directly involved in the cycling of oxygen through the biosphere?

  1. Plants

  2. Animals

  3. Decomposers

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

Producers, such as plants, are responsible for producing oxygen through photosynthesis, not cycling it.

Multiple choice

What is the primary diet of beavers, known for their dam-building behavior?

  1. Fish

  2. Insects

  3. Fruits

  4. Bark and Wood
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Beavers primarily feed on bark and wood from trees and shrubs, which they use to construct their dams and lodges.

Multiple choice

What are the factors that affect secondary production in an ecosystem?

  1. Primary production

  2. Predation

  3. Competition

  4. Disease

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All of the above factors affect secondary production in an ecosystem.

Multiple choice

What is the term used to describe the transfer of energy from one trophic level to the next?

  1. Energy flow

  2. Food chain

  3. Food web

  4. Trophic cascade

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All of the above terms are used to describe the transfer of energy from one trophic level to the next.

Multiple choice

What is a trophic level?

  1. A group of organisms that occupy the same position in a food chain or food web.

  2. A group of organisms that have the same diet.

  3. A group of organisms that live in the same habitat.

  4. A group of organisms that have the same predators.

  5. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A trophic level is a group of organisms that occupy the same position in a food chain or food web.

Multiple choice

In a predator-prey relationship, which organism is the consumer?

  1. Predator

  2. Prey

  3. Both Predator and Prey

  4. Neither Predator nor Prey
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a predator-prey relationship, the predator is the organism that hunts, kills, and consumes the prey organism for food.

Multiple choice

Which of the following is an example of a trophic cascade?

  1. A lion hunting a gazelle

  2. A bee pollinating a flower

  3. A tapeworm living in a human intestine

  4. A mistletoe plant growing on a tree
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A trophic cascade is a series of indirect interactions between species at different trophic levels. In the case of a lion hunting a gazelle, the lion preys on the gazelle, which reduces the gazelle population. This, in turn, allows the vegetation that the gazelles feed on to grow more abundantly, which benefits other herbivores in the ecosystem.

Multiple choice

What is the role of producers in energy flow?

  1. They produce food from inorganic molecules.

  2. They consume food from other organisms.

  3. They break down organic matter into simpler substances.

  4. They release nutrients back into the environment.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Producers play a vital role in energy flow by producing food from inorganic molecules.