Biology ยท 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 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

Which supporting service is essential for the reproduction of many plant species?

  1. Pollination

  2. Soil formation

  3. Water cycling

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

Pollination is a critical supporting service that enables the reproduction of many plant species, ensuring the continuation of plant life and biodiversity.

Multiple choice

How does nutrient cycling contribute to intergenerational equity?

  1. It ensures the availability of essential nutrients for plant growth.

  2. It regulates the Earth's climate.

  3. It supports biodiversity and ecosystem resilience.

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

Nutrient cycling is a fundamental supporting service that provides numerous benefits for current and future generations.

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

What is the primary source of energy for most ecosystems?

  1. Sunlight

  2. Wind

  3. Water

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

Sunlight is the primary source of energy for most ecosystems because it is the energy that plants use to photosynthesize.

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.

Multiple choice

What is the role of consumers 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
B Correct answer
Explanation

Consumers play a vital role in energy flow by consuming food from other organisms.

Multiple choice

What is the role of decomposers 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
C Correct answer
Explanation

Decomposers play a vital role in energy flow by breaking down organic matter into simpler substances.

Multiple choice

What is the first trophic level in an ecosystem?

  1. Producers

  2. Consumers

  3. Decomposers

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

Producers are the first trophic level in an ecosystem because they produce food from inorganic molecules.

Multiple choice

What is the highest trophic level in an ecosystem?

  1. Producers

  2. Consumers

  3. Decomposers

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

Top predators are the highest trophic level in an ecosystem because they do not have any predators.

Multiple choice

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

  1. Energy flow

  2. Nutrient cycling

  3. Decomposition

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

Energy flow is the term for the transfer of energy from one trophic level to the next.

Multiple choice

What is the term for the transfer of nutrients from one trophic level to the next?

  1. Energy flow

  2. Nutrient cycling

  3. Decomposition

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

Nutrient cycling is the term for the transfer of nutrients from one trophic level to the next.

Multiple choice

How can ancient mass migrations impact the evolution of organisms?

  1. By introducing new genetic material into populations

  2. By creating new opportunities for adaptation

  3. By increasing competition for resources

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

Ancient mass migrations can impact the evolution of organisms by introducing new genetic material into populations, creating new opportunities for adaptation, and increasing competition for resources.