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

Which of the following is an example of an invasive species?

  1. Kudzu

  2. Zebra mussel

  3. Lionfish

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

Kudzu, zebra mussel, and lionfish are all examples of invasive species.

Multiple choice

Which of the following is an example of how biodiversity has inspired scientific research?

  1. The discovery of antibiotics

  2. The development of vaccines

  3. The study of climate change

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

Biodiversity has inspired many areas of scientific research, including the discovery of antibiotics, the development of vaccines, and the study of climate change.

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 key process involved in nutrient cycling?

  1. Nitrogen fixation

  2. Nitrification

  3. Denitrification

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

Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen. While photosynthesis is essential for plant growth and the production of organic matter, it is not directly involved in nutrient cycling.

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

What is the primary focus of landscape genetics?

  1. Investigating the influence of landscape features on gene flow and genetic diversity

  2. Studying the impact of climate change on species distribution

  3. Analyzing the role of natural selection in shaping genetic variation

  4. Examining the effects of habitat fragmentation on population connectivity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Landscape genetics seeks to understand how landscape elements, such as habitat patches, corridors, and barriers, affect the movement of genes and the genetic structure of populations.

Multiple choice

What is the role of genetic diversity in maintaining ecosystem resilience?

  1. It enhances the ability of ecosystems to adapt to environmental changes

  2. It reduces the susceptibility of ecosystems to disturbances

  3. It promotes ecosystem productivity and stability

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

Genetic diversity is crucial for maintaining ecosystem resilience as it enhances the ability of ecosystems to adapt to environmental changes, reduces their susceptibility to disturbances, and promotes ecosystem productivity and stability. Higher genetic diversity provides a broader range of genetic traits and adaptations, allowing ecosystems to respond and recover from environmental challenges.

Multiple choice

Which of the following is an example of a supporting service that helps regulate the water cycle?

  1. Water cycling

  2. Nutrient cycling

  3. Pollination

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

Water cycling is a supporting service that helps regulate the water cycle by moving water through the atmosphere, land, and oceans.

Multiple choice

Which of the following is an example of a supporting service that helps regulate the nitrogen cycle?

  1. Nitrogen fixation

  2. Denitrification

  3. Nitrification

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

Nitrogen fixation, denitrification, and nitrification are all supporting services that help regulate the nitrogen cycle by converting nitrogen from one form to another.

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

Which of the following is an example of an organism that exhibits environmental engineering?

  1. Beaver

  2. Coral

  3. Spider

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

All of the options listed are examples of organisms that exhibit environmental engineering. Beavers build dams, corals create reefs, and spiders construct webs, all of which modify their environment to better suit their 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.