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

How can microplastics affect the food chain?

  1. Transfer of microplastics and associated contaminants up the food chain

  2. Reduced nutritional value of prey items

  3. Impaired predator-prey interactions

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

Microplastics can affect the food chain by transferring microplastics and associated contaminants up the food chain, reducing the nutritional value of prey items, and impairing predator-prey interactions.

Multiple choice

What is the term for the practice of avoiding or reducing the consumption of meat and animal products?

  1. Vegetarianism

  2. Veganism

  3. Pescetarianism

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

Veganism is the practice of avoiding or reducing the consumption of meat and animal products.

Multiple choice

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

  1. Phytoplankton

  2. Zooplankton

  3. Nekton

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

Phytoplankton are microscopic algae that use sunlight to produce food through photosynthesis, forming the base of the marine food web.

Multiple choice

What is the primary producer in a coral reef ecosystem?

  1. Coral

  2. Algae

  3. Fish

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

Algae are the primary producers in a coral reef ecosystem, using sunlight to produce food through photosynthesis.

Multiple choice

Which of the following is an example of a primary producer in an aquatic ecosystem?

  1. Fish

  2. Zooplankton

  3. Phytoplankton

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

Phytoplankton are microscopic algae that are responsible for a significant portion of primary production in aquatic ecosystems.

Multiple choice

Which ecosystem service is responsible for providing us with oxygen?

  1. Pollination

  2. Water purification

  3. Climate regulation

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

Oxygen production is an ecosystem service that provides us with the oxygen we need to breathe. This service is provided by plants, algae, and other organisms that produce oxygen through photosynthesis.

Multiple choice

What is the role of protists in the Indian ecosystem?

  1. They are primary producers.

  2. They are decomposers.

  3. They are parasites.

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

Protists play a variety of roles in the Indian ecosystem, including being primary producers, decomposers, and parasites.

Multiple choice

Which of the following is NOT a common adaptation strategy employed by plants in tropical environments?

  1. Developing thick, waxy leaves to reduce water loss

  2. Producing deep roots to access groundwater

  3. Storing water in specialized tissues

  4. Growing tall to reach sunlight
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While plants in tropical environments often develop adaptations to conserve water and access nutrients, growing tall to reach sunlight is not a common strategy.

Multiple choice

Which of the following is a common adaptation strategy employed by plants in tropical environments to cope with limited water availability?

  1. Developing thick, waxy leaves to reduce water loss

  2. Producing deep roots to access groundwater

  3. Storing water in specialized tissues

  4. Growing tall to reach sunlight
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Plants in tropical environments often develop a variety of adaptations to cope with limited water availability, including thick, waxy leaves, deep roots, water storage tissues, and reduced height.

Multiple choice

Which of the following is an example of a commensal relationship between microorganisms?

  1. Nitrogen-fixing bacteria and legumes

  2. Mycorrhizal fungi and plants

  3. Pathogenic bacteria and their hosts

  4. Bacteria living on the skin of humans
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bacteria living on the skin of humans are commensals, as they benefit from the environment provided by the skin without harming the human host.

Multiple choice

Which of the following is an example of a biogeochemical cycle in which microorganisms play a significant role?

  1. The water cycle

  2. The carbon cycle

  3. The nitrogen cycle

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

Microorganisms play a significant role in the nitrogen cycle, converting nitrogen gas into forms that can be used by plants.

Multiple choice

What is the importance of cave-dwelling organisms?

  1. They provide food for other animals

  2. They help to recycle nutrients

  3. They are a source of new medicines

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

Cave-dwelling organisms provide food for other animals, help to recycle nutrients, and are a source of new medicines.

Multiple choice

What is the term used to describe the loss of coral color and the expulsion of symbiotic algae from coral tissues?

  1. Coral Bleaching

  2. Coral Discoloration

  3. Coral Stress

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

Coral bleaching refers to the phenomenon where corals lose their vibrant colors and expel the symbiotic algae that provide them with nutrients and energy. This process is primarily caused by elevated sea temperatures and other environmental stressors.

Multiple choice

What is the primary source of food for the majority of the world's population?

  1. Agriculture

  2. Hunting and gathering

  3. Fishing

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

Agriculture is the primary source of food for the majority of the world's population, providing a wide variety of crops and livestock products.

Multiple choice

What is the role of echinoderms in the marine ecosystem?

  1. Prey for other marine animals

  2. Filter feeders

  3. Bioturbators

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

Echinoderms play various roles in the marine ecosystem, including serving as prey for other marine animals, filter feeders, and bioturbators that help mix and aerate the sediment.