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

What is the role of freshwater fish in the food chain?

  1. Prey for Larger Predators

  2. Top Predators

  3. Primary Producers

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

Freshwater fish primarily serve as prey for larger predators, such as birds, mammals, and other fish, in the aquatic food chain.

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

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

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 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 term for the practice of managing livestock on pasture in a way that mimics the grazing patterns of wild herbivores?

  1. Holistic grazing

  2. Rotational grazing

  3. Continuous grazing

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

Holistic grazing is a management approach that aims to mimic the natural grazing behavior of wild herbivores. This involves moving livestock frequently to different parts of the pasture, allowing the vegetation to recover and maintain its diversity.

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.

Multiple choice

What is the term used to describe the trend of using insects as a source of protein in food?

  1. Entomophagy

  2. Insect cuisine

  3. Bug eating

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

Entomophagy is a term used to describe the trend of using insects as a source of protein in food.

Multiple choice

Which of the following is a common type of feeding system used in animal production?

  1. Pasture-Based

  2. Confinement

  3. Semi-Confinement

  4. Free-Range
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Pasture-based, confinement, semi-confinement, and free-range are all common types of feeding systems used in animal production, each with its own advantages and disadvantages.

Multiple choice

What is the term used to describe the process of providing animals with access to a variety of feedstuffs to allow them to select their own diet?

  1. Cafeteria Feeding

  2. Selective Feeding

  3. Choice Feeding

  4. Palatability Assessment
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Choice feeding involves providing animals with access to a variety of feedstuffs, allowing them to select their own diet based on their preferences and nutritional needs.

Multiple choice

Which of the following is NOT a sustainable livestock feed source?

  1. Grass and forage crops

  2. Crop residues and by-products

  3. Animal by-products

  4. Genetically modified crops
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Genetically modified crops are not considered sustainable feed sources due to potential environmental and health concerns.