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 herbivorous interaction?

  1. A deer eating grass

  2. A lion eating a zebra

  3. A remora fish attaching itself to a shark

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

In a herbivorous interaction, an animal eats plants. In this case, the deer eats grass.

Multiple choice

What is the primary diet of a panda bear?

  1. Bamboo

  2. Fish

  3. Meat

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

Panda bears are primarily herbivores, with bamboo constituting the majority of their diet.

Multiple choice

Which of the following is a primary producer in coastal and marine ecosystems?

  1. Phytoplankton

  2. Zooplankton

  3. Fish

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

Phytoplankton are microscopic algae that are the primary producers in coastal and marine ecosystems. They use sunlight to convert carbon dioxide and water into glucose and oxygen through photosynthesis.

Multiple choice

What is the term for the interconnected network of activities involved in producing, processing, distributing, and consuming food?

  1. Food chain

  2. Food web

  3. Food system

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

A food system encompasses the entire range of activities related to food, from production and processing to distribution and consumption, highlighting the interconnectedness of these processes.

Multiple choice

In a food web, which trophic level typically contains the highest biomass?

  1. Producers

  2. Primary Consumers

  3. Secondary Consumers

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

Producers, such as plants, have the highest biomass in a food web because they are the foundation of the food chain and convert sunlight into energy.

Multiple choice

In a food chain, which trophic level typically contains the lowest biomass?

  1. Producers

  2. Primary Consumers

  3. Secondary Consumers

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

Tertiary consumers, such as top predators, have the lowest biomass in a food chain because they are at the end of the food chain and receive energy from multiple trophic levels below them.

Multiple choice

In a food web, which trophic level typically contains the greatest diversity of species?

  1. Producers

  2. Primary Consumers

  3. Secondary Consumers

  4. Tertiary Consumers
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Secondary consumers, such as herbivores and omnivores, typically have the greatest diversity of species in a food web because they occupy a wide range of niches and feed on a variety of primary producers and primary consumers.

Multiple choice

What is the primary source of food for desert-dwelling humans?

  1. Plants

  2. Animals

  3. Insects

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

Desert-dwelling humans obtain food from plants, animals, and insects.

Multiple choice

Which type of meat production system is generally considered to have the lowest environmental impact?

  1. Conventional Meat Production

  2. Grass-Fed Meat Production

  3. Organic Meat Production

  4. Cellular Meat Production
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Grass-fed meat production systems have a lower environmental impact compared to conventional systems, as they require less feed inputs, produce less methane, and contribute to the maintenance of grasslands and biodiversity.

Multiple choice

What is the term for the transfer of energy from one organism to another through a food chain?

  1. Food chain

  2. Food web

  3. Trophic level

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

A food chain is the transfer of energy from one organism to another through a series of organisms, with each organism eating the one below it.

Multiple choice

What is the term for the interconnected network of food chains in an ecosystem?

  1. Food chain

  2. Food web

  3. Trophic level

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

A food web is the interconnected network of food chains in an ecosystem, showing the feeding relationships between different organisms.

Multiple choice

What is the term for the level of an organism in a food chain or food web?

  1. Food chain

  2. Food web

  3. Trophic level

  4. Ecological pyramid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A trophic level is the level of an organism in a food chain or food web, based on its position in the transfer of energy.

Multiple choice

What is the term for the graphical representation of the trophic levels in an ecosystem?

  1. Food chain

  2. Food web

  3. Trophic level

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

An ecological pyramid is a graphical representation of the trophic levels in an ecosystem, showing the amount of energy at each level.

Multiple choice

What is the primary source of nutrients for coral reefs?

  1. Sunlight

  2. Plankton

  3. Fish Excrement

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

Plankton, consisting of microscopic organisms, serves as the primary source of nutrients for coral reefs, providing essential food for various marine life.

Multiple choice

What is the primary source of food for most coral reef organisms?

  1. Plankton

  2. Algae

  3. Fish

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

Plankton, tiny organisms suspended in the water column, serve as the primary food source for many coral reef organisms, including fish, invertebrates, and coral polyps themselves.