Biology · 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

Protists are useful in various manners. Which among the following is not a use of protists?

  1. Primary producer of aquatic ecosystem

  2. Commercial production

  3. Medicine production

  4. Biological pest control
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bacteria can also be used in the place of pesticides in the biological pest control. This commonly uses Bacillus thuringiensis (also called BT), a Gram-positive, soil dwelling bacterium. This bacteria is used as a Lepidopteran-specific insecticide under trade names such as Dipel and Thuricide.

Multiple choice

Protists are useful in the various manners. Which among the following is not a use of protists?

  1. Primary producer of aquatic ecosystem

  2. Source of commercial products

  3. Source of medicines

  4. Source of mineral

  5. Source of biological pest control
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Bacteria can also be used in the place of pesticides in the biological pest control. This commonly uses Bacillus thuringiensis (also called BT), a Gram-positive, soil dwelling bacterium. This bacteria is used as a Lepidopteran-specific insecticide under trade names such as Dipel and Thuricide.

Multiple choice

A food chain will not begin in the absence of

  1. consumer

  2. producer

  3. decomposer

  4. producer and consumer

  5. either producer or decomposer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A producer in terms of biology refers to the first trophic level in a simple food chain. A food chain will not begin in the absence of producer.

Multiple choice

An example of a sedimentary cycle is

  1. carbon cycle

  2. nitrogen cycle

  3. oxygen cycle

  4. phosphorous cycle

  5. none of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An example of a sedimentary cycle is phosphorous cycle.

Multiple choice

A cow is dependent on plants for its food. This shows

  1. saprophytic nutrition

  2. heterotrophic nutrition

  3. parasitic nutrition

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

Option 2 is correct. Those organisms which are dependent upon other organisms for food are known as heterotrophs.

Multiple choice

In ecosystem, plants parasites are classified as

  1. herbivores

  2. carnivores

  3. omnivores

  4. scavengers

  5. insectivores
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An herbivore is an animal that gets its energy from eating plants, and only plants. Plant parasites are classified as herbivores because these feed on plants.

Multiple choice

Predators are often called as

  1. producers

  2. scavengers

  3. live feeders

  4. detritivorous

  5. filter feeders
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Predators are also called as live feeders as they feed directly upon their prey.

Multiple choice

Hippopotamus is a/an

  1. carnivore

  2. herbivore

  3. omnivore

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hippopotamuses are herbivores that feed primarily on grasses and other vegetation. Despite their large size and aggressive nature, they consume only plant material.

Multiple choice

Omnivorous animals are

  1. plant eaters

  2. meat eaters

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Omnivorous animals consume both plant and animal matter. They have adaptations that allow them to digest and derive nutrition from both sources, like humans, bears, and pigs.