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

Why are plants classified as autotrophs?

  1. Because they eat decaying material

  2. Because they cannot make their own food

  3. Because they can make their own food

  4. Because they can release carbon dioxide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Autotrophs are organisms that can produce their own organic compounds from inorganic sources, typically using sunlight.

Multiple choice

The birds feeds on ______ and act as decomposers.

  1. Wild Animals

  2. Carnivorous Animals

  3. Small Insects

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

Many birds act as natural pest controllers by feeding on small insects. This helps maintain the balance of the ecosystem.

Multiple choice

What do Ruminants mostly eat?

  1. Dead animals

  2. Grass

  3. Coca-Cola

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

Ruminants are herbivores that have evolved to consume and digest fibrous plant material, such as grass, through a specialized multi-chambered stomach system.

Multiple choice

Are all herbivores ruminants?

  1. Yes

  2. No
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Not all herbivores are ruminants. For example, horses and rabbits are hindgut fermenters, meaning they digest plant material differently than ruminants.

Multiple choice

heterotrophs are consumers

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Heterotrophs are organisms that cannot produce their own food and must consume other organisms (plants, animals, or organic matter) to obtain energy.

Multiple choice

Heterotrophs...

  1. Are photosynthetic

  2. Can make their own food

  3. Eat other organisms

  4. Are always microscopic
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Heterotrophs are defined by their need to ingest organic carbon by eating other organisms, as they cannot synthesize their own food from inorganic sources.

Multiple choice

How do autotrophs obtain energy?

  1. Depend on air to provide needed energy

  2. Make their own energy from soil.

  3. Make their own energy from the sun.

  4. Depend on other organisms that they eat to obtain energy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Autotrophs, such as plants, use sunlight to convert inorganic substances like carbon dioxide and water into organic energy-rich compounds through photosynthesis.

Multiple choice

autotrophs are living things

  1. true

  2. false

  3. what's an autotroph?
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Autotrophs are organisms that produce their own food, such as plants. Since they are living organisms, the statement is true.

Multiple choice

What are autotrophs?

  1. Organisms that eat other organisms for food and energy

  2. Dinos who eat people

  3. People who love to eat

  4. Organisms who make their own food
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Autotrophs are organisms, such as plants and algae, that synthesize their own organic food using sunlight or chemical energy. Other options describe heterotrophs or are nonsensical.

Multiple choice

What are autotrophs?

  1. Producers

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

Autotrophs are known as producers because they produce their own food from inorganic sources. Consumers are heterotrophs that must eat other organisms.

Multiple choice

Can plants make their own food?

  1. Yes they can

  2. No they can't
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plants are autotrophs, meaning they use photosynthesis to convert sunlight, water, and carbon dioxide into glucose, which serves as their food.

Multiple choice

Young birds feed almost exclusively on _________.

  1. plant matter

  2. animal matter

  3. insects
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Young quail chicks require high protein for rapid growth. Consequently, their diet consists almost entirely of insects during the early stages of life.