Food Chain | MCQs

Explanation

Primary consumers are animals that eat producers (plants) and are the first level of consumers in a food chain. They are also known as herbivores. Examples of primary consumers include:

• Insects (bees, butterflies, ants)
• Small mammals (cows, goats, rabbits, mice, squirrels)
• Birds (finches, sparrows, robins)
• Fish (some species of fish that eat algae or aquatic plants)

Explanation

Carnivore : Meat :: Herbivore : Plants

Carnivore means گوشت خور

Herbivore means سبزی خور

Explanation

• A food web is a network of multiple food chains that overlap and connect.
• It showing the complex feeding relationships between different species in an ecosystem.
• It's a web-like structure that illustrates the various pathways that energy and nutrients flow through the ecosystem.

Explanation

The food chain is the sequence of energy transfer from:

• Producers (plants, algae, phytoplankton) →
• Consumers (herbivores, carnivores, omnivores) →
• Decomposers (fungi, bacteria, insects)

This energy transfer is also known as the energy flow or trophic cascade.

Explanation

• A predator is an organism that feeds directly on another living organism, called the prey.
• Example: A lion hunting a deer

Explanation

• If the number of frogs increases, it is likely that the number of snakes would decrease.
• This is because snakes are predators that feed on frogs, and an increase in frog population would lead to a decrease in snake population due to competition for resources and potential overgrazing.

Explanation

The correct order of the levels in a food chain is:

• Producer (plants and algae that produce their own food through photosynthesis)
• Consumer (animals that eat producers or other consumers)
• Decomposer (organisms like bacteria and fungi that break down dead plants and animals)

Explanation

• Omnivores can be both secondary and tertiary consumers, depending on their diet and position in the food chain.
• They can eat primary consumers (herbivores) as secondary consumers, and also eat secondary consumers (other carnivores or omnivores) as tertiary consumers.

Explanation

• Omnivores are consumers that eat both producers (plants and algae) and consumers (other animals).
• They have a varied diet that includes both plant and animal matter.
• Examples of omnivores include humans, bears, pigs, and chimpanzees.

Explanation

Wolf is a tertiary consumer because it eats both primary consumers (mice) and secondary consumers (cats).