Question

name:
q.5. fill in the blanks with suitable words.
a) the ______ means \is eaten by\ in a food chain.
b) a ______ is a sequence of who eats whom in an ecosystem.
c) ______ use the energy from the sun to produce their own food.
d) a food web shows how ______ is passed from one living thing to another.
q.6. what organisms break down the remains of dead organic matter?
a) heterotrophs b) consumers
c) decomposers d) producers
q.7. the diagram below shows a simple food chain.
which organism is a primary consumer in this food chain?
a) plant b) insect
c) mouse d) owl
q.8. which of the following shows the correct order for a food chain?
a) grass → rabbit → fox → wolf
b) wolf → fox → rabbit → grass
c) rabbit → grass → wolf → fox
d) fox → rabbit → grass → wolf
q.9. which of the following organism is carnivore?
a) grass b) human
c) sheep d) tiger
q.10. the diagram below shows a simple food chain.
which organism is a secondary consumer in this food chain?
a) algae b) fish
c) stork d) crocodile

Explanation:

• Q.6: Decomposers break down dead organic matter. Heterotrophs are organisms that cannot produce their own food. Consumers eat other organisms. Producers make their own food.
• Q.7: In a food chain, the primary consumer is the first organism that eats the producer. Here, the plant is the producer, and the insect eats the plant, so the insect is the primary consumer.
• Q.8: A food chain starts with a producer (grass). Then comes the primary consumer (rabbit that eats grass), then the secondary consumer (fox that eats rabbit), and then the tertiary consumer (wolf that eats fox).
• Q.9: A carnivore is an organism that eats other animals. Grass is a producer (plant), human is an omnivore (eats plants and animals), sheep is a herbivore (eats plants), and tiger is a carnivore (eats other animals).
• Q.10: In a food chain, the secondary consumer is the organism that eats the primary consumer. Algae is the producer, fish (eats algae) is the primary consumer, stork (eats fish) is the secondary consumer, and crocodile (eats stork) is the tertiary consumer.

Answer:

• Q.6: C. Decomposers
• Q.7: B. Insect
• Q.8: A. Grass → Rabbit → Fox → Wolf
• Q.9: D. Tiger
• Q.10: C. Stork