Look at the below figure and answer the following questions. 'Which' apple do you think fell from the tree first? Explain your answer.

If you consider the somewhat fresh apple as the first one then the third apple fell first from the tree because it is fully eaten by decomposers and these are certain heterotrophic bacteria and fungi which attack the dead remains of the producers and consumers. Here the third apple is fully degraded by decomposers because it fell first and was consumed by decomposers.

Look at the below figure and answer the following questions. What is happening to the mineral salts from the apple?

Decomposers are certain heterotrophic bacteria and fungi which attacks the dead remains of the producers and consumers. Whenever the apple is fell on the ground the decomposers attacks it and make it to degraded in nature hence with the help of decomposers the mineral salts and other nutrients in the apple are again enters into the soil and makes it fertile.

E M B I B E

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 3>Q 6

EASY

Lower Secondary Stage 9

IMPORTANT

Earn 100

What role do decomposers have in food chains?

Important Questions on Ecology

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 3>Q 7

Look at the below figure and answer the following questions.

Question Image

'Which' apple do you think fell from the tree first? Explain your answer.

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 3>Q 7

Look at the below figure and answer the following questions.

Question Image

What is happening to the mineral salts from the apple?

HARD

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 3>Q 8

Using the Internet and/or textbooks to help, draw three food chains that include a tertiary consumer, for habitat in your country. Each food chain should have at least one organism that overlaps with another food chain.

MEDIUM

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 3>Q 8

Make a food web by putting all your food chains together. Be sure that all the different organisms on the same trophic level are at the same height on your diagram.

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 5>Q 2

Explain the term adaptation.

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 7>Q 4

Give three physical adaptations of the polar bear that help it to survive in the Arctic.

EASY

Lower Secondary Stage 9