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 1>Q 2

EASY

Lower Secondary Stage 9

IMPORTANT

Earn 100

This is a food chain of some organisms in Madagascar:

Maize → locust → gecko → eagle

Explain where the locust gets its energy from and how you can tell this from this diagram.

Important Questions on Ecology

MEDIUM

Lower Secondary Stage 9

IMPORTANT

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

Name a secondary consumer shown in the given food web.

Question Image

MEDIUM

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 2>Q 4

Write down two food chains shown in this food web, both including the hippopotamus.

Question Image

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 3 - Ecology>Exercise 2>Q 4

Explain why the secondary consumer could be different in each food chain.

HARD

Lower Secondary Stage 9

IMPORTANT

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

Suggest what might happen to the number of zebras in this habitat if all the wildebeest moved to the new land.

Question Image

EASY

Lower Secondary Stage 9

IMPORTANT

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

What role do decomposers have in food chains?

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.