State the term used for shade plants.

Important Questions on Organisms and Populations

HARD

12th ICSE

IMPORTANT

ISC Biology Class XII>Chapter 13 - Organisms and Populations>Chapter Practice>Q 9

What do you understand by ecophene?

HARD

12th ICSE

IMPORTANT

ISC Biology Class XII>Chapter 13 - Organisms and Populations>Chapter Practice>Q 10

What would be the growth rate pattern when the resources are unlimited?

MEDIUM

12th ICSE

IMPORTANT

ISC Biology Class XII>Chapter 13 - Organisms and Populations>Chapter Practice>Q 11

Name the association between fungus and roots of higher plants.

HARD

12th ICSE

IMPORTANT

ISC Biology Class XII>Chapter 13 - Organisms and Populations>Chapter Practice>Q 12

Name two dominant plant species of mangroves.

HARD

12th ICSE

IMPORTANT

ISC Biology Class XII>Chapter 13 - Organisms and Populations>Chapter Practice>Q 13

What is meant by sex ratio? Is it a characteristic of an individual or a population?

HARD

12th ICSE

IMPORTANT

ISC Biology Class XII>Chapter 13 - Organisms and Populations>Chapter Practice>Q 14

Why are predators considered prudent in nature?

HARD

12th ICSE

IMPORTANT

ISC Biology Class XII>Chapter 13 - Organisms and Populations>Chapter Practice>Q 15

State any three methods by which animals cope with the temporary unfavourable conditions in their habitat when they cannot migrate.

HARD

12th ICSE

IMPORTANT

ISC Biology Class XII>Chapter 13 - Organisms and Populations>Chapter Practice>Q 16

Write the formula for the change in population density.