Ecological niche is:

Important Questions on Organisms and Populations

EASY

12th CBSE

IMPORTANT

Xam Idea Biology>Chapter 13 - Organisms and Populations>Multiple Choice Questions [1 mark]>Q 5

When the birth rate equals the death rate,

MEDIUM

12th CBSE

IMPORTANT

Xam Idea Biology>Chapter 13 - Organisms and Populations>Multiple Choice Questions [1 mark]>Q 6

According to Allen’s Rule, the mammals from colder climates have

EASY

12th CBSE

IMPORTANT

Xam Idea Biology>Chapter 13 - Organisms and Populations>Multiple Choice Questions [1 mark]>Q 7

Salt concentration (Salinity) of the sea measured in parts per thousand is 

MEDIUM

12th CBSE

IMPORTANT

Xam Idea Biology>Chapter 13 - Organisms and Populations>Multiple Choice Questions [1 mark]>Q 8

Formation of tropical forests needs mean annual temperature and mean annual precipitation as

EASY

12th CBSE

IMPORTANT

Xam Idea Biology>Chapter 13 - Organisms and Populations>Multiple Choice Questions [1 mark]>Q 9

Which of the following forest plants controls the light conditions at the ground?

EASY

12th CBSE

IMPORTANT

Xam Idea Biology>Chapter 13 - Organisms and Populations>Multiple Choice Questions [1 mark]>Q 10

What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?

MEDIUM

12th CBSE

IMPORTANT

Xam Idea Biology>Chapter 13 - Organisms and Populations>Multiple Choice Questions [1 mark]>Q 11

If a population of 50 Paramecium present in a pool increases to 150 after an hour, what would be the growth rate of the population?

MEDIUM

12th CBSE

IMPORTANT

Xam Idea Biology>Chapter 13 - Organisms and Populations>Multiple Choice Questions [1 mark]>Q 12

If a population of 50 Paramecium present in a pool increases to 150 after an hour. What would be the percent growth or birth rate per individual per hour for the same population ?