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Class 12 Biology - Chapter 13: Organisms and Population MCQ Questions

20 Questions 40 Minutes
Answered: 0 / 20

Your Class 12 Biology Study Path

  1. 1LearnNCERT Solutions
  2. 2PracticeChapter MCQs
  3. 3TestChapter Test
  4. 4PrepareSample Papers
  5. 5Exam PracticePrevious-Year Papers
  6. 6Final CheckMock Test
Question 1

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

Question 2

Lichens are the associations of:

Question 3

What parameters are used for tiger census in our country’s national parks and sanctuaries?

Question 4

If a population of 50 Paramoecium present in a pool increases to 150 after an hour, what would be the per cent growth or birth rate per individual per hour?

Question 5

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

Question 6

Which of the following is a partial root parasite?

Question 7

Amensalism is an association between two species where :

Question 8

A protozoan reproduces by binary fission. What will be the number of protozoans in its population after six generations?

Question 9

A population has more young individuals compared to the older individuals. What would be the status of the population after some years?

Question 10

Autecology is the

Question 11

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

Question 12

Which one of the following organisms reproduces sexually only once in its life time?

Question 13

Biosphere is:

Question 14

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

Question 15

Which of the following would necessarily decrease the density of a population in a given habitat?

Question 16

Ecological niche is:

Question 17

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

Question 18

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

Question 19

In 2005, for each of the 14 million people present in a country, 0.028 were born and 0.008 died during the year. Using exponential equation, the number of people present in 2015 is predicted as:

Question 20

Ecotone is:

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