EASY
12th CBSE
IMPORTANT
Earn 100

Name the type of interaction seen in orchid growing on a branch of a mango tree. (Commensalism/Mutualism)

50% studentsanswered this correctly

Important Questions on Organisms and Populations

EASY
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 13 - Organisms and Populations>TEST QUESTIONS>Q 4
Name the type of interaction seen in the disappearance of smaller barnacles when Balanus dominated on the coast of Scotland.
HARD
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 13 - Organisms and Populations>TEST QUESTIONS>Q 5
List any three ways of measuring the population density of a habitat.
EASY
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 13 - Organisms and Populations>TEST QUESTIONS>Q 5
Mention the essential information that can be obtained by studying the population density of an organism.
HARD
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 13 - Organisms and Populations>TEST QUESTIONS>Q 6
 Explain mutualism with the help of any two examples. How is it different from commensalism?
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 13 - Organisms and Populations>TEST QUESTIONS>Q 7
Write the importance of measuring the size of a population in a habitat or an ecosystem.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 13 - Organisms and Populations>TEST QUESTIONS>Q 7
Explain with the help of an example how the percentage cover is a more meaningful measure of population size than measuring by number.
HARD
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 13 - Organisms and Populations>TEST QUESTIONS>Q 8
Explain birth rate/death rate in a population by taking suitable examples.
EASY
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 13 - Organisms and Populations>TEST QUESTIONS>Q 8
Write two characters which only a population shows but an individual cannot.