EASY
12th CBSE
IMPORTANT
Earn 100

Graphs A and B shown below depict the interaction of two species. Which graph indicates mutualism? Give a reason.

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Important Questions on Organisms and Populations

MEDIUM
12th CBSE
IMPORTANT
Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 11 - Organisms and Populations>Exercise>Q 1
Cuscuta reflexa is an example of
MEDIUM
12th CBSE
IMPORTANT
Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 11 - Organisms and Populations>Exercise>Q 2
What parameters are used for tiger census in our country's national parks and sanctuaries?
HARD
12th CBSE
IMPORTANT
Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 11 - Organisms and Populations>Exercise>Q 4
In a population, unrestricted reproductive capacity is called as
HARD
12th CBSE
IMPORTANT
Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 11 - Organisms and Populations>Exercise>Q 6

Match the following with correct combinations.

Column I  Column II
A. Mutualism 1. Tiger and Deer
B. Commensalism    2. Cuscuta and Cissus
C. Parasitism  3. Sucker fish and Shark
D. Predation 4. Crab and Sea anemone
MEDIUM
12th CBSE
IMPORTANT
Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 11 - Organisms and Populations>Exercise>Q 7
The logistic growth of population is expressed by the equation
MEDIUM
12th CBSE
IMPORTANT
Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 11 - Organisms and Populations>Exercise>Q 8
Emigration refers to number of individuals
MEDIUM
12th CBSE
IMPORTANT
Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 11 - Organisms and Populations>Exercise>Q 9
Phytophagous insects can be
HARD
12th CBSE
IMPORTANT
Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 11 - Organisms and Populations>Exercise>Q 10
Which one of the following is categorized as a parasite in true sense?