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Q. No.The maximum population size of the species that an environment can sustain indefinitely is called
1. biotic potential
2. natality
3. environmental resistance
4. carrying capacity
69%
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The prickly pear cactus introduced into Australia in the early 1920’s was finally brought under control with the help of:
1. a fungus
2. a moth
3. rabbits
4. kangaroos
1. a fungus
2. a moth
3. rabbits
4. kangaroos
86%
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What type of growth status the given pyramid represents?
1. Declining population.
2. Stable population.
3. Expanding population.
4. None of the above.
1. Declining population.
2. Stable population.
3. Expanding population.
4. None of the above.
Subtopic: Age Pyramid |
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From NCERT
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The graphs (X) and (Y) given below depict the diurnal variations in the solar radiations in the month of may (summer) and in December (Winter).
Which of the two graphs ____I____ and ____II____ depicts tropical regions and temperate regions respectively?
1. I-X and II-Y
2. I-Y and II-X
3. I-X and II-X
4. I-Y and II-Y
Which of the two graphs ____I____ and ____II____ depicts tropical regions and temperate regions respectively?
1. I-X and II-Y
2. I-Y and II-X
3. I-X and II-X
4. I-Y and II-Y
Subtopic: Abiotic Factors: Light & Water (OLD NCERT) |
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Many copepods live n the body surface of marine fish. This relationship is an example:
1. Commensalism
2. Parasitism
3. Amensalism
4. Mutulism
1. Commensalism
2. Parasitism
3. Amensalism
4. Mutulism
Subtopic: Population Interactions: Parasitism |
65%
From NCERT
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Interaction between clown fish living among the stinging tentacles of sea anemone is an example of
1. Amensalism
2. Parasitism
3. Mutualism
4. Commensalism
1. Amensalism
2. Parasitism
3. Mutualism
4. Commensalism
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
86%
From NCERT
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Important attributes belonging to a population but not to an individual are:
(i) Birth rate and death rate
(ii) Male and Female
(iii) Birth and Death
(iv) Sex-ratio
Select the correct option from the given options:
1. (i) only
2. (ii) only
3. (ii) and (iii)
4. (i) and (iv)
(i) Birth rate and death rate
(ii) Male and Female
(iii) Birth and Death
(iv) Sex-ratio
Select the correct option from the given options:
1. (i) only
2. (ii) only
3. (ii) and (iii)
4. (i) and (iv)
Subtopic: Population Attributes |
81%
From NCERT
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A Tight one-to-one relationship between many species of fig tree and certain wasps is an example of
1. Commensalism
2. Parasitism
3. Amensalism
4. mutualism
1. Commensalism
2. Parasitism
3. Amensalism
4. mutualism
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
88%
From NCERT
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At higher altitudes:
I: erythropoietin secretion is increased.
II: respiratory rate decreases.
III: the affinity of hemoglobin for oxygen is increased
1. Only I is correct
2. Only II and III are correct
3. I, II and III are correct
4. Only I and III are correct
I: erythropoietin secretion is increased.
II: respiratory rate decreases.
III: the affinity of hemoglobin for oxygen is increased
1. Only I is correct
2. Only II and III are correct
3. I, II and III are correct
4. Only I and III are correct
Subtopic: Adaptations (OLD NCERT) |
60%
From NCERT
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Anemonefish, or “clownfish”, are certain species of fish that live inside of anemones. Unlike all other fish, they are protected from the stings of the anemone’s tentacles. The anemonefish uses the anemone for protection and feeds off of the scraps the anemone leaves behind. Sometimes, the anemone gets parasites that the anemonefish can pick off, and the anemonefish chases away fish that like to eat anemones. How would you classify their symbiosis?
1. parasitism
2. commensalism
3. mutualism
4. predation
1. parasitism
2. commensalism
3. mutualism
4. predation
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
81%
From NCERT
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