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Q. No.Who is revered as ‘the father of ecology’ in India?
1. Gurdev Singh Khush
2. Panchanan Maheshwari
3. M. S. Swaminathan
4. Ramdeo Misra
Subtopic: Introduction to Ecology |
80%
From NCERT
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Subtopic: Population Interactions: Predation |
83%
From NCERT
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Consider the two statements:
| I: | In ecology, the term “niche” describes the role an organism plays in a community. |
| II: | A species’ niche encompasses both the physical and environmental conditions it requires and the interactions it has with other species. |
1. I is correct; II is correct
2. I is correct; II is incorrect
3. I is incorrect; II is correct
4. I is incorrect; II is incorrect
Subtopic: Introduction to Ecology | Organisms and its Environment |
88%
From NCERT
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The human liver fluke:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | is a member of Platyhelminthes. |
| II: | depends on two intermediate hosts (a snail and a fish) to complete its life cycle. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Population Interactions: Parasitism |
88%
From NCERT
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If N is the population density at time t, then its density at time t +1 is [B is births; I is immigration;
D is deaths; E is emigration]:
1. Nt+1 = Nt + [(B + I) – (D + E)]
2. Nt+1 = Nt + [(B + I) + (D + E)]
3. Nt+1 = Nt + [(B + I) (D + E)]
4. Nt+1 = Nt + [(B + I) / (D + E)]
D is deaths; E is emigration]:
1. Nt+1 = Nt + [(B + I) – (D + E)]
2. Nt+1 = Nt + [(B + I) + (D + E)]
3. Nt+1 = Nt + [(B + I) (D + E)]
4. Nt+1 = Nt + [(B + I) / (D + E)]
Subtopic: Population Attributes |
95%
From NCERT
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Which of the following will represent a higher Darwinian Fitness?
1. Low r value
2. High r value
3. Low carrying capacity
4. High carrying capacity
1. Low r value
2. High r value
3. Low carrying capacity
4. High carrying capacity
Subtopic: Life History Variations |
84%
From NCERT
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Camouflage is:
1. cryptic coloration
2. aposematic coloration
3. bioluminescence
4. phenotypic plasticity
1. cryptic coloration
2. aposematic coloration
3. bioluminescence
4. phenotypic plasticity
Subtopic: Population Interactions: Predation |
84%
From NCERT
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Most common morphological defence adaption against herbivory in plants is the presence of:
1. toxic metabolites
2. thorns
3. spines
4. slime
1. toxic metabolites
2. thorns
3. spines
4. slime
Subtopic: Population Interactions: Predation |
77%
From NCERT
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Lichens is a mutualistic symbiotic relationship between:
1. An alga and a fungus
2. An alga and a blue green alga
3. A fungus and roots of vascular plants
3. Zooxanthellae and plants
1. An alga and a fungus
2. An alga and a blue green alga
3. A fungus and roots of vascular plants
3. Zooxanthellae and plants
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
90%
From NCERT
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The Verhulst-Pearl Logistic growth equation is correctly written as [N - population size; r - the intrinsic growth rate, K - carrying capacity of the local environment]:
1. dN/dt = rN[1- N/K]
2. dN/dt = rN[1- K/N]
3. dN/dt = rN + [1- N/K]
4. dN/dt = rN + [1- K/N]
1. dN/dt = rN[1- N/K]
2. dN/dt = rN[1- K/N]
3. dN/dt = rN + [1- N/K]
4. dN/dt = rN + [1- K/N]
Subtopic: Population: Logistic Growth Model |
74%
From NCERT
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