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Q. No.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
Subtopic: Life History Variations |
84%
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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Who is revered as ‘the father of ecology’ in India?
1. Gurdev Singh Khush
2. Panchanan Maheshwari
3. M. S. Swaminathan
4. Ramdeo Misra
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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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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