Assertion (A): | In every species, there are trade-offs between survival and reproductive traits. |
Reason (R): | Life history traits are products of natural selection. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | The human population is no longer growing exponentially but is still increasing rapidly. |
Reason (R): | Most countries of the world have undergone a demographic transition. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
‘Realized niche’ of an organism can be best described as:
1. | the area a species can occupy in the face of exploitive competition |
2. | the habitat of a species within a community resulting from clumping |
3. | the habitat that exists in nature as opposed to the ideal |
4. | the life pattern that the organism actually assumes |
The competitive exclusion principle can be best expressed as:
1. | the more abundant species will exclude the less abundant species through competition |
2. | competition for the same resources excludes species having different lifestyles |
3. | no two species can occupy the same niche indefinitely when resources are limited |
4. | larger organisms exclude smaller ones through competition as in the case of large trees controlling underbrush |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
A parasitism that does not involve feeding on the body of the host is:
1. | ectoparasitism | 2. | endoparasitism |
3. | parasitoids | 4. | brood parasitism |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The adaptation that a prey species avoid being detected by a predator would be:
1. Mullerian mimicry
2. Batesian mimicry
3. aposematic coloration
4. cryptic coloration
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The chemical defence produced by plants against herbivory are:
1. | primary metabolites | 2. | secondary metabolites |
3. | cofactors | 4. | pollens |
All the following are symbiotic relations except:
1. monarch butterflies and viceroy butterflies
2. lichens
3. mycorrhizae
4. tapeworms and humans
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The two species physically interfere with one another by aggressively attempting to exclude one another from particular habitats in:
1. | competitive exclusion | 2. | predation |
3. | exploitative competition | 4. | interference competition |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Monarch butterflies are toxic and unpalatable to predators because they:
1. | incorporate the toxic chemicals from the milkweed they eat |
2. | produce their own secondary compounds |
3. | break down the toxic chemicals from the milkweed they eat |
4. | live with symbionts that secret toxins |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.