- 1(current)
Q. No.Any attribute of the organism that enables the organism to survive and reproduce in its habitat is called as:
1. Adaptation
2. Phenotypic plasticity
3. Acclimatization
4. Norm of the reaction
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.
Kangaroo rat is capable of meeting all its water requirements through:
1. Storing water when available
2. Dry seeds and foliage
3. Metabolic water
4. Burrowing deep to get water
| I. | Many adaptations have evolved over a long evolutionary time and are genetically fixed. |
| II. | Kangaroo rat has a remarkable ability to concentrate its urine. |
| III. | In Opuntia, leaves are reduced to spines and the photosynthetic function is taken over by the flattened stems. |
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II, and III
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.
All the following are adaptations in desert plants to minimize water loss except:
1. Thick cuticle
2. photosynthesis
3. CAM pathway
4. Sunken stomata
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 thick layer of fat, blubber, beneath the skin is found in:
1. Terrestrial mammals of colder climates
2. Aquatic mammals of colder climates
3. Terrestrial mammals of warmer climates
4. Aquatic mammals of warmer climates
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.
High altitude acclimatization in humans include all the following except:
| 1. | Increased RBC production |
| 2. | Increased breathing rate |
| 3. | Increased heart rate |
| 4. | Increased binding affinity of haemoglobin |
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.
| Assertion (A): | Tribes living in high altitudes of Himalayas normally have a higher RBC count [or total haemoglobin] than people living in the plains. |
| Reason (R): | In low atmospheric pressure of high altitudes, the hypoxic conditions lead to an increased production of RBCs by bone marrow. |
| 1. | Both (A) and (R) are true and (R) explains (A). |
| 2. | (A) is true but (R) is false. |
| 3. | (A) is false but (R) is true. |
| 4. | Both (A) and (R) are true but (R) does not explain (A). |
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.
| Assertion (A): | Ice fish is able to thrive in Antarctic water where the temperature is always below zero. |
| Reason (R): | They have a special haemoglobin molecule that has very high affinity for oxygen. |
| 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. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
| 1. | Cryptic colouration | 2. | Aposematic colouration |
| 3. | Batesian mimicry | 4. | Mullerian mimicry |
- 1(current)
Q. No.
© 2024 GoodEd Technologies Pvt. Ltd.