What percent of animals cannot maintain a constant internal environment?
1. 1 %
2. 25 %
3. 45 %
4. 99 %

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 80%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Very small animals are rarely found in polar regions because:

1. Being smaller in size makes them highly vulnerable to predation.
2. They have a larger surface area relative to their volume.
3. Small size makes long distance migration difficult.
4. Small sized animals lack insulating body layers.

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 88%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Keoladeo National Park, host to migratory birds from Siberia, is in:

1. Rajasthan 2. Uttar Pradesh
3. Madhya Pradesh 4. Gujarat

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 89%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

In animals, the organism, if unable to migrate, might avoid the stress by escaping in time. All the following would exemplify this except:

1. Hibernation 2. Aestivation
3. Diapause 4. Migration

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 77%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Under unfavorable conditions, many zooplankton species in lakes and ponds are known to enter a stage of suspended development called as:

1. Dormancy 2. Hibernation
3. Aestivation 4. Diapause
Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 90%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


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

Subtopic:  Adaptations (OLD NCERT) |
 88%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

All the following are adaptations in desert plants to minimize water loss except:
1. Thick cuticle
2. C3 photosynthesis
3. CAM pathway
4. Sunken stomata

Subtopic:  Adaptations (OLD NCERT) |
 87%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


According to Allen’s rule:

1. Mammals from colder climates generally have shorter appendages
2. Mammals from colder climates generally have longer appendages
3. Mammals from colder climates generally have smaller body size
4. Mammals from colder climates generally have larger body size
Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 77%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

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

Subtopic:  Adaptations (OLD NCERT) |
 71%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

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
Subtopic:  Adaptations (OLD NCERT) |
 82%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.