If global warming continues, how would the distributional range of some species be affected?
1. There will be a poleward shift
2. There will be an equatorial shift
3. No change is expected for any species
4. There will be shift from land to marine water

Which of the following algae is likely to be found in the deepest waters?
1.Green
2.Brown
3.Red
4.All are found at equal depths

Thermoregulation and osmoregulation can be achieved by all:
1. Amniotes
2. Birds and mammals
3. Vertebrates
4. Chordates and insects

When exposed to cold temperatures, which of the following is responsible for maintaining constant body temperature in humans?
1. Vasoconstriction and shivering
2. Vasodilation and shivering
3. Vasodilation and sweating
4. Vasoconstriction and sweating

Very small animals are rarely found in polar regions because:

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

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

All the following are adaptations in desert plants to minimize water loss except:
1. Thick cuticle
2. ${\mathrm{C}}_3$ photosynthesis
3. CAM pathway
4. Sunken stomata

According to Allen’s rule:

High altitude acclimatization in humans include all the following except: