Thick layer of fat below the skin called blubber helps in reduction of loss of body heat.
The given statement is a characteristic feature of which of the following species?
Important Questions on Organisms and Populations
Reason (R): Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.
In the light of the above statements, choose the correct answer from the options given below.
Reason (R): To enhance transpiration in desert plants
Statement (S): Very small animals are rarely found in the polar regions.
Reason (R): Small animals have a larger surface area relative to their volume and tend to lose body heat.
The correct answer is
Relate Column I with Column II with regard to predatory behaviour
| Column-I | Column-I | ||
| Calotropis | p. | Invertebrates | |
| Pisaster | q. | Distasteful | |
| Monarch butterfly | r. | Cryptically coloured | |
| Frogs | s. | Cardioglycoside |
Observe the following graph of regulators
In the above graph I, II and III represent
With reference to temperature adaptations, identify of the following graph
Hydrilla and Limnophila are examples for the following categories respectively,
i) Free-floating hydrophyte and rooted hydrophyte with floating leaves
ii) Submerged, suspended hydrophyte
iii) An amphibious plant
iv) Submerged, suspended hydrophyte and a free-floating hydrophyte
v) Submerged, rooted hydrophyte and an amphibious plant
The correct combination is
Reason : Brackish water animals can withstand wide fluctuations in salinity
Match List with List.
| List | List | ||
| (a) | Allen's Rule | (i) | Kangaroo rat |
| (b) | Physiological adaptation | (ii) | Desert lizard |
| (c) | Behavioural adaptation | (iii) | Marine fish at depth |
| (d) | Biochemical adaptation | (iv) | Polar seal |
Match the following:
| Set-I | Set-II | ||
| (A) | Endosmosis | (I) | High altitude adaptation |
| (B) | Exosmosis | (II) | Desert adaptation |
| (C) | Metabolic water | (III) | Problem for fresh water animal |
| (D) | Increase in the production | (IV) | Problem for marine animals |
The correct match is
