Identify the characters related to xerophytes from the following:
A) Stunted stems
B) Reduced leaves
C) Single layered epidermis
D) Well developed vascular bundles
E) More air cavities
Important Questions on Organisms and Populations
With reference to temperature adaptations, identify of the following graph
Reason (R): To enhance transpiration in desert plants
Observe the following graph of regulators
In the above graph I, II and III represent
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
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
Reason : Brackish water animals can withstand wide fluctuations in salinity
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
