1.
As land becomes intensively farmed or urbanised, there is tendency for increased variety and density of wildlife population at community ecotones which is known as

2.
Match List-I (Kinds of aperture) with List-II (Characteristic features) and select the correct answer:
List-I List-II
a. Sulcus 1. A round aperture if present in small numbers pori are found in the equatorial region
b. Colpa 2. A longitudinal furrow is found to the distal half of the pollen grain, crossing the pollar axis at right angles
c. Ruga 3. A meridional furrow crossing the equator at right angles and directed at each end to the polls of the pollen grain
d. Porus 4. A furrow is found irregularly on the grain surface

9.
The vegetation of megaphytes which is not fixed but either free swimming or free floating like plankton is called