Consider three sample areas with the following composition:
Sample area I: | has three species of birds, two are represented by one individual each and the third by four individuals |
Sample area II: | has three species of birds, each represented by two individuals |
Sample area III: | has a species of insects, a species of mammals and a species of birds, each with two individuals |
Which area will be considered as the most diverse?
1. Sample area I
2. Sample area II
3. Sample area III
4. Sample area II and Sample area III are equally diverse
Regarding the gradients of biodiversity:
I: | As we move from poles to the equator, broadly speaking, biodiversity decreases. |
II: | There is an increase in species diversity from lower to higher altitudes. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Plants are an important source of medicines for human use. Identify the incorrectly matched pair:
|
PLANT |
MEDICINE |
1. |
Taxusbrevifolia |
Anticancer drug |
2. |
Cinchona officinalis |
Anti-malarial |
3. |
Rauwolfiaserpentina |
Anti-hypertensive |
4. |
Catharanthusroseus |
Anti-helminthic |
The pink headed duck has got extinct mainly due to:
1. Habitat destruction
2. Overexploitation
3. Alien invasion
4. Pollution
Identify the correct statements regarding the “EDGE” species:
I. They are the only survivor members of their genus or even higher taxon.
II. To increase their conservation many are designated as “focal” species
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
The ‘Himalayan Quail’ got extinct due to:
1. Habitat destruction
2. Overexploitation
3. Alien invasion
4. Pollution
A bird that was previously thought to be extinct till its rediscovery in 1986 by Bharat Bhushan of Bombay Natural History Society is:
1. Great Indian Bustard
2. Jerdon’s Courser
3. White Peacock
4. Siberian crane
The type of species that will most likely be supported by small parks will be:
1. | k - selected species | 2. | r - selected species |
3. | climax species | 4. | species with small niches |
Destruction of all tropical rainforests will lead to the extinction of approximately what percent of species found on the earth?
1. 10
2. 20
3. 50
4. 90
Fishes can be killed by acid rain due to the release of:
1. aluminum ions
2. carbon monoxide
3. anticoagulants
4. mercury