Which of the following come under the "Evil Quarter"?
(a) Habitat loss and fragmentation | |
(b) Over-exploitation | (c) Alien species invasion |
(d) Mortality | (e) Competition |
Choose the correct answer from the options given below:
1. | (a), (c) and (d) | 2. | (b), (c) and (d) |
3. | (a), (b) and (c) | 4. | (a), (b) and (d) |
Species Area relationship is described by the following equation.
log S = log C + Z log A
where Z is:
1. | Area | 2. | Species richness |
3. | Slope of the line | 4. | Y-intercept |
Endemism refers to:
1. | Species richness | 2. | Species evenness |
3. | Species confined to that region | 4. | Species diversity |
(a) Plants | (b) Invertebrates | (c) Fishes |
(d) Mammals | (e) Birds |
1. | (a) > (b) > (e) > (d) > (c) | 2. | (a) > (c) > (d) > (b) > (e) |
3. | (b) > (a) > (e) > (d) > (c) | 4. | (b) > (a) > (c) > (e) > (d) |
1. | A significant reduction in the current rate of biodiversity loss. |
2. | Declaration of more biodiversity hotspots. |
3. | Increase in agricultural production |
4. | Collection and preservation of seeds of different genetic strains of commercially important plants. |
List-I | List-II | ||
(a) | Sacred groves | (i) | Alien species |
(b) | Zoological park | (ii) | Release of large quantity of oxygen |
(c) | Nile perch | (iii) | Ex-situ conservation |
(d) | Amazon forest | (iv) | Khasi Hills in Meghalaya |
(a) | (b) | (c) | (d) | |
1. | (iv) | (iii) | (i) | (ii) |
2. | (ii) | (iv) | (i) | (iii) |
3. | (iv) | (i) | (ii) | (iii) |
4. | (iv) | (iii) | (ii) | (i) |
1. | lack of niche specialisation |
2. | higher annual rainfall |
3. | availability of fruits throughout the year |
4. | temperature conducive for their breeding |
1. | Threatened species | 2. | Keystone species |
3. | Endemic species | 4. | Vulnerable species |
According to Alexander von Humboldt :
1. | Species richness decreases with increasing area of exploration |
2. | Species richness increases with the increasing area, but only up to a limit |
3. | There is no relationship between species richness and the area explored |
4. | Species richness goes on increasing with increasing area of exploration |
Which one of the following is not observed in biodiversity hotspots?
1. Lesser interspecific competition
2. Species richness
3. Endemism
4. Accelerated species loss