MCQ
Which region is rich in species diversity?
- ANorth Pole
- BTemperate region
- CTropical region
- DSouth Pole
Explanation:
Species diversity increases towards the equator. The two main reasons are phylogenetic niche conservatism and ecological productivity.
The relatively high temperatures in the tropics generate and maintain high diversity.
However, the tropical rainforests in developing countries are getting cleared nowadays, which is leading to a great loss of biodiversity.
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$R$ : Detrivores like fungi and bacteria are major decomposers in such food chains.
| Column $-I$ | Column $-II$ |
| $(A)$ Physical barriers | $(1)$ Interferon |
| $(B)$ Physiological barriers | $(2)$ Leukocytes |
| $(C)$ Cellular barriers | $(3)$ Tears |
| $(D)$ Cytokinin barriers | $(4)$ skin |
$A$ $B$ $C$ $D$
| | Bacterium | | Product |
| i. | Aspergillus niger | a. | Lactic acid |
| ii. | Acetobacter aceti | b. | Butyric acid |
| iii. | Clostridium butylicum | c. | Acetic acid |
| iv. | Lactobacillus | d. | Citric acid |