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12.Ecosystem
medium
Distinguish between
$(a)$ Litter and detritus
$(b)$ Primary and secondary productivity
Option A
Option B
Option C
Option D
Solution
$(a)$ Litter and detritus
| Litter | Detritus | ||
| $1$. Litter contains all kinds of wastes generated above the ground. | $1$. Detritus is composed of the remains of dead plants and animals. | ||
| $2$. Litter contains both biodegradable and non-biodegradable matter. | $2$. Detritus contains only biodegradable matter. |
$(b)$ Primary and secondary productivity
| Primary productivity | Secondary productivity | |
| $1$. It is defined as the amount of organic matter produced by producers per unit area over a period of time. | $1$. It is defined as the rate of production of organic matter by consumers over a period of time. | |
Standard 12
Biology
