List-I | List-II | ||
A. | Tertiary consumer | I. | Grass |
B. | Secondary consumer | II. | Lion |
C. | Primary consumer | III. | Wolf |
D. | Primary producer | IV. | Goat |
Statement I: | The rate of decomposition is not related to chemical composition of detritus and climatic factors. |
Statement II: | In a particular climatic condition, decomposition rate is faster if detritus is rich in lignin and chitin. |
1. | It can vary from small sized pond to large sized sea |
2. | It may be anthropogenic in origin |
3. | It may be temporary or Permanent |
4. | It involves the function of flow of energy but not recycling of nutrients |
A: | Detrivores perform fragmentation. |
B: | The humus is further degraded by some microbes during mineralization. |
C: | Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching. |
D: | The detritus food chain begins with living organisms. |
E: | Earthworms break down detritus into smaller particles by a process called catabolism. |
1. | D, E, A only | 2. | A, B, C only |
3. | B, C, D only | 4. | C, D, E only |
Given below are two statements:
Statement I: | Pyramid of energy is always upright and is the most efficient. |
Statement II: | Pyramid of biomass in sea is generally inverted. |
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is correct but Statement II is incorrect.
2. Statement I is incorrect but Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
Which of the following is not correct regarding the decomposition of wastes?
(a) | Low temperature inhibits decomposition |
(b) | Warm and moist environment favors the process |
(c) | The process is anaerobic |
(d) | It is slower if detritus is rich in proteins and carbohydrates |
(e) | Detritus is degraded into simpler inorganic substance by fungal and bacterial enzymes |
Choose the correct answer from the options given below:
1. | (b) and (c) only | 2. | (c), (a) and (d) only |
3. | (c) and (d) only | 4. | (c), (d) and (e) only |