21. The external appearance of the community which may be described on the basis of dominant plants, density, height, colour etc. of the plants is known as
22. In which of the following a strip of definite width and of length suitable for studying vegetation is marked out and plotted, then plants occurring along the strip are recorded?
23. Consider the following statements regarding the symptoms of loose smut of wheat and choose the correct answer:
1. The smutted ears from the boot leaves a little earlier than the healthy ones
2. All the ovaries and other floral parts including the awns and rachics are converted into masses of smut spores
3. The spores of each spikelet are covered by a thin greyish or silvery membrane
4. The ear is generally completely destroyed
1. The smutted ears from the boot leaves a little earlier than the healthy ones
2. All the ovaries and other floral parts including the awns and rachics are converted into masses of smut spores
3. The spores of each spikelet are covered by a thin greyish or silvery membrane
4. The ear is generally completely destroyed
24. The most mobile mineral in the plant body is
25. Which of the following plants is the alternate host of orange leaf rust?
26. Which of the following layers of the pollen grain covers the whole grain?
27. Consider the following statements.
1. The energy currency of cell is ATP (Adenocine Triphosphate).
2. Maximum amount of energy (ATP) is liberated on oxidation of fat.
3. Alcohol is a product of anaerobic respiration.
Which of the statement(s) given above is/are true ?
1. The energy currency of cell is ATP (Adenocine Triphosphate).
2. Maximum amount of energy (ATP) is liberated on oxidation of fat.
3. Alcohol is a product of anaerobic respiration.
Which of the statement(s) given above is/are true ?
28. In which of the following endemic types the taxa are supposed to have evolved only during the recent times and did not have sufficient time to extend their ranges of distribution?
29. Consider the following statements and choose the correct answer:
1. Every species of animal and plant tends to produce more offspring than can survive within the normal range of the organism
2. There is a strong population pressure tending to force the individuals of each species to spread out and become established in new territories
3. The spread of a species is prevented by highways, such as land connections between continents
4. The spread of species is facilitated by geographical barriers, such as oceans, mountains, deserts and large rivers
1. Every species of animal and plant tends to produce more offspring than can survive within the normal range of the organism
2. There is a strong population pressure tending to force the individuals of each species to spread out and become established in new territories
3. The spread of a species is prevented by highways, such as land connections between continents
4. The spread of species is facilitated by geographical barriers, such as oceans, mountains, deserts and large rivers
30. Plasticity in plant growth means that
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- Plant Anatomy and Physiology - Section 1
- Plant Anatomy and Physiology - Section 2
- Plant Anatomy and Physiology - Section 3
- Plant Anatomy and Physiology - Section 5
- Plant Anatomy and Physiology - Section 6
- Plant Anatomy and Physiology - Section 7
- Plant Anatomy and Physiology - Section 8
- Plant Anatomy and Physiology - Section 9
- Plant Anatomy and Physiology - Section 10