51. The tetraploid secondary nucleus after fertilization by a male gamete produces a pentaploid endosperm in which of the following plants?
52. In some plants, the flower is modified in such a way that it looks like a female insect and attracts male insect. This modification is used for the pollination and occurs commonly in
53. The boundary layer of air over the green leaves with active microbes is known as
54. Consider the following statements and choose the correct answer:
1. Intense or strong light retards the growth of shoot
2. Shade plants are shorter and stockier than sun plants
3. Shade plants have dense covering of hairs while sun plants are less hairy
4. The stems of shade plants are taIler and more branched than that of sun plants
1. Intense or strong light retards the growth of shoot
2. Shade plants are shorter and stockier than sun plants
3. Shade plants have dense covering of hairs while sun plants are less hairy
4. The stems of shade plants are taIler and more branched than that of sun plants
55. Consider the following statements regarding the vegetation of Rajasthan desert and choose the correct answer:
1. Sand community occupies a large area of Jaisalmer and near about areas
2. Gravel association at Bap to Jaisalmer consists of Boerhhavia diffusa, Cleome papillosa, Fagonia eratea, Aristidia mutabilis etc.
3. Except small isolated hills, the greater portions of Jaisalmer and Jodhpur of Rajasthan are covered by rocks
4. The common shrubs occurring in the sand, gravel and rock communities are Euphorbia nerifolia, some species of twining shrubs like species of Convolvulus, Sarcostemma etc.
1. Sand community occupies a large area of Jaisalmer and near about areas
2. Gravel association at Bap to Jaisalmer consists of Boerhhavia diffusa, Cleome papillosa, Fagonia eratea, Aristidia mutabilis etc.
3. Except small isolated hills, the greater portions of Jaisalmer and Jodhpur of Rajasthan are covered by rocks
4. The common shrubs occurring in the sand, gravel and rock communities are Euphorbia nerifolia, some species of twining shrubs like species of Convolvulus, Sarcostemma etc.
56. The oxidative decarboxylation of pyruvic acid to form acetyl coenzyme A requires the presence of essential cofactors which include
57. Which of the following are climbing woody perennials, which grow upward until their leaves form a part of the forest canopy and become well exposed to the light?
58. The tendency among animals to concentrate in numbers larger than found in normal distribution, and which congregate under various circumstances mostly by their own movements is known as
59. The final steady state or stage in a succession is known as
60. Gaseous exchange takes place in leaves through tiny pores for the purpose of photosynthesis. What are these pores?
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- Plant Anatomy and Physiology - Section 1
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- Plant Anatomy and Physiology - Section 3
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- Plant Anatomy and Physiology - Section 5
- Plant Anatomy and Physiology - Section 7
- Plant Anatomy and Physiology - Section 8
- Plant Anatomy and Physiology - Section 9
- Plant Anatomy and Physiology - Section 10