71. Carbon dioxide diffuses directly from the atmosphere and is readily dissolved in water to result in
72. The dark conversion of Pfr to the Pr form of phytochrome appears to be restricted to the
73. If an unvemalized henbane plant is grafted to a Maryland Mammoth tobacco plant,
74. At temperatures above absolute zero, all components of matter are in motion - that is, they possess a certain amount of
75. Each chlorophyll has a fifth ring containing only
76. In which of the following schizocarpic dry fruit types, the fruit is produced from a bicarpellary, syncarpous, bilocular and inferior ovary?
77. Consider the following statements and choose the correct answer:
1. The grassland biome is found where rainfall is about 60 - 70 inches
2. Grasslands provide natural pasture for grazing animals and our principal agricultural food plants have been developed by artificial selection from the grasses
3. The birds characteristic of grasslands are prairie chickens, meadow larks and rodent hawks
4. The species of grasses present in any given grassland may range from tall species, 150 to 250 cm in height, to short species of grass that do not exceed 15 cm in height
1. The grassland biome is found where rainfall is about 60 - 70 inches
2. Grasslands provide natural pasture for grazing animals and our principal agricultural food plants have been developed by artificial selection from the grasses
3. The birds characteristic of grasslands are prairie chickens, meadow larks and rodent hawks
4. The species of grasses present in any given grassland may range from tall species, 150 to 250 cm in height, to short species of grass that do not exceed 15 cm in height
78. The rate of storage of organic matter or energy not used by heterotrophs in the community in a given time is known as
79. The type of xerophilous plants which grow on saline soil with high concentration of salts like NaCI, MgCl2 and MgSO4 are known as
80. When the variants of an enzyme are within the same species of an organism they are called
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- Plant Anatomy and Physiology - Section 9
- Plant Anatomy and Physiology - Section 10