91. The photoperiod in plants is perceived at
92. Water is a dipolar substance in that
93. Which of the following are known to be the single largest cause of elevated terrestrial temperatures from the greenhouse effect, accounting for approximately one-half of the problem?
94. Which of the following diseases is popularly known as tikka disease?
95. The reducing power generated in the bacteroids is transferred to the nitrogen fixing membrane via
96. The minimum quantity of any factor that produces a precipitable effect on the organism is known as
97. The first concrete evidence of nitrogen fixation by blue-green algae came from the work of
98. The most abundant enzyme in the living world is
99. Which of the following groups of elements are trace elements?
100. In most fruits, due to ethylene, the rate of respiration will undergo a sharp rise and then fall near the end of ripening which is known as
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- Plant Anatomy and Physiology - Section 10