PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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no minerals can be transported by the damaged phloem.
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no sugars can be translocated by the damaged phloem to root cells.
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chlorophylls will be disintegrate if phloem is damaged.
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not enough magnesium is transported to new cells for synthesizing chlorophylls.
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Detailed explanation-1: -Several abiotic factors that affect phloem transport include water and salt stress, mineral deficiency, CO2, light, temperature, air, and soil pollutants, while biotic factors include mutualistic and pathogenic microbes, viruses, aphids and parasitic plants.
Detailed explanation-2: -Sucrose transport is favorable for the following reasons: (i) 1 mol sucrose contains more energy than 1 mol of a monosaccharide such as glucose or fructose, thus using the disaccharide is more energy efficient for transport and storage.
Detailed explanation-3: -So, the correct option is ‘Passive transport’
Detailed explanation-4: -Phloem is a vascular tissue that helps in transportation of sugars and other organic substances from leaves to various plant parts. They transport food in both directions. The tranportation of food, also known as translocation, is an active process i.e., it occurs with the expenditure of energy (ATP).