Free Plant Nutrition and Transport MCQs with Answers
162 Plant Nutrition and Transport MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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162 questions · page 17 of 17
161. The term "Sink of assimilate" is used to describe:
- A. Buds
- B. Seeds
- C. Root and underground stem
- D. All of the above
Explanation: The term "Sink of assimilate" is used to describe various plant parts like seeds, buds, and underground stems. These plant parts act as storage sites for the sugars and nutrients produced during photosynthesis. They "sink" or receive and store the assimilates, which are the products of photosynthesis. This stored energy can be used later for growth, development, or reproduction. It's like a storage bank for the plant.
Correct answer: All of the above162. C55H70MgN4O6 is the molecular formula of :
- A. Chlorophyll A
- B. Chlorophyll B
- C. Chlorophyll C
- D. Chlorophyll D
Explanation: The above formula represents the structure of chlorophyll b. Chlorophyll b is a pigment found in plants and algae that plays a key role in photosynthesis. It absorbs light energy and transfers it to chlorophyll a, which is the primary pigment involved in capturing sunlight for photosynthesis. The molecular formula provides information about the number and types of atoms present in the chlorophyll b molecule.
Correct answer: Chlorophyll B