Which of the following lists has ONLY modified stems in it?
A. potato, ginger, cactus
B. potato, ginger, mango
C. ginger, banana, cactus
D. neem, banyan, grass
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Answer:
option a is the right answer....
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A. potato, ginger, cactus
EXPLANATION:
- In the case of potatoes, cactus, and ginger, small plants arise from the nodes present on the modified stems.
- Potato tubers are an underground modification of the stalk that stores starch. Since these shoots are meristems in nature, there are shoots in the nodes that help new plants grow. Buds are also called eyes.
- Ginger is propagated by rhizomes. It's an underground tribal remodeling. The terminal shoots of the rhizome may or may not grow into aerial shoots. The trunk is split between nodes. Adventitious roots occur on the lower side. Saplings arise from the nodes present on the modified stem.
- The stem is modified with cactus to perform photosynthesis. The stems are flat and green, with a thick layer of wax on top, which helps to perform photosynthesis when the leaves are converted to spines.
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