what which system gets modified in a Potato plant
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It's not that potato plants are called modified stems but that a potato plant has a modified stem. The modified stem is the potato itself -- the potato tuber -- which is just part of the entire plant.
The potato tuber is actually the bottom part of the stem that stores food. It just so happens that the bottom part of this stem is underground. From this swollen part of the stem, roots will develop and from the potato's eyes, the 'branches' (side stems) will push out of the soil forming leaves. If you leave a potato on loosely worked soil and keep it watered, it will send roots down and stems and leaves from its eyes.
I used to grow some potatoes for use during the summer in a similar way. After loosening the soil to make it friable (easily crumbled between fingers), I'd lay a cut potato, eyes facing up, on top the soil. I'd then cover the potato and soil with a 12-18 inch layer of straw. The straw compresses to about 8 inches over the summer. It's only meant to prevent sunlight reaching the potatoes so they don't turn green. The leafy parts could easily push through the straw to reach sunlight. I'd lift the sides of the straw blanket when I wanted new potatoes for a meal and since all the potatoes were growing on top of the soil, I'd just pick the largest ones from some different plants. It didn't disturb the other potatoes or the roots and allowed the smaller ones to continue growing from plants I picked. The bonus was the potatoes were hardly dirty and a quick rinse cleaned them off.
I mention the thick layer of straw to exclude sunlight to prevent new potatoes turning green. It's precisely because a tuber is part of the stem that it will turn green. It's capable of carrying on photosynthesis. Roots are incapable of that which further proves that potatoes are actually modified stems!
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The potato tuber is actually the bottom part of the stem that stores food. It just so happens that the bottom part of this stem is underground. From this swollen part of the stem, roots will develop and from the potato's eyes, the 'branches' (side stems) will push out of the soil forming leaves. If you leave a potato on loosely worked soil and keep it watered, it will send roots down and stems and leaves from its eyes.
I used to grow some potatoes for use during the summer in a similar way. After loosening the soil to make it friable (easily crumbled between fingers), I'd lay a cut potato, eyes facing up, on top the soil. I'd then cover the potato and soil with a 12-18 inch layer of straw. The straw compresses to about 8 inches over the summer. It's only meant to prevent sunlight reaching the potatoes so they don't turn green. The leafy parts could easily push through the straw to reach sunlight. I'd lift the sides of the straw blanket when I wanted new potatoes for a meal and since all the potatoes were growing on top of the soil, I'd just pick the largest ones from some different plants. It didn't disturb the other potatoes or the roots and allowed the smaller ones to continue growing from plants I picked. The bonus was the potatoes were hardly dirty and a quick rinse cleaned them off.
I mention the thick layer of straw to exclude sunlight to prevent new potatoes turning green. It's precisely because a tuber is part of the stem that it will turn green. It's capable of carrying on photosynthesis. Roots are incapable of that which further proves that potatoes are actually modified stems!
..............
Hope it's helps you.
Plz Mark as Brainliast........
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Answer:
(1) Petiole (2) Stem (3) Root (4) Leaf
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