An example of edible underground stem is:
An example of edible underground stem is:
Show Hint
Modified stems that are located below ground are bulbs, corms, rhizomes, and tubers
Carrot
Groundnut
Sweet potato
Potato
The Correct Option is D
Solution and Explanation
Modified stems that are located below ground are bulbs, corms, rhizomes, and tubers. Potato is the edible portion of an underground stem that is a tuber. The eyes of the potato are lateral buds.
- The carrot is a modified tap root for food storage.
- Sweet potato is a modified adventitious root specialized for the storage of food. They arise from parts of plants other than the radicle.
- Groundnut is an edible seed.
Carrot and sweet potato are root modifications while the edible part of groundnut is seeds.
Therefore, D) potato is an edible underground stem.
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Concepts Used:
Morphology of Flowering Plants
Morphology in flowering plants tells us that every plant has two systems such as a root system and a shoot system. The root system digs deep into the ground and structures a system of its own. On the other hand, the shoot system is the one that is above ground level and includes various plant parts.
Root System
The descending part of the plant grows under the soil roots. During the germination process, the radicle from the seed grows earthward and branches out. The branches along with the primary root are called the root system. Roots lack chlorophyll and therefore they are not green in color. Roots are positively geotropic and hydrotropic, that is, they grow downwards ground and water, and negatively phototropic, which is growing away from light.
There are three types of root systems found in plants are as follows:
- TapRoot System
- Fibrous Root System
- Adventitious Root System
Shoot System
The stem is also an essential element of the plant. It is the ascending portion of the plant axis that bears branches, flowers, leaves, and fruits, as well as aiding in water and mineral conduction. It is the plant's aerial portion, brought about from an embryo's plumule or germinating seeds. Young stems are ordinarily green, but they finally turn woody and brown.