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Question
A meristematic tissue present on the upper parts of the plant body lacks
A meristematic tissue present on the upper parts of the plant body lacks
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Solution
The correct option is D Chloroplast
- Epidermis is the meristematic tissue present on the upper parts of the plant body. The epidermis is the outermost cellular layer that covers the whole plant structure, i.e., it covers roots, stem, leaves, flowers, and fruit. It is composed of a single layer of living cells, although there are exceptions.
- Epidermis is usually closely packed, without intercellular spaces or chloroplasts.
- The outer walls, which are exposed to the atmosphere and usually thickened, and may be covered by a waxy, waterproof cuticle which is made up of cutin. Apart from the normal epidermal cells, there are also stomata in the epidermis of leaves and stems.
- A stoma is an opening (pore) which is bounded by two bean-shaped cells called guard cells.
- The guard cells differ from normal epidermal cells in that they have chloroplasts and the cell walls are thickening unevenly.
- The outer wall is thin and the inner wall (nearest the opening) is thick. The thin-walled epidermal cells of roots give rise to root hairs.
- Hair- like outgrowths may also be found in the epidermis of leaves and stems. The epidermis has a cell membrane, nucleus, and cellulose.
Therefore, the correct answer is option D.
- Epidermis is the meristematic tissue present on the upper parts of the plant body. The epidermis is the outermost cellular layer that covers the whole plant structure, i.e., it covers roots, stem, leaves, flowers, and fruit. It is composed of a single layer of living cells, although there are exceptions.
- Epidermis is usually closely packed, without intercellular spaces or chloroplasts.
- The outer walls, which are exposed to the atmosphere and usually thickened, and may be covered by a waxy, waterproof cuticle which is made up of cutin. Apart from the normal epidermal cells, there are also stomata in the epidermis of leaves and stems.
- A stoma is an opening (pore) which is bounded by two bean-shaped cells called guard cells.
- The guard cells differ from normal epidermal cells in that they have chloroplasts and the cell walls are thickening unevenly.
- The outer wall is thin and the inner wall (nearest the opening) is thick. The thin-walled epidermal cells of roots give rise to root hairs.
- Hair- like outgrowths may also be found in the epidermis of leaves and stems. The epidermis has a cell membrane, nucleus, and cellulose.
Therefore, the correct answer is option D.
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