what do you call the substances produced in the plant body which are not required for growth of the plant? give two examples
Answers
Answer:
The required answer is shown below:
Explanation:
Plants, for the most part, keep growing throughout their lives. Plants, like other multicellular organisms, grow by a combination of cell division and growth. Cell division (mitosis) increases the number of cells, whereas cell growth increases cell size. Through cellular differentiation, plant cells become specialized into different cell types as they grow. Cells can no longer divide once they have differentiated.
The meristem is essential for plant cell growth and repair. Meristem is a type of plant tissue that is made up of undifferentiated cells that can divide and differentiate indefinitely.
Apical meristems are found at the apex, or tip, of roots and buds, and they allow roots and stems to grow longer and leaves and flowers to differentiate. The meristem adds tissue "behind" it, constantly propelling itself deeper into the ground (for roots) or into the air (for stems) (for stems). The apical meristem of a single branch will frequently become dominant, suppressing the growth of meristems on other branches and resulting in the formation of a single trunk.
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Answer:
Explanation:
Most plants keep growing throughout their whole lives. Plants develop by a mix of cell expansion and cell division, just as other multicellular creatures. While cell division (mitosis) increases the number of cells, cell expansion increases the size of the cell. Through cellular differentiation, plant cells specialise into several cell types as they develop. Cells can no longer divide after they have differentiated.
Meristem is essential for the maintenance and repair of plant cells. A form of plant tissue called a meristem is made up of undifferentiated cells that can keep dividing and differentiating.
The apex, or tip, of roots and buds contains apical meristems, which enable the lengthening of roots and stems as well as the differentiation of leaves and flowers. The meristem continually propels itself farther into the earth (for roots) or air (for stems), increasing the length of the roots and stems (for stems). The formation of a single trunk frequently results from the apical meristem of a single branch becoming dominant, inhibiting the growth of meristems on other branches.
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