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Plant Tissues Video Lecture | Science Class 9
FAQs on Plant Tissues Video Lecture - Science Class 9
| 1. What are plant tissues? |  |
Ans. Plant tissues are groups of cells that work together to perform specific functions in a plant's body. They are classified into two main types: meristematic tissues, which are responsible for growth and cell division, and permanent tissues, which are responsible for various functions like support, transportation, and storage.
| 2. What are the different types of plant tissues? | |
Ans. There are four main types of plant tissues:
1. Meristematic tissues: These are responsible for growth and cell division in plants.
2. Parenchyma tissues: They are involved in photosynthesis, storage, and secretion.
3. Collenchyma tissues: These provide mechanical support to young and growing plant parts.
4. Sclerenchyma tissues: They provide mechanical support and protection to mature plant parts.
| 3. How does meristematic tissue contribute to plant growth? | |
Ans. Meristematic tissues are responsible for the growth and development of plants. They consist of undifferentiated cells that continuously divide and produce new cells. These new cells then differentiate into various types of permanent tissues, which contribute to the growth of the plant in terms of height, girth, and the formation of new organs.
| 4. What is the role of sclerenchyma tissue in plant bodies? | |
Ans. Sclerenchyma tissues provide mechanical support and protection to mature plant parts. They have thick cell walls containing a substance called lignin, which makes them hard and rigid. These tissues are found in the stem, roots, and leaves of plants and help in providing structural support to the plant, especially in regions where flexibility is not required.
| 5. How do parenchyma tissues contribute to plant functions? | |
Ans. Parenchyma tissues perform various functions in plants. They are involved in photosynthesis, as they contain chloroplasts and can carry out the process of converting sunlight into energy. Parenchyma tissues also store nutrients and water, provide support to the plant, and can even secrete substances like nectar or resin.
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