(a) Give reason for the following: (i) The cells of meristematic tissue have dense cytoplasm, thin walls and prominent nuclei. (ii) Vacuoles are absent in the cells of this tissue. (b) Identify the type of meristem present in the following: (i) At the base of leaves. (ii) Girth of stem increase due to this. (iii) Increase the length of the stem. If you say anything that is not realeted to answer than i will report you
Answers
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⏩Meristematic cells have a prominent nucleus and a dense cytoplasm but lack a vacuole, this is so because meristematic cells have an ability to divide and form new cell. Vacuoles have a function of storing food and other nutrients that a cell might need to survive.
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⏩Meristematic cells divide frequently and give rise to new cells and hence they need dense cytoplasm and thin cell wall. Vacuoles causes hindrance in cell division as it is full of cell sap to provide turgidity and rigidity to the cell. ... Meristematic cells do not need to store these nutrients as they have compact shape.
•1) The base of leaves- It is the intercalary meristem which is also present at the twigs or the inter nodes. 2) Girth of stem is increased due to - lateral meristem, also known as cambium.
• 3) Increase in length of stem - apical meristem which is present at the growing tips of both stem and root to enable them to grow in size.
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⏩The apical meristem helps in increasing the length of the stem and root. Apical meristem is the answer.
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Answer:
Explanation:
Meristematic cells have a prominent nucleus and a dense cytoplasm but lack a vacuole, this is so because meristematic cells have an ability to divide and form new cell. Vacuoles have a function of storing food and other nutrients that a cell might need to survive.
___________________________
⏩Meristematic cells divide frequently and give rise to new cells and hence they need dense cytoplasm and thin cell wall. Vacuoles causes hindrance in cell division as it is full of cell sap to provide turgidity and rigidity to the cell. ... Meristematic cells do not need to store these nutrients as they have compact shape.
•1) The base of leaves- It is the intercalary meristem which is also present at the twigs or the inter nodes. 2) Girth of stem is increased due to - lateral meristem, also known as cambium.
• 3) Increase in length of stem - apical meristem which is present at the growing tips of both stem and root to enable them to grow in size.
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⏩The apical meristem helps in increasing the length of the stem and root. Apical meristem is the answer.