Why meristematic cells have dense cytoplasm with almost no vacuole?
a) Meristematic tissue cells are continuously dividing and they have a prominent nucleus and a dese cytoplasm. Since they are diving rigorously they need not store food or waste products hence they lack vacuoles.
Why do meristematic tissues have a dense cytoplasm?
Meristematic cells have dense cytoplasm and prominent nuclei because they are actively dividing cells ,so they require cytoplasm and nucleus to control their activities. Vacuole has the function of storing food ,but in meristematic tissue ,cells keep on dividing and their is no need of storing anything.
Why do meristematic tissues not have vacuoles?
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.
Can we think why they would lack vacuoles Class 9?
Vacuoles are full of cell sap and provide turgidity and rigidity to the cell. Presence of vacuoles may cause hindrance in cell division. Thus meristematics cells lack vacuoles.
Does meristematic tissues have vacuoles?
Meristematic cells have a prominent nucleus and dense cytoplasm but they lack vacuole.
Why do meristematic tissues lack vacuoles Meritnation?
Meristematic tissues are the type of tissue present in plants that divides continuously. To make the cell division easy the cells of meristematic tissues are small, very thin walled, and without any vacuoles. … As the cells of meristematic tissues are dividing fast there is nothing to store.
Why meristematic tissue have a prominent nucleus and dense cytoplasm?
Meristematic cells have a prominent nucleus, dense cytoplasm and lack vacuoles and are because: … As vacuoles possess cell sap and provide rigidity and turgidity to the cell. This might pose a problem for cell division. Due to this reason, meristematic cells lack vacuole.
Does meristematic tissues lack vacuoles in its early stage?
Meristematic tissue lacks vacuole in its early stage. So, the correct answer is “Option C”. The apical meristem is responsible for the extension of the roots and shoots.
Why do meristematic cells have a large nucleus and dense cytoplasm?
Meristematic cells are continuously dividing cells so they have a prominent nucleus and dense cytoplasm. But since these cells do not store food or waste material, they lack vacuole.
Which type of tissue have dense cytoplasm thin cellulose walls prominent nuclei and lack vacuoles?
Cells of meristematic tissue are very active,they have dense cytoplasm, thin cellulose walls and prominent nuclei. They lack vacuoles.
What cells lack vacuoles and intercellular spaces?
The meristematic tissue in plants lack vacuole and intercellular space.
What is the meaning of dense cytoplasm?
The fluid (gel) like substance inside the cell in which organelles are present is called the cytoplasm. When the contents of cytoplasm are closely compacted together, it is termed as dense cytoplasm.
Why do meristematic tissues have thin cell walls?
As the meristmatic tissue divides repeatedly they need more organelles to share them with daughter cells . They have thin wall as wall breaks repeatedly for cell division . Nuclei are large so that when it will divide then it can be in sufficient amount in all offsprings.
Which cells of plants contain few vacuoles or not vacuoles at all?
Answer: In plant cells, central vacuole is larger than all of the other organelles, which makes up to 90% of cell. In animal cells, small vacuoles are present.
What happens if vacuoles are absent in leaf cells?
If a cell did not have a vacuole, then it would be unable to carry out its usual functions and would eventually die. In plants, the vacuole plays an important role in water storage and the maintenance of structure.
Which of the following tissues lack vacuoles?
Apical meristem and intercalary meristem tissue lack vacuoles.
Does meristematic tissues have thin cell wall?
Cell wall of meristematic tissue is thick.