Question

(a) What do you mean by a meristematic tissue?
(b) Mention different types of meristematic tissues present in plants. Draw a diagram showing
the three types of meristematic tissues.

Answer 1

meristamic tissues are tissues that can divide among themselves.

types :
1.apical meristem : tip of stems. increases length of plant.
2.intercalary meristem: at base of leaves.
3.lateral meristem : at at stem or root. increases width of plants.

Answer 2

a) The meristematic tissue is an area of active plant growth. Undifferentiated cells divide and form new, specialized cells. Meristematic tissue may be the cambium layer, leaf or flower buds, shoot tips, or root tips.

B) the three types of meristematic tissue are:-

1) Apical meristems

These are located at opposite ends of the plant axis in the tips of roots and shoots. Cell divisions and subsequent cellular enlargement in these areas lengthen the above and below ground parts of the plant. The meristems also influence the shapes of the mature plants since the patterns for subsequent growth are laid down in the meristems.

2) Lateral meristems

Vascular cambium. Some plants grow in diameter by producing new tissues laterally from a cylinder of tissue called the vascular cambium, which extends throughout the length of the plant from the tips of the shoots to the tips of the roots. It is present in allperennial and in some annual plants. Tissues produced by cell divisions of the vascular cambium are secondary tissues.


3)intercalary meristems is present in internodes, or stem regions between the places at which leaves attach, and leafbases, especially of certain 



diagram Is GiVeN BeLoW.....