Question

please help me. I will mark you brainlist. ​

Answer 1

Answer:

i - A primary meristem is a type of meristematic tissue that is responsible for the primary growth. Primary growth is a growth in length. It is responsible for the increase in the height of a plant as opposed to the increase in diameter, which is the role of secondary growth.

ii - lateral meristem

iii - Meristematic tissue has a number of defining features, including small cells, thin cell walls, large cell nuclei, absent or small vacuoles, and no intercellular spaces. The apical meristem (the growing tip) functions to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.

Answer 2

Answer:

i) Meristematic tissues are responsible for plant growth. They are present at the tips of roots,stem and branches. The cells present in these tissues constantly divide to produce new cells. This leads to an increase in the height and girth of plants.

ii)Lateral meristems

Lateral meristems are known as secondary meristems because they are responsible for secondary growth, or increase in stem girth and thickness. Meristems form anew from other cells in injured tissues and are responsible for wound healing.

iii)Features of meristematic tissues:

(1) Cells divide repeatedly.

(2) Cell walls are thin.

(3) Vacuoles are not found.

(4) Metabolically very active.

(5) They have dense cytoplasm.

(6) They have prominent nucleus.

HOPE IT HELPS YOU ☺️

THANKYOU