Question

What are the function of meristematic tissue ?

Answer 1

help in plant growth length and breath by cell division and present at tips of root and shoot

Answer 2

Meristematic tissues are formed of young, compactly arranged undiffer-entiated living cells that keep dividing and add new cells throughout the life of a plant.

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${\bold { \underline{\small{DISTRIBUTION- }}}}$

$\bf\sf It\: is \:found\: in\: the\: growing\: regions,\:such\: as-$

$\:\:\:\:\:\:\:\:\:\:\:\:\sf \bullet\: The\: tips\: of \:root$

$\:\:\:\:\:\:\:\:\:\:\:\:\sf \bullet\: Stems$

$\:\:\:\:\:\:\:\:\:\:\:\:\sf \bullet\: Shoot\:and\:branches$

$\:\:\:\:\:\:\:\:\:\:\:\:\sf \bullet\: between\: the\: bark\: and\: wood\: of \:trees.$

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${\bold { \:\:\:\:\:\: \underline{\normalsize{Characteristics \:of\: Meristematic }}}}$${\bold { \:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\: \underline{\normalsize{\:Tissues -}}}}$

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• $\small\pink{ \large\star}$The meristematic cells are small, undifferentiated and thin-walled.

• $\small\purple{ \large\star}$These are compactly arranged, without intercellular spaces.

• $\small\red{ \large\star}$The cells may be spherical, oval, polygonal or rectangular with thin cell wall made of cellulose.

• $\small\orange{ \large\star}$Cytoplasm is dense, vacuoles are small or absent.

• $\small\gray{ \large\star}$Nucleus is prominent and centrally located.

• $\small\blue{ \large\star}$Rate of metabolism is high

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${\bold { \:\:\:\:\:\:\:\underline{\normalsize{Types \:of\: Meristematic \:Tissues }}}}$

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$\underline{\underline{\maltese\:\: \textbf{\textsf{Apical\: Meristem}}}}$

• It is found at the growing tips of stem, roots and growing young leaves.

• It is also called Primary Meristem.

• It is responsible for growth and elongation of roots and stem.

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$\underline{\underline{\maltese\:\: \textbf{\textsf{Intercalary\: Meristem}}}}$

• The tissue present at the base of leaves, near twigs or near the nodes and internodes of plant.

• It increases the length of organs and branches and is responsible for bending moment of twigs.

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$\underline{\underline{\maltese\:\: \textbf{\textsf{Lateral\: Meristem}}}}$

• It is found as cambium in the vascular bundles of dicot stem and roots and as cork cambium beneath the bark.

• It is also called Secondary Meristem.

• It helps in increasing the diameter and girth of plants.