Study Guides/Biology/Where is Apical Meristem Found
Study Guide · Biology

Where is Apical Meristem Found? (Plant Tissues)

In Class 9 Biology (Plant Tissues), we learn that plants grow throughout their lives — unlike most animals. This continuous growth is possible because of special dividing cells called Meristematic Tissue. The most important type is the Apical Meristem.

Question (Click to Flip)

Why can't animals regenerate limbs but plants keep growing?

Answer

Animals have mostly permanent tissues after development — cells stop dividing. Plants retain meristematic tissue throughout their life, allowing continuous cell division and new organ formation.

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Key Facts

The root cap protects the delicate apical meristem of the root as it pushes through hard, rough soil. Root cap cells are constantly worn away and replaced by new cells from the meristem behind it.

Location of Apical Meristem

As the name suggests ('Apex' means tip/top):

Apical Meristem is found at the TIPS of roots and shoots (stems).

Specifically:

  • At the root apex (very tip of every root) → causes roots to grow deeper into the soil
  • At the shoot apex (bud at the very tip of every stem/branch) → causes the plant to grow taller

What does it do?

Apical meristem cells are actively dividing, undifferentiated cells. They continuously divide by mitosis to produce new cells:

  • New cells at the root tip → root grows longer (primary root growth)
  • New cells at the shoot tip → stem grows taller and new leaves/buds appear

This is called Primary Growth — increasing the length of the plant.

Three Types of Meristem

Based on location in the plant body:

  1. Apical Meristem: At root and shoot tips (length increase)
  2. Lateral Meristem: On the sides of stems/roots (width/girth increase — makes trees thicker)
  3. Intercalary Meristem: At the base of leaves and internodes (found in grasses — allows regrowth after being mowed!)

Questions and Answers

Why can't animals regenerate limbs but plants keep growing?+

Animals have mostly **permanent tissues** after development — cells stop dividing. Plants retain **meristematic tissue** throughout their life, allowing continuous cell division and new organ formation.

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