Study Guides/Biology/Where is Parenchyma Tissue Present?
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Name the Region Where Parenchyma Tissue is Present

Parenchyma is the most abundant and fundamental plant tissue. In Class 9 Biology (Plant Tissues), knowing exactly where it is located is a frequently examined question.

Question (Click to Flip)

What is the main function of parenchyma?

Answer

Parenchyma cells perform storage (food, water), photosynthesis (if they contain chloroplasts), and provide turgidity and support to soft plant parts.

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Key Facts

Parenchyma cells are living cells with thin cellulose cell walls. They are loosely packed with intercellular spaces, making them ideal for gas exchange and storage.

Regions Where Parenchyma is Present

Parenchyma is found almost everywhere in a plant:

  1. Cortex of Stem and Root: The middle region of stem and root cross-sections is made of parenchyma cells.
  2. Mesophyll of Leaves: The entire green spongy and palisade layers inside a leaf are parenchyma cells.
  3. Pith: The central region of dicot stems is made of parenchyma (pith).
  4. Fruit Pulp: The fleshy edible parts of fruits (like mango pulp, tomato flesh) are parenchyma cells filled with food/water.
  5. Seed Endosperm: Food-storing tissue in seeds.

Special Types of Parenchyma

  • Chlorenchyma: Parenchyma cells containing chloroplasts (found in mesophyll of green leaves โ€” perform photosynthesis).
  • Aerenchyma: Parenchyma with large air spaces (found in aquatic plants like lotus to help them float).

Questions and Answers

What is the main function of parenchyma?+

Parenchyma cells perform storage (food, water), photosynthesis (if they contain chloroplasts), and provide turgidity and support to soft plant parts.

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