Question

What are plastids? Explain the structure of chloroplast with the help of a well labelled diagram.

Answer 1

Answer:

plastids are the cell organelles which helps in the preparation for food on plant cell

Answer 2

Required Answer:

⟶ Plastids are the cell organelles present only in plant cells. They contain pigments.

Chloroplast

• It contains chlorophyll and carotenoid pigments. These pigments are responsible for trapping light energy which is necessary for photosynthesis.
• In mesophyll cells of the leaves in green plants, the majority of chloroplasts are found.

Shape - oval, lens-shaped, spherical, discoid.

• They are double membrane-bound. And the inner membrane is less permeable.
• Storma - The space limited by the inner membrane of the chloroplast.
• Thylakoid - Many numbers of organised flattened membranous sacs.
• Thylakoids are arranged in stacks like piles of coins called grana (Singular is granum).
• Stoma Lamella - Flat membranous tubules that connect thylakoids.

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