Multiple choice

Which type of plastids have numerous internal membranes?

  1. Storage plastids

  2. Photosynthetic plastids

  3. Gereontoplast plastids

  4. Gravity detectors
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plastids, responsible for photosynthesis, possess numerous internal membrane layers called thylakoids. These are the sites of light absorption and ATP synthesis, and contain many proteins, including those involved in the electron transport chain. Photosynthetic pigments such as chlorophylls a, b and c, and some others like xanthophylls, carotenoids and phycobilins are also embedded within this membrane, thus plastids are responsible for photosynthesis containing numerous internal membranes.

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