Chirkut.বাংলা

MCQ practice · SSC Biology Board questions · Chapter 2: Cells and Tissues of Organisms

Cumilla Board 2021

In that root there may be:

  1. i. leucoplast
  2. ii. carotene
  3. iii. chlorophyll

Think it through first, then pick an option.

  1. a i and ii
  2. b i and iii
  3. c ii and iii
  4. d i, ii and iii
Answer and explanation

Correct answer: b i and iii

i and iii are true: the root first has leucoplasts, and in light they turn into chloroplasts that bring chlorophyll.

Why the other options are wrong

  • a i and ii: ii is wrong: carotene is a chromoplast pigment and does not belong to this root.
  • c ii and iii: ii is wrong, so this pair is not right. The right answer here is: i and iii.
  • d i, ii and iii: ii is wrong, so all three cannot be true together.