The Fundamental Unit of Life — Science STD 9 — Question
Gujarat BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life1 Mark
MCQ
Which of the following is not present in onion cell?
A
Nucleus.
✓
Chloroplast.
C
Cytoplasm.
D
Cell wall.
✓
Answer
Correct option: B.
Chloroplast.
The clear epidermal cells exist in a single layer and do not contain chloroplasts, because the onion fruiting body $($bulb$)$ is used for storing energy, not photosynthesis. Each cell has a cell wall, cell membrane, cytoplasm, nucleus and a large vacuole. The nucleus is present at the periphery of the cytoplasm. The vacuole is prominent and present at the centre of the cell, surrounded by cytoplasm.
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