MCQ
The heartwood cannot conduct water because of
- APeripheral location in the stems
- BSuberized cell walls
- CCentral location in the stems
- ✓Deposition of organic compounds

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$(i)$ Cilium / Flagellum contains an outer ring of nine doublet microtubules surrounding two singlet microtubules.
$(ii)$ Cilia are smaller which work like oars, causing the movement of either the cells or surrounding fluid.
$(iii)$ Flagella are comparatively longer and responsible for cell movement.
$(iv)$ Cilium and flagellum are covered with plasma membrane. Which of the above statements are correct?

$R$ : There always occurs two types of florets in a head.