MCQ
Fibrous root system is better adopted than tap root system for:
- ✓Anchorage of plant to soil.
- BStorage of food.
- CAbsorption of water and mineral.
- DTransport of organic matter.
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$I.$ Fresh weight. $II.$ Dry weight
$III.$ Length, area and volume $IV.$ Cell number
Choose the correct option.
$(i)$ All the cells of the epithelium are held together with little intercellular materials.
$(ii)$ In almost all animal tissues specialized junction provide both structural and functional link between its individual cells.
$(iii)$ Tight junctions help to stop substances from leaking across a tissue.
$(iv)$ Adhering junctions provide cementing to keep neighbouring cells together.
$(v)$ Gap junctions provide cytoplasmic channels between cells for passage of ions, small molecules and sometimes big molecules.