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For the following questions answer them individually
Which type of soil water is absorbed by root hairs of plants:
Hygroscopic water
Capillary water
Gravitational water
All of these
If a cell looses water when placed in a solution, the solution is:
Hypotonic
Saturated
Hypertonic
Weak
Which element induces disease tolerance in plants
N
S
Ca
K
Plants tolerant to high salinity conditions are called:
Halophytes
Hydrophytes
Helioplytes
Xerophytes
Rice inflorescence is known as:
Spike
Ear
Panicle
Floret
Pyrilla belongs to:
Pyralidae
Fulgoridae
Cicadellidae
Jassidae
Nitrogen is available for plants in the form of:
Nitrogen gas
Nitrogen dioxide
Nitrate
Nitric acid
Guard cells differ from epidermal cells in having:
Cell wall
Mitochondria
Chloroplost
Vacuoles
Plant hormone responsible for cell division is:
Auxin
Cytokinin
Gibberellin
Abscicic acid
Which is true for pteridophytes:
Secondary growth takes place
Heterospory occur in all cases
Gametophyte dominant phase
Phloem lacks companion cell
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