Question

Q 19(1+1+1+1+1) Answer any four sub-parts in these questions.

i) Under the high power objective of microscope, an epidermal peel of a leaf shows :

a) Stomata surrounded by many guard cells.
b) Stomata surrounded by a pair of guard cells each.
c) Stomata surrounded by several epidermal cells.
d) Stomata surrounded by several guard cells each.

ii) The shape of guard cell in common is:

a) Heart shaped
b) Liver shaped
c) Kidney shaped
d) Stomach shaped

iii) To test the release of carbon dioxide gas during respiration the chemical used is

a) Lime
b) Lime water
c) Calcium carbonate
d) Marble

iv) In the experiment demonstrating respiration in germinating seeds, KOH is used to

a) Absorb carbon dioxide produced by the seeds
b) Absorb oxygen present in the flask
c) Absorb water vapours released by the seeds.
d) Liberate oxygen to be used by the seeds

v) Seeds that are taken in the flask during respiration experiment must be

a) Just wet
b) Boiled
c) Dry
d) Germinating

Answer 1

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