G.K. Practice Test: Question Set - 10
1. Pollination is best defined as
- (A) Transfer
of pollen from anther to stigma
- (B) Germination
of pollen grains
- (C) Growth
of pollen tube in ovule
- (D) Visiting
flowers by insects
2. Plants absorb most part of water needed by them through their
- (A) Embryonic
zone
- (B) Growing
point
- (C) Root hairs
- (D) Zone
of elongation
3. Primary phloem develops from
- (A) Lateral
meristem
- (B) Protoderm
- (C) Extrastelar
cambium
- (D) Provascular
tissue
4. Phloem is a tissue found in
- (A) Reproductive
organs of animals
- (B) Plants
- (C) Insects
- (D) Mammals
5. Plants growing on sand are called as
- (A) Chasmophytes
- (B) Oxylophytes
- (C) Lithophytes
- (D) Psammophytes
6. Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
- (A) Exact
concentration of solution is not given
- (B) Character
of semi permeable membrane is not given
- (C) The
flow of solution is not possible through semi permeable membrane
- (D) All
are incorrect
7. Organic Substances which, in very small amounts, control growth and development called
- (A) Vitamins
- (B) Hormones
- (C) Enzymes
- (D) None of the
above
8. Rain water helps to increase the _________ to some extent.
- (A) Phosphorous
contents
- (B) Nitrogen
contents
- (C) Calcium
contents
- (D) Potash
contents
9. Ptyalin is an enzyme produced in the
- (A) Salivary
glands
- (B) Pituitary
glands
- (C) Thyroid
glands
- (D) Pancreas
10. Radical vascular bundles are those in which
- (A) Xylem
is surrounded by phloem
- (B) Phloem
is surrounded by xylem
- (C) Xylem
and phloem occur on the same radius
- (D) Xylem
and phloem occur on the different radii
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