Minerals known to be required in large amounts for plant growth include:
Options
(a) calcium, magnesium, manganese, copper (b) potassium, phosphorus, selenium, boron (c) magnesium, sulphur, iron, zinc (d) phosphorus, potassium, sulphur, calcium
Which one of the following statements is incorrect?
Options
(a) In competitive inhibition, the inhibitor molecule is not chemically changed by the enzyme (b) The competitive inhibitor does not affect the rate of […]
Transpiration and root pressure cause water torise in plants by :
Options
(a) Pulling and pushing it, respectively (b) Pushing it upward (c) Pushing and pulling it, respectively (d) Pushing it upward
Correct Answer: […]
Transmission tissue is characteristic feature of:
Options
(a) Solid style (b) Dry stigma (c) Wet stigma (d) Hollow style
Correct Answer:
Solid style
Explanation:
A solid style has transmission tissue which has large intercellular […]
Leaves become modified into spines in :-
Options
(a) Pea (b) Onion (c) Silk Cotton (d) Opuntia
Correct Answer:
Opuntia
Explanation:
In Opuntia, leaves become modified into spines to avoid transpiration so as to […]
In ginger vegetative propagation occurs through:
Options
(a) Offsets (b) Bulbils (c) Runners (d) Rhizome
Correct Answer:
Rhizome
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
In a ring girdled plant:
Options
(a) The root dies first (b) The shoot and root die together (c) Neither root nor shoot will die (d) The shoot dies first
Correct Answer:
The […]
The guts of cow and buffalo possess:
Options
(a) Chlorella spp (b) Methanogens (c) Cyanobacteria (d) Fucus spp
Correct Answer:
Methanogens
Explanation:
Methane is produced in the rumen and hindgut of animals by a […]
The chitinous exoskeleton of arthropods is formed by the polymerisation of:
Options
(a) D-glucosamine (b) N-acetylglucosamine (c) lipoglycans (d) Keratin sulphate and chondroitin sulphate
Correct Answer:
N-acetylglucosamine
Explanation:
No explanation available. Be the […]
Which one of the following statements is not true?
Options
(a) Pollen grains of some plants cause severe allergies and bronchial afflictions in some people (b) The flowers pollinated by flies and bats […]
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