The viability of seeds is tested by
Options
(a) Safranine (b) 2, 6 dichlorophenol indophenols (c) 2, 3, 5 triphenyl tetrazolium chloride (d) DMSO
Correct Answer:
2, 3, 5 triphenyl tetrazolium chloride
Explanation: […]
Placentation in tomato and lemon is
Options
(a) Parietal (b) Free central (c) Marginal (d) Axile
Correct Answer:
Axile
Explanation:
Parietal Ex. – Mustard Free central Ex. – Primula & Dianthus Marginal Ex. […]
Infectious proteins are present in:
Options
(a) Gemini viruses (b) Prions (c) Viroids (d) Satellite viruses
Correct Answer:
Prions
Explanation:
Infections proteins are rich in prions. Prions are made of proteins without nucleic […]
Down’s syndrome in humans is due to
Options
(a) Two ‘Y’ chromosomes (b) Three ‘X’ chromosomes (c) Three copies of chromosomes 21 (d) Monosomy
Correct Answer:
Three copies of chromosomes 21
Explanation:
Down’s […]
Age of a tree can be estimated by :
Options
(a) biomass (b) number of annual rings (c) diameter of its heartwood (d) its height and girth
Correct Answer:
number of annual rings
Seed coat is not thin, mebranous in:
Options
(a) Coconut (b) Groundnut (c) Gram (d) maize
Correct Answer:
Coconut
Explanation:
The seed coat develops from integuments originally surrounding the ovule. It is thick […]
Perisperm differs from endosperm in:
Options
(a) having no reserve food (b) being a diploid tissue (c) its formatting by fusion of secondary nucleus with several spersms (d) being a haploid tissue
Correct […]
In barley stem vascular bundles are:
Options
(a) closed and scattered (b) open and in a ring (c) closed and radial (d) open and scattered
Correct Answer:
closed and scattered
Explanation:
In barley […]
Cymose inflorescence is present in :
Options
(a) Solanum (b) Sesbania (c) Trifolium (d) Brassica
Correct Answer:
Solanum
Explanation:
Cymose infloresence in present in Solanum. Cymose inflorescence is the name of determinate or […]
An example of axile placentation is:
Options
(a) Dianthus (b) Lemon (c) Marigold (d) Argemone
Correct Answer:
Lemon
Explanation:
An example of axile placentation is Lemon (citrus lemon)L. belongs to family Rutaceae, it contains […]
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