The kind of epithelium which forms the inner walls of blood vessels is:
Options
(a) cuboidal epithelium (b) columnar epithelium (c) ciliated columnar epithelium (d) squamous epithelium
Correct Answer:
squamous epithelium
Explanation:
Squamous […]
Cu ions released from copper – releasing Intra Uterine Devices (IUDs) :
Options
(a) make uterus unsuitable for implantation (b) increase phagocytosis of sperms (c) suppress sperm motility (d) prevent ovulation
Correct Answer: […]
Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called
Options
(a) Xenogamy (b) Geitonogamy (c) Karyogamy (d) Autogamy
Correct Answer:
Geitonogamy
Explanation:
Geitonogamy […]
In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube?
Options
(a) Embryo only, upto 8 cell stage (b) Either zygote or early embryo […]
Toxic agents present in food which interfere with thyroxine synthesis lead to the development of:
Options
(a) toxic goitre (b) cretinism (c) simple goitre (d) thyrotoxicosis
Correct Answer:
simple goitre
Explanation:
Goitre is […]
PGA as the first CO₂ fixation product was discovered in photosynthesis of:
Options
(a) Bryophyte (b) Gymnosperm (c) Angiosperm (d) Alga
Correct Answer:
Alga
Explanation:
Phosphoglyceric and (PGA) is the first stable product of […]
The one aspect which is not a salient feature of genetic code, is its being:
Options
(a) degenerate (b) ambiguous (c) universal (d) specific
Correct Answer:
ambiguous
Explanation:
Genetic code is non […]
The nerve centres which control the body temperature and the urge for eating are contained in:
Options
(a) hypothalamus (b) pons (c) cerebellum (d) thalamus
Correct Answer:
hypothalamus
Explanation:
Hypothalamus contains important nerve centres […]
The scutellum obsorved in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons?
Options
(a) Cotyledon (b) Endosperm (c) Aleurone layer (d) Plumule
Correct Answer: […]
Breeding of crops with high levels of minerals, vitamins and proteins is called
Options
(a) Somatic hybridisation (b) Biofortification (c) Biomagnification (d) Micropropagation
Correct Answer:
Biofortification
Explanation:
Breeding of crops with high levels of […]
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