The body calcium level is lowered by the deficiency of
Options
(a) parathormone (b) thyroxine (c) both calcitonin and parathormone (d) calcitonin
Correct Answer:
parathormone
Explanation:
A peptide hormone secreted by the parathyroid gland […]
Which one of the following is resistant to enzyme action?
Options
(a) Cork (b) Wood fibre (c) Pollen exine (d) Leaf cuticle
Correct Answer:
Pollen exine
Explanation:
Pollen exine is resistant to enzyme […]
Endosperm is consumed by developing embryo in the seed of
Options
(a) coconut (b) castor (c) pea (d) maize
Correct Answer:
pea
Explanation:
In pea, endosperm is consumed by developing embryo in the […]
Which extra-embryonic membrane in human prevents desiccation of the embryo inside the uterus?
Options
(a) Chorion (b) Allantois (c) Yolk sac (d) Amnion
Correct Answer:
Amnion
Explanation:
Amnion is an extraembryonic membrane in […]
The fleshy receptacle of syconus of fig encloses a number of:
Options
(a) Achenes (b) Samaras (c) Berries (d) Mericarps
Correct Answer:
Achenes
Explanation:
The fleshy receptacle of syconus of fig encloses a […]
Thorn of Bougainvillea and tendril of cucurbita are example of
Options
(a) analogous organ (b) homologous organs (c) vestigial organs (d) retrogressive evolution
Correct Answer:
homologous organs
Explanation:
No explanation available. Be the […]
Nitrogen fixation in root nodules of Alnus is brought about by:
Options
(a) Bradyrhizobium (b) Clostridium (c) Frankia (d) Azorhizobium
Correct Answer:
Frankia
Explanation:
The most common symbiotic association of legume and bacteria […]
In germinating seeds fatty acids are degraded exclusively in the
Options
(a) proplastids (b) glyoxysomes (c) peroxisomes (d) mitochondria
Correct Answer:
glyoxysomes
Explanation:
In germinating seeds, fatty acids are degraded exclusively in the glyoxysomes. […]
Importance of day length in flowering of plants was first shown in
Options
(a) lemna (b) tobacco (c) cotton (d) petunia
Correct Answer:
tobacco
Explanation:
Photoperiodism was first studies by Garner and Allard (1920). […]
The two sub-units of ribosome remain united a critical ion level of
Options
(a) copper (b) manganese (c) magnesium (d) calcium
Correct Answer:
magnesium
Explanation:
The two subunits of ribosome remain united at a […]
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