In land plants, the guard cells differ from other epidermal cells in having :
Options
(a) cytoskeleton (b) mitochondria (c) endoplasmic reticulum (d) chloroplasts
Correct Answer:
chloroplasts
Explanation:
Guard cells differ from epidermal […]
About which day in a normal humans menstrual cycle does rapid secretion of LH (Popularly called LH-surge) normally occurs?
Options
(a) 14th day (b) 20th day (c) 5th day (d) 11th day
Correct […]
Which part of human brain is concerned with the regulation of body temperature?
Options
(a) Cerebellum (b) Cerebrum (c) Hypothalamus (d) Medulla Oblongata
Correct Answer:
Hypothalamus
Explanation:
Hypothalamus part of human brain is concerned […]
Which one of the following pairs of organs includes only the endocrine glands?
Options
(a) Parathyroid and Adrenal (b) Pancreas and Parathyroid (c) Thymus and Testes (d) Adrenal and Ovary
Correct Answer:
Parathyroid and […]
Which one of the following is the most widely accepted method of contraception in India, as at present?
Options
(a) Cervical caps (b) Tubectomy (c) Diaphragms (d) IUDs. (Intra uterine devices)
Correct Answer: […]
The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of:
Options
(a) vitamin B₁ (b) vitamin C (c) vitamin D (d) vitamin A
Select the option which shows correct matching of animal with excretory organs and excretory product
Options
(a) Housefly Renal tubules Uric acid (b) Labeo (Rohu) Nephridial tubes Ammonia (c) Salamander Kidney Urea (d) […]
Removal of introns and joining the exons in a defined order in a transcription unit is called:
Options
(a) tailing (b) transformation (c) capping (d) splicing
Correct Answer:
splicing
Explanation:
Splicing is the removal […]
In which one of the following, male and female gametophytes do not have free living independent existence for?
Options
(a) Pteris (b) Funaria (c) Polytrichum (d) Cedrus
Correct Answer:
Cedrus
Explanation:
Male and female gametophytes of […]
A trangenic food crop which may help in solving the problem of night blindness in developing countries is
Options
(a) Flavr Savr tomatoes (b) Starlink maize (c) Bt Soybean (d) Golden rice
Correct […]
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