During mitosis ER and nucleolus begin to disappear at:
Options
(a) late prophase (b) early metaphase (c) late metaphase (d) early prophase
Correct Answer:
early prophase
Explanation:
During mitosis. endoplasmic reticulum and nucleus begins […]
Best defined function of Manganese is green plants is:
Options
(a) photolysis of water (b) Calvin cycle (c) Nitrogen fixation (d) Water absorption
Correct Answer:
photolysis of water
Explanation:
The best defined function […]
The essential chemical components of many coenzymes are:
Options
(a) Nucleic acids (b) Carbohydrates (c) Vitamins (d) Proteins
Correct Answer:
Vitamins
Explanation:
The essential chemical components of many enzymes are vitamins, e.g., coenzyme nicotinamide […]
Inheritances of skin colour in humans is an example of
Options
(a) point mutation (b) polygenic inheritance (c) codominance (d) chromosomal aberration
Correct Answer:
polygenic inheritance
Explanation:
Inheritance of skin colour in human […]
Cyclic photophosphorylation results in the formation of
Options
(a) ATP and NADPH (b) ATP, NADPH and O₂ (c) ATP (d) NADPH
Correct Answer:
ATP
Explanation:
Cyclic photophosphorylation results in the formation of ATP. This […]
The gynoecium consists of many free pistils in flowers of
Options
(a) Aloe (b) Tomato (c) Papaver (d) Michelia
Correct Answer:
Michelia
Explanation:
No explanation available. Be the first to write the explanation […]
In which one of the following pollination is autogamous?
Options
(a) Geitonogamy (b) Xenogamy (c) Chasmogamy (d) Cleistogamy
Correct Answer:
Cleistogamy
Explanation:
Cleistogamy is autogamous pollinatin. When pollination and fertilization occur in unopened […]
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 […]
Male gametes in angiosperms are formed by the division of
Options
(a) generative cell (b) vegetative cell (c) microspore mother cell (d) microspore
Correct Answer:
generative cell
Explanation:
Generative cell which is a […]
Which one is the most abundant protein in the animal world
Options
(a) Trypsin (b) Haemoglobin (c) Collagen (d) Insulin
Correct Answer:
Collagen
Explanation:
Collagen is the most abundant protein of animal world. Rubisco […]
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