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Apomixis in plant means development of a...

Apomixis in plant means development of a plant
(A) from root cutting
(B) without fusion of gametes
(C) from fusion of gametes
(D) from steam cutting

A

from root cutting

B

without fusion of gametes

C

from fusion of gametes

D

from steam cutting

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The correct Answer is:
B
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Explain why : (a) Two bodies at different temperatures T_1 and T_2 if brought in thermal contact do not necessarily settle to the mean temperature (T_1 + T_2 )//2 . (b) The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific heat. (c) Air pressure in a car tyre increases during driving. (d)The climate of a harbour town is more temperate than that of a town in a desert at the same latitude.

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Which of the following is true for asexual reproduction ? (A) Single parent participate in reproduction. (B) Two parent participate in reproduction. (C) Involve fusion of gametes. (D) Both (A) and (B)

What is the function of tapetum in a developing anther? (A) To draw food materials from the microspores (B) To digest the sporocytes (C) To supply food materials to the developing microsporocytes (D) To give protection to the inner tissue

Identify the incorrect statement. (A) In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent. (B) Zoospores are sexual reproductive structures. (C) In asexual reproduction, a single parent produces offspring with or without the formation of gametes. (D) Conidia are asexual structures in Penicillium.

Plants identical to mother plant can be obtained through. (A) Seed (B) Stem cutting (C) Both (A) and (B) (D) None of these

KUMAR PRAKASHAN-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Section -F (Multiple Choice Questions)
  1. To prevent inbreeding self-incompatibility is found in

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  2. Dioecious plant which prevents both autogamy and geitonogamy (A) Cast...

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  3. Apomixis in plant means development of a plant (A) from root cutting ...

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  4. Development of sporophyte without gametic fusion is known as (A) apom...

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  5. What is parthenogenesis? (A) Development of fruit without hormones ...

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  6. Pollination is best defined as (A) The transference of pollens from a...

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  7. A microspore mother cell forms (A) embryo sac (B) pollen Grains (...

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  8. One of the most resistant biological material known is (A) sporopolle...

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  9. How many pollen mother cells will produce 1000 pollen grains? (A) 100...

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  10. In angiosperms how many microspore mother cells are required to produc...

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  11. The formation of 256 pollen grains is done by how many meiotic divisio...

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  12. When a microspore mother cell with 40 chromosomes undergoes meiosis ea...

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  13. The odd one is (A) micropyle (B) nucellus (C) embryo sac (D) Po...

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  14. What is produced by male gametophyte in angiosperms?

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  15. The pollen grain is related to the embryo sac as (A) male gametophyt...

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  16. Commonly is a mature fertillised ovule n, 2n and 3n condition is respe...

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  17. The endosperm of angiosperms is developed from (A) antipodals (B) z...

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  18. If an endosperm of an angiosperm has 24 chromosomes what would be the ...

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  19. What is endosperm? Describe types of endosperm

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  20. Milky water of green coconut is (A) liquid of female gametophyte (B...

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