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In…..female flowers remais submerged in ...

In…..female flowers remais submerged in water and the pollen grains are released inside the water
(A) vallisneria
(B) marine grasses
(C) hydrilla
(D) viola

A

vallisneria

B

marine grasses

C

hydrilla

D

viola

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The correct Answer is:
B
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Which of the following is not an example of water pollinated plant? (A) Zostera (B) Viola (C) Vallisneria (D) Hydrilla

Which of the following statement is true for vallisneria? (A) Male flower come to surface of water and release their pollen on water (B) The female flowers have waxy stigma, water around them become concave discs (C) The stalks becomes spirally coiled like a spring and fertilized flowers are withdrawn into water (D) All the above statement are true

In a flowering plant the pollen tube first arrives in (A) egg (B) antipodal cell (C) a synergid (D) central cell

How many male gametes are released by pollen tube near the egg cell in angiosperms ? (A) One (B) Two (C) Three (D) Four

Micropyle in seed helps the entry of (A) pollen tube (B) water (C) male gamete (D) female gamete

Name the pore found on the exine of the pollen grains (A) Micropores (B) Germpore (C) Micropyle (D) Lentical

Which option is correct for the given statmeent X, Y and Z ? X : Pollen grains are the carriers of male gametes. Y : Pollen grain are produced in stigma. Z : Pollen grain are transferred to anthers. (A) X is wrong, Y and Z are correct (B) X, Y and Z are correct (C) X and Y are correct and Z is wrong (D) X is correct, Y and Z are wrong.

Given below are a few statements related to external fertilization. Choose the correct statements. (i) The male and female gametes are formed and released simultaneously. (ii) Only a few gametes are released into the medium. (iii) Water is the medium in a majority of organisms exhibiting external fertilization. (iv) Offspring formed as a result of external fertilization have better chance of survival than those formed inside an organism. (A) iii and iv (B) i and iii (C) ii and iv (D) i and iv

In a pollen grain larger irregular shaped nucleus is (A) archesporical nucleus (B) vegetative cell (C) prothallial nucleus (D) generative cell

KUMAR PRAKASHAN-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Section -F (Multiple Choice Questions)
  1. Which of the following is not an example of water pollinated plant? (...

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  2. Which of the following statement is true for vallisneria? (A) Male fl...

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  3. In…..female flowers remais submerged in water and the pollen grains ar...

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  4. Which of the following birds helps in pollination? (A) Sun birds (B...

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  5. Entomophily is pollination by….. (A) reptiles (B) insects (C) rod...

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  6. To prevent inbreeding self-incompatibility is found in

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

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

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

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

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

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

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

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

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

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

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

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

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  19. What is produced by male gametophyte in angiosperms?

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

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