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Sexual Reproduction in Flowering Plants · Question 34

NEET (UG) 2019MCQEasy📈 Topic in 50% papers+4−1
1

Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?

  1. Central cell develops into endosperm
  2. Ovules develop into embryo sac
  3. Ovary develops into fruit
  4. Zygote develops into embryo

Answer

(2) Ovules develop into embryo sac

Solution

As per NCERT, after double fertilisation:

⇒ the central cell (primary endosperm cell) develops into the endosperm,

⇒ the zygote develops into the embryo,

⇒ the ovules mature into seeds and the ovary develops into a fruit.

∵ The embryo sac is formed inside the ovule before fertilisation (megasporogenesis),

∴ 'ovules develop into embryo sac' is incorrect.

Answer: (2)

NEET (UG) 2019

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2

Persistent nucellus in the seed is known as

  1. Hilum
  2. Tegmen
  3. Chalaza
  4. Perisperm
NEET (UG) 2019
3

What is the fate of the male gametes discharged in the synergid?

  1. One fuses with the egg, other(s) fuse(s) with synergid nucleus.
  2. One fuses with the egg and other fuses with central cell nuclei.
  3. One fuses with the egg, other(s) degenerate(s) in the synergid.
  4. All fuse with the egg.
NEET (UG) 2019
4

Which of the following has proved helpful in preserving pollen as fossils?

  1. Pollenkitt
  2. Cellulosic intine
  3. Oil content
  4. Sporopollenin
NEET 2018
5

Winged pollen grains are present in

  1. Mustard
  2. Cycas
  3. Mango
  4. Pinus
NEET 2018
6

Double fertilization is

  1. fusion of two male gametes of a pollen tube with two different eggs
  2. fusion of one male gamete with two polar nuclei
  3. fusion of two male gametes with one egg
  4. syngamy and triple fusion
NEET 2018
7

Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?

  1. Hydrilla
  2. Yucca
  3. Banana
  4. Viola
NEET 2018
8

Pollen grains can be stored for several years in liquid nitrogen having a temperature of

  1. -120 C
  2. -80 C
  3. -196 C
  4. -160 C
NEET 2018
9

The morphological nature of the edible part of coconut is

  1. cotyledon
  2. endosperm
  3. pericarp
  4. perisperm
NEET 2017
10

Functional megaspore in an angiosperm develops into an

  1. endosperm
  2. embryo sac
  3. embryo
  4. ovule.
NEET 2017
11

Attractants and rewards are required for

  1. entomophily
  2. hydrophily
  3. cleistogamy
  4. anemophily.
NEET 2017

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