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Sexual Reproduction in Flowering Plants · Question 59

AIPMT 2015MCQEasy📈 Topic in 50% papers+4−1
1

In angiosperms, microsporogenesis and mega-sporogenesis

  1. involve meiosis
  2. occur in ovule
  3. occur in anther
  4. form gametes without further divisions.

Answer

(1) involve meiosis

Solution

As per NCERT, microsporogenesis is the formation of microspores from a pollen mother cell through meiosis (in the anther), and megasporogenesis is the formation of megaspores from the megaspore mother cell by meiosis (in the ovule).

∵ The spores formed must divide further by mitosis to form the male and female gametophytes, which then produce gametes.

∴ The common feature of both processes is that they involve meiosis.

Answer: (1)

AIPMT 2015

Keep practising — Sexual Reproduction in Flowering Plants

2

Flowers are unisexual in

  1. China rose
  2. onion
  3. pea
  4. cucumber.
AIPMT 2015
3

Coconut water from a tender coconut is

  1. innermost layers of the seed coat
  2. degenerated nucellus
  3. immature embryo
  4. free nuclear endosperm.
AIPMT 2015
4

Which one of the following fruits is parthenocarpic?

  1. Jackfruit
  2. Banana
  3. Brinjal
  4. Apple
AIPMT 2015
5

Male gametophyte in angiosperms produces

  1. single sperm and two vegetative cells
  2. three sperms
  3. two sperms and a vegetative cell
  4. single sperm and a vegetative cell.
AIPMT 2015
6

Which of the following are the important floral rewards to the animal pollinators?

  1. Floral fragrance and calcium crystals
  2. Protein pellicle and stigmatic exudates
  3. Colour and large size of flower
  4. Nectar and pollen grains
AIPMT 2015 (Cancelled)
7

Which one of the following may require pollinators, but is genetically similar to autogamy?

  1. Apogamy
  2. Cleistogamy
  3. Geitonogamy
  4. Xenogamy
AIPMT 2015 (Cancelled)
8

Which one of the following statements is not true?

  1. The flowers pollinated by flies and bats secrete foul odour to attract them.
  2. Honey is made by bees by digesting pollen collected from flowers.
  3. Pollen grains are rich in nutrients and they are used in the form of tablets and syrups.
  4. Pollen grains of some plants cause severe allergies and bronchial afflictions in some people.
AIPMT 2015 (Cancelled)
9

Transmission tissue is characteristic feature of

  1. dry stigma
  2. wet stigma
  3. hollow style
  4. solid style.
AIPMT 2015 (Cancelled)
10

Geitonogamy involves

  1. fertilization of a flower by the pollen from another flower of the same plant
  2. fertilization of a flower by the pollen from the same flower
  3. fertilization of a flower by the pollen from a flower of another plant in the same population
  4. fertilization of a flower by the pollen from a flower of another plant belonging to a distant population.
AIPMT 2014
11

Pollen tablets are available in the market for

  1. in vitro fertilization
  2. breeding programmes
  3. supplementing food
  4. ex situ conservation.
AIPMT 2014

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