Reproduction in Flowering Plants (Angiosperms) : Quiz 04 3

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Questions on Reproduction in Flowering Plants: MCQs on Sexual Reproduction in Flowering Plants (Angiosperms) in quiz format with answers, Test No. 04

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Reproduction in Flowering Plants (Angiosperms) : Quiz 04

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Question 1
In the fully organized polygonum type of embryo sac, what is the ratio of haploid, diploid and triploid nuclei?
A
6 : 1 : 0
B
6 : 0 : 1
C
3 : 1 : 3
D
3 : 2 : 3
Question 2
Vernalisation stimulates flowering in
A
Carrot
B
Turmeric
C
Elephant yam
D
Ginger
Question 3
What is the ratio of equational divisions that take place in Cycas and angiosperms respectively leading to the formation of male gametes from pollen grains?
A
2 : 1
B
3 : 1
C
3 : 2
D
2 : 3
Question 4
Ornithophily refers to the pollination by which of the following:
A
Snails
B
Birds
C
Insects
D
Air
Question 5
Ovule is attached to the placenta of ovary wall by:
A
Funicle
B
Raphae
C
Hilum
D
Testa
Question 6
Plants with ovaries having only one or a few ovules, are generally pollinated by
A
Birds
B
Butterflies
C
Bees
D
Wind
Question 7
Sporopollenin is chemically
A
Protein
B
Fatty substance
C
Homopolysaccharide
D
Heteropolysaccharide
Question 8
The pollen are liberated in Cassytha by:
A
Transverse dehiscence
B
Longitudinal dehiscence
C
Porous dehiscence
D
Valvular dehiscence
Question 9
There are 10 flowers in one individual plant of Crotalaria. In each microsporangium of every stamen of all the flowers, there are 30 microspore mother cells. How many pollen grains are formed from that plant?
A
48,000
B
24,000
C
10,000
D
4,000
Question 10

Consider the following statements and chose the correct option.

(a) The genetic constitution of a plant is unaffected in vegetative propagation

(b) Rhizome in ginger serves as an organ of vegetative reproduction

(c) Totipotency of cells enables us to micropropagate plants

A
Statements (b) alone is true
B
Statements (a) and (b) alone are true
C
Statements (b) and (c) alone are true
D
All the three statements (a), (b) and (c) are true
Question 11
Double fertilization involves:
A
Fertilization of the egg by two male gametes.
B
Fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube.
C
Fertilization of the egg and the central cell by two sperms brought by different pollen tubes.
D
Fertilization of the egg and the central cell by two sperms brought by the same pollen tube
Question 12
Grafting is successful in dicots but not in monocots because the dicots have:
A
cork cambium
B
vessels with elements arranged end to end
C
vascular bundles arranged in a ring
D
cambium for secondary growth
Question 13
In which one pair both the plants can be vegetatively propagated by leaf pieces
A
Asparagus and Bryophyllum
B
Agave and Kalanchoe
C
Bryophyllum and Kalanchoe
D
Chrysanthemum and Agave
Question 14
Match the following ovular structure with post fertilization structure and select the correct alternative.
A. Ovule 1. Endosperm
B. Funiculus 2. Aril
C. Nucellus 3. Seed
D. Polar nuclei 4. Perisperm
A
A = 2, B = 3, C = 4, D = 1
B
A = 2, B = 3, C = 1, D = 4
C
A = 3, B = 2, C = 4, D = 1
D
A = 3, B = 2, C = 1, D = 4
Question 15
Pick out the wrong statement.
A
Double fertilization is unique to gymnosperms and monocotyledons
B
Sequoia, a gymnosperm, is one of the tallest trees
C
Phaeophyceae members possess chlorophyll a, c, carotenoids and xanthophylls
D
Moss is gametophyte which consists of two stages namely, protonema stage and leafy stage
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3 thoughts on “Reproduction in Flowering Plants (Angiosperms) : Quiz 04”

  • Reply ↓
    harusha milana

    can u explain how will 30 microspore mother cell of each flower in 10 flower bearing crotolaria produces 48000 pollen grains

    • Reply ↓
      zeba

      1 microspore = 4 pollen grains(P)
      30 microspore = 120 P
      In 1 anther there is 4 microsporangium
      1 anther =120*4= 480 P
      so 1 flower = 10 anther =4800 P
      so 10 flower = 48000 P