After double fertilizaton, a mature ovule has

(1) 1 diploid and 1 haploid cell

(2) 1 diploid and 1 triploid cell

(3) 2 haploid and 1 triploid cell

(4) 1 haploid and 1 triploid cell

Subtopic:  Double Fertilization |
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How many haploid nuclei are present in a mature pollen grain?

(1) One

(2) Two

(3) Three

(4) Four

Subtopic:  Double Fertilization |
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What is the correct sequence of the formation of female gametophyte in angiosperms?

(1) Nucellus, megapore tetrad, megaspore mother cell, megaspore, female gametophyte

(2) Megaspore tetrad, nucellus, megaspore mother cell, megaspore, female gametophyte

(3) Nucellus, megaspore mother cell, megaspore tetrad, megaspore, female gametophyte

(4) Megaspore mother cell, megaspore tetrad, megaspore, nucellus, female gametophyte

Subtopic:  Pistil: Female Gametophyte |
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Primary endosperm nucleus (PEN) is formed by the fusion of

(1) 2 polar nuclei + 1 synergid cell nucleus

(2) 1 polar nucleus + 1 antipodal cell nucleus + 1 synergid cell nucleuus

(3) 2 polar nuclei + 1 male gamete nucleus

(4) 2 antipodal cell nuclei + 1 male gamete nucleus

Subtopic:  Endosperm |
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Match column I with column II and select the correct option from the given codes.

 

      Column - I

 

              Column - II

A.

Parthenocarpy

(i)

Seed formation without fertilization

B.

Polyembryony

(ii)

More than one embryo in same seed

C. 

Apomixis

(iii) 

Seedless fruits without fertilization

D.

Somatic embryogenesis   

(iv)  

Embryo develops from a somatic cell

(1) A - (iv), B - (ii), C - (iii), D - (i)

(2) A - (iii), B - (ii), C - (i), D - (iv)

(3) A - (i), B - (iv), C - (iii), D - (ii)

(4) A - (ii), B - (iii), C - (i), D - (iv)

Subtopic:  Apomixis & Polyembryony | Fruit |
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The following is the diagram of T.S. of anther. Identify the parts labelled A, B and C.

(1) A - Connective tissue, B - Pollen grains, C - Endothecium

(2) A - Endothecium, B -Connective tissue, C - Pollen grains

(3) A - Pollen grains, B - Connective tissue, C - Endothecium

(4) A - Endothecium, B - Pollen grains, C - Connective tissue

Subtopic:  Stamen: Microsporangium |
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Select the option that contains all plants which produce non-endospermic seeds.

(1) Gram, Pea, Bean, Groundnut

(2) Castor, Peanut, Orchid, Wheat

(3) Coconut, Walnut, Wheat, Gram

(4) Castor, Maize, Coconu, Orchid

Subtopic:  Seed |
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Pollination in Rafflesia is occurred by

a.   carrion flies

b.   elephant

c.   bat

d.   crow

 

Subtopic:  Pollination & Outbreeding Devices |
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Censar mechanism of seed dispersal is found in

(1) Papaveraceae

(2) Liliaceae

(3) Leguminosae

(4) Rosaceae

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Which one of the most common embryo sac in flowering plant?

(1) Monosporic, 8 nucleated and 7 celled

(2) Monosporic, 7 celled and 7 nucleated

(3) Bisporic, 8 nucleated and 7 celled

(4) Bisporic, 7 celled and 8 nucleated

Subtopic:  Stamen: Male Gametophyte |
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