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

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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

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Pollination in Rafflesia is occurred by

a.   carrion flies

b.   elephant

c.   bat

d.   crow

 

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Censar mechaniism 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

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When a fern plant is developed from its prothallus without fertilisation? This pehnomenon is an example of

(1) parthenocarpy

(2) apogamy

(3) apospory

(4) organogenesis

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In a flowering plant, the pollen tube first arrives in

(1) egg

(2) an antipodal cell

(3) a synergid

(4) central cell

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If a stock has 2n = 48 and scion microspore mother cell has 2n = 24; then root cell and the microspores will have .... chromosomes respectively.

(1) 12, 48

(2) 48, 12

(3) 24, 12

(4) 24, 96

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A fertilized egg of a plant has 40 chromosomes. The number of chromosomes present in the microspore mother cell is

(1) 20

(2) 40

(3) 60

(4) 80

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Feathery stigma belongs to

(1) wheat

(2) pea

(3) Datura

(4) Caesalpinia

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