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

Concept Questions :-

Apomixis & Polyembryony
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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

Concept Questions :-

Stamen: Microsporangium
Stamen: Male Gametophyte
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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

Concept Questions :-

Pistil: Ovule
Pistil: Female Gametophyte
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Feathery stigma belongs to

(1) wheat

(2) pea

(3) Datura

(4) Caesalpinia

Concept Questions :-

Pollination & Outbreeding Devices
Post Pollination Events
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The normal type of embryo sac is 8-nucleated and

(1) 8-celled

(2) 7-celled

(3) 6-celled

(4) 5-celled

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Embryo sac is

(1) megaspore

(2) microgametophyte

(3) female gametophyte

(4) megasporangium

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The pollination of two flowers on different plants is known as

(1) xenogamy

(2) geitonogamy

(3) cleistogamy

(4) dichogamy

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In some seeds, reminants of nucellus are also presistent. This residual, persistent nuclelus is the

(1) pericarp

(2) perisperm

(3) chalazosperm

(4) mesosperm

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