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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Which among the following is attached to the proximal end of filament?

(1) Stamen

(2) Anther

(3) Petal

(4) Pollen sac

Concept Questions :-

Stamen: Anther
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A typical angiosperm bilobed and dithecous anther consists of how many theca?

(1) Two

(2) Four

(3) Eight

(4) Three

Concept Questions :-

Stamen: Anther
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What is the number of microsporangia in each lobe of an angiosperm anther?

(1) Four

(2) Two

(3) Eight

(4) One

Concept Questions :-

Stamen: Anther
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Difficulty Level: