The normal type of embryo sac is 8-nucleated and

(1) 8-celled

(2) 7-celled

(3) 6-celled

(4) 5-celled

Subtopic:  Pistil: Female Gametophyte |
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Embryo sac is

(1) megaspore

(2) microgametophyte

(3) female gametophyte

(4) megasporangium

Subtopic:  Pistil: Female Gametophyte |
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The pollination of two flowers on different plants is known as

(1) xenogamy

(2) geitonogamy

(3) cleistogamy

(4) dichogamy

Subtopic:  Pollination & Outbreeding Devices |
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In some seeds, reminants of nucellus are also presistent. This residual, persistent nucellus is the

(1) pericarp

(2) perisperm

(3) chalazosperm

(4) mesosperm

Subtopic:  Seed |
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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

Subtopic:  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

Subtopic:  Stamen: Anther | Stamen: Microsporangium |
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Which among the following extend longitudinally to become pollen sac?

(1) Microsporangia

(2) Filament of anther

(3) Tapetum

(4) Endothecium

Subtopic:  Stamen: Anther | Stamen: Microsporangium |
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Which among the following is not a feature of anther?

(1) Bilobed

(2) Dithecous

(3) Apocarpous

(4) Tetragonal

Subtopic:  Stamen: Anther |
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Which among the following is not a wall layer of microsporangium?

(1) Endothecium

(2) Nucellus

(3) Tapetum

(4) Middle layers

Subtopic:  Stamen: Microsporangium | Pistil: Ovule |
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All of the following statements are correct except:

(1) The proximal end of the filament is attached to the thalamus or the petal of the flower.

(2) The anther is a four-sided structure consisting of four microsporangia, two in each lobe.

(3) The number and length of stamens are variable in flowers of different species.

(4) In a longitudinal section, a typical microsporangium appears near circular in outline.

Subtopic:  Stamen: Microsporangium |
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