The embryo sac is to ovule as _______ is to an anther.

1. Stamen 2. Filament
3. Pollen grain 4. Androecium

Subtopic:  Stamen: Anther |
 75%
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In a typically complete, bisexual, and hypogynous flower, the arrangement of floral whorls on the thalamus from the outermost to the innermost is:
1. Calyx, corolla, androecium, and gynoecium
2. Calyx, corolla, gynoecium, and androecium
3. Gynoecium, androecium, corolla, and calyx
4. Androecium, gynoecium, corolla, and calyx

Subtopic:  Pollen - Pistil Interaction |
 80%

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A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is:

1. Plant is dioecious and bears only pistillate flowers.
2. Plant is dioecious and bears both pistillate and staminate flowers.
3. Plant is monoecious.
4. Plant is dioecious and bears only staminate flowers.
Subtopic:  Seed | Fruit |
 62%

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The outermost and innermost wall layers of microsporangium in an anther are respectively:
1. Endothecium and tapetum
2. Epidermis and endodermis
3. Epidermis and middle layer
4. Epidermis and tapetum

Subtopic:  Stamen: Microsporangium |
 86%
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During microsporogenesis, meiosis occurs in:

1.Endothecium2.Microspore mother cells
3.Microspore tetrads4.Pollen grains

Subtopic:  Stamen: Male Gametophyte |
 91%
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From among the sets of terms given below, identify those that are associated with the gynoecium.

1.  Stigma, ovule, embryo sac, placenta
2.  Thalamus, pistil, style, ovule
3.  Ovule, ovary, embryo sac, tapetum
4.  Ovule, stamen, ovary, embryo sac

Subtopic:  Pistil: Female Gametophyte |
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Starting from the innermost part, the correct sequence of parts in an ovule are:

1.  egg, nucellus, embryo sac, integument
2.  egg, embryo sac, nucellus, integument
3.  embryo sac, nucellus, integument, egg
4.  egg, integument, embryo sac, nucellus

Subtopic:  Pistil: Ovule | Pistil: Female Gametophyte |
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From the statements given below, choose the option that is true for a typical female gametophyte of a flowering plant:

i.  It is 8-nucleate and 7-celled at maturity
ii.  It is free-nuclear during the development
iii.  It is situated inside the integument but outside the nucellus
iv.  It has an egg apparatus situated at the chalazal end

1.i and iv2.ii and iii
3.i and ii4.ii and iv

Subtopic:  Pistil: Ovule | Pistil: Female Gametophyte |
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Autogamy can occur in a chasmogamous flower if:
1. Pollen matures before the maturity of ovule.
2. Ovules mature before the maturity of pollen.
3. Both pollen and ovules mature simultaneously.
4. Both anther and stigma are of equal lengths.

Subtopic:  Pollination & Outbreeding Devices |
 85%
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Choose the correct statement from the following:

1.  Cleistogamous flowers always exhibit autogamy
2.  Chasmogamous flowers always exhibit geitonogamy
3.  Cleistogamous flowers exhibit both autogamy and geitonogamy
4.  Chasmogamous flowers never exhibit autogamy

Subtopic:  Pollination & Outbreeding Devices |
 85%
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