Male gametophyte in angiosperms produces 

1. two sperms and a vegetative cell

2. single sperm and a vegetative cell

3. single sperm and two vegetative cells

4. three sperms

Subtopic:  Stamen: Male Gametophyte |
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Which one of the following statements is not true?

1. Pollen grains are rich in nutrients and they are used in the form of tablets and syrups

2. Pollen grains of some plants cause severe allergies and bronchial afflictions in some

people 

3. The flowers pollinated by flies and beetles secrete foul odour to attract them

4. Honey is made by bees by digesting pollen collected from flowers

Subtopic:  Stamen: Male Gametophyte |
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Perisperm differs from endosperm in

1. being a haploid tissue

2. having no reserve food

3. being a diploid tissue

4. its formation by fusion of secondary nucleus with several sperms

Subtopic:  Seed |
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Identify the different parts of a typical dicot embryo labelled as A, B and C and select the correct option.

Answer to question: Identify the different parts of a typical

        A        B       C

(1)

Plumule

Cotyledons

Radicle

(2)

Radicle

Cotyledons

Plumule

(3)

Cotyledons

Plumule

Radicle

(4)

Cotyledons

Radicle

Plumule

Subtopic:  Embryo |
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Pollen grains are shed at which stage?

(1) 2 celled 

(2) 3 celled

(3) Usually at 2-celled, but sometimes 3-celled

(4) Single celled stage

Subtopic:  Pollination & Outbreeding Devices |
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Sporophyte formation from gametophyte is called

(1) apogamy

(2) sporogenesis

(3) gametogenesis

(4) apospory

Subtopic:  Apomixis & Polyembryony |
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Which of these is a diploid structure ?

(1) Pollen grains

(2) Egg

(3) Megaspore

(4) MMC

Subtopic:  Stamen: Microsporangium |
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False fruit in an apple is formed from

(1) receptacle

(2) thalamus

(3) peduncle

(4) petals.

Subtopic:  Fruit |
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Cross pollination in true genetic sense is 

(1) allogamy

(2) cleistogamy

(3) geitonogamy

(4) autogamy

Subtopic:  Pollination & Outbreeding Devices |
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Seed of castor is

(1) non-endospermic, exalbuminous

(2) endospermic albuminous

(3) endospermic exalbuminous

(4) non-endospermic albuminous.

Subtopic:  Seed |
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Difficulty Level: