Parthenocarpic tomato fruits can be produced by :

(1) removing androecium of flowers before pollen grains are released

(2) treating the plants with low concentrations of gibberellic acid and auxins

(3) raising the plants from vernalized seeds

(4) treating the plants with phenylmercuric acetate.

Subtopic:  Fruit |
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Long filamentous threads protruding at the end of a young cob of maize are :

(1) anthers

(2) styles

(3) ovaries

(4) hairs

Subtopic:  Pollination & Outbreeding Devices |
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The arrangement of the nuclei in a normal embryo sac in the dicot plant is :

(1) 2+4+2

(2) 3+2+3

(3) 2+3+3

(4) 3+3+2

Subtopic:  Pistil: Female Gametophyte |
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In angiosperms, microsporogenesis and megasporogenesis

(1) occur in anther

(2) form gametes without further divisions

(3) involve meiosis

(4) occur in ovule

Subtopic:  Stamen: Microsporangium | Pistil: Female Gametophyte |
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Coconut water from a tender coconut is

1. Immature embryo

2. Free nuclear endosperm

3. Innermost layers of the seed coat

4. degenerated nucellus

Subtopic:  Endosperm |
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Which of of the following fruits is parthenocarpic?

1. Brinjal

2. Apple

3. Jackfruit

4. Banana

Subtopic:  Fruit |
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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 labeled as A, B and C and select the correct option.

      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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