Male gametes in angiosperms are formed by the division of:
(1) microspore
(2) generative cell
(3) vegetative cell
(4) microspore mother cell
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following is surrounded by a callose wall?
(1) Microspore mother cell
(2) Male gemete
(3) Egg
(4) Pollen grain
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in it synergids ?
(1) 16
(2) 24
(3) 32
(4) 8
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyParthenocarpic 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.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLong filamentous threads protruding at the end of a young cob of maize are :
(1) anthers
(2) styles
(3) ovaries
(4) hairs
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn angiosperms, microsporogenesis and megasporogenesis
(1) occur in anther
(2) form gametes without further divisions
(3) involve meiosis
(4) occur in ovule
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCoconut water from a tender coconut is
1. Immature embryo
2. Free nuclear endosperm
3. Innermost layers of the seed coat
4. degenerated nucellus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of of the following fruits is parthenocarpic?
1. Brinjal
2. Apple
3. Jackfruit
4. Banana
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMale 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology