Tag: reproduction

Questions Related to reproduction

Outer wall/ exine of pollen grain is formed of.

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  1. Cellulose

  2. Pectocellulose

  3. Lignin

  4. Sporopollenin

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Correct Option: D

Number of chromosomes is $24$ in nucellus. Number of chromosomes in microspore mother cell would be.

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  1. $36$

  2. $30$

  3. $24$

  4. $12$

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Correct Option: C

Female gamete of angiosperms is represented by.

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  1. Oospore

  2. Carpel

  3. Egg

  4. Pollen grain

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Correct Option: C

Study of pollen grains is?

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  1. Palynology

  2. Palaeontology

  3. Palaeobotany

  4. None of the above

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Correct Option: A

Ovule is straight with funiculus, embryo sac, chalaza and micropyle lying on one straight line. It is?

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  1. Orthotropous

  2. Anatropous

  3. Campylotropous

  4. Amphitropous

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Correct Option: A

Microspore mother cell forms.

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  1. Microsporangium

  2. Pollen sac

  3. Female gametophyte

  4. Pollen grains

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Correct Option: D

Which of the following statements is not correct?

sexual reproduction in flowering plants reproduction - the generating system reproduction sexual reproduction biology reproductive health of humans need of family planning reproductive health problems cell division in embryo development division for growth and reproduction reproductive health

  1. Some reptiles have also been reported as pollinators in some plant species

  2. Pollen grains of many species can germinate on the stigma of a flower but only one pollen tube of the same species grows into the style

  3. Insects that consume pollen or nectar without brining about pollination are called pollen/ nectar robbers

  4. Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of pistil

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Correct Option: B

Which is not properly matched?

sexual reproduction in flowering plants reproduction - the generating system reproduction sexual reproduction biology reproductive health of humans need of family planning reproductive health problems cell division in embryo development division for growth and reproduction reproductive health

  1. Exine of pollen grain - Sporopollenin

  2. Tapetum - Ubisch bodies

  3. Male gametophyte pf angiosperms - No prothalial cells

  4. Most common type of ovule - Orthotropous

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Correct Option: D

Chromosome number in pollen grain is $6$. What shall be it's number in leaf tip cells.

sexual reproduction in flowering plants reproduction - the generating system reproduction sexual reproduction biology reproductive health of humans need of family planning reproductive health problems cell division in embryo development division for growth and reproduction reproductive health

  1. $6$

  2. $12$

  3. $24$

  4. $3$

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Correct Option: A

Number of chromosomes in root cell is $14$. What will be chromosome number in synergids.

sexual reproduction in flowering plants reproduction - the generating system reproduction sexual reproduction biology reproductive health of humans need of family planning reproductive health problems cell division in embryo development division for growth and reproduction reproductive health

  1. $14$

  2. $21$

  3. $7$

  4. $28$

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Correct Option: C