Tag: sexual reproduction in flowering plants

Questions Related to sexual reproduction in flowering plants

Root of flowering plant has $24$ chromosomes. Its gamete would carry chromosomes.

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. $4$

  2. $8$

  3. $12$

  4. $24$

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Correct Option: C

Pollen grains are shed at.

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. One - celled stage

  2. $2-3$ celled stage

  3. $3$- celled stage

  4. $4$- celled stage

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Correct Option: B

Match the columns with correct combination of endosperm chromosomes.

Column I Column II
(a) Pisum sativum (i) $72$
(b) Oryza sativa (ii) $24$
(c) Nicotiaba tabacum (iii) $60$
(d) Allium cepa (iv) $36$
$21$
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. a-iv, b-i, c-ii, d-v

  2. a-i, b-ii, c-v, d-iv

  3. a-ii, b-v, c-iii, d-i

  4. a-v, b-iv, c-i, d-ii

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Correct Option: D

Outer wall/ exine of pollen grain is formed of.

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. 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.

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. $36$

  2. $30$

  3. $24$

  4. $12$

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Correct Option: C

Female gamete of angiosperms is represented by.

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. Oospore

  2. Carpel

  3. Egg

  4. Pollen grain

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Correct Option: C

Study of pollen grains is?

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. 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?

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. Orthotropous

  2. Anatropous

  3. Campylotropous

  4. Amphitropous

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Correct Option: A

Microspore mother cell forms.

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. 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