Home
Class 12
BIOLOGY
(A) : Lower plants usually reproduce by ...

(A) : Lower plants usually reproduce by asexual means.
(R) : It helps rapid growth and multiplication in lesser time without involvement of gametes.

A

If both (A) and (R) are true and (R ) is the correct explanation of (A)

B

If both (A) and (R) are true but (R ) is not the correct explanation of (A)

C

If (A) is true but (R) is true

D

If both (A) and (R) are false.

Text Solution

Verified by Experts

The correct Answer is:
a
Promotional Banner

Topper's Solved these Questions

  • REPRODUCTIVE HEALTH

    GRB PUBLICATION|Exercise Assertion -Reason Type Questions|36 Videos

  • REPRODUCTION IN ORGANISMS

    GRB PUBLICATION|Exercise EXEMPLAR PROBLEMS|33 Videos

  • SEXUAL REPRODUCTION IN FLOWERING PLANTS

    GRB PUBLICATION|Exercise NCERT Corner|23 Videos

Similar Questions

Explore conceptually related problems

Assertion : In plants, apomixis is a form of asexual reporduction that minics sexual reproduction. Reason : Apomixis involves the production of seeds without the fusion of gametes.

The figure below depicts life-histroy strategies for three plant species (a,b and c) along 3 axes : strength of competition with other organisms, level of distrubance in the habitat, and level of environmental stress in the habitat. Species a grows in habitats where competition among species b grown in habitats with and stress are low. Species b grows in habitats with high environmental stress but with low interspecies competition. Species c grows in highly disturbed habitats with low enviornmental stress. Which of the statements below is/are correct ? I. Characteristics of "a-type" plants are faster growth rate and short-lived leaves. II. Desert annual plants are "b-type" species. they have rapid growth and produce large amount of seeds in a short time after rains. III. Most plants belonging to "c-type" species would be herbaceous while "a-type" and "b-types" species are likely to be trees or shrubs.

Assertion (A): Plasmodium reproduces by multiple fission. Reason (R) : Multiple fission is a type of asexual reproduction.

GRB PUBLICATION-REPRODUCTIVE HEALTH-Assertion -Reason Type Questions
  1. (A): Sexually reproducing organisms begin life as a single cell. (R)...

    Text Solution

    |

  2. (A) : Parthenogenesis means the growth and development of an egg witho...

    Text Solution

    |

  3. (A) : Lower plants usually reproduce by asexual means. (R) : It help...

    Text Solution

    |

  4. (A): Progressive degeneration of sexuality is a primitive character in...

    Text Solution

    |

  5. (A) : Accessory organs of the flowers are sterile parts. (R) : They ...

    Text Solution

    |

  6. (A) : Pollens are produced in microsporangia after meiotic divison. ...

    Text Solution

    |

  7. (A) : Exine of pollen is chiefly made up of sporopollenin. (R): Spor...

    Text Solution

    |

  8. (A) : Ovule is an integumented megasporangium . (R) It does not dehi...

    Text Solution

    |

  9. (A) : Incampylotropous type the body of ovule is horseshoe shaped. (...

    Text Solution

    |

  10. (A) : Cleistogamous flowers are ususally self pollinated. (R) : Thes...

    Text Solution

    |

  11. (A) : All graminaceous flowers are always wing pollinated. (R) : The...

    Text Solution

    |

  12. (A) : Insect visit flowers to collect honey. (R): Attraction of flow...

    Text Solution

    |

  13. (A) : Mammalian ova produces an emzyme hyaluronidase. (R): This enzy...

    Text Solution

    |

  14. (A) : Testes of mammals are present outside abdomnial cavity in scrota...

    Text Solution

    |

  15. (A) : Whales and elephants have abdominal testes. (R) : Being poilil...

    Text Solution

    |

  16. (A) : Leyding cells are found without seminiferous tubules of testes. ...

    Text Solution

    |

  17. (A) : Androgens are sometimes called anabolic steroids (R) : They st...

    Text Solution

    |

  18. (A) : Cowpers glands are present in male mammals. (R) : Their secret...

    Text Solution

    |

  19. (A) : The oocyte of a mammal is enclosed in a perforated membrane call...

    Text Solution

    |

  20. (A): Fertilization in mammales occurs in uterus. (R) : The embryo ge...

    Text Solution

    |