Home
Class 11
BIOLOGY
Assertion: All living species of Cycas a...

Assertion: All living species of Cycas are dioecious
Reason: Cycas contains male and female cones on the same plant.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
c
All living species of Cycas are dioecious aas the male and female structures occurs on separate plants. The microsporphylls are aggregated into large compact Male strobilior cones. The megasporophylls are loosely arranged. They do not form a true cone.
Promotional Banner

Topper's Solved these Questions

  • PLANT GROWTH AND DEVELOPMENT

    ERRORLESS |Exercise Plant Growth And Development|270 Videos

  • PROSTISTA

    ERRORLESS |Exercise Prostista|225 Videos

Similar Questions

Explore conceptually related problems

Which of the following has both the male and female cones on same plant body ?

Find the number of plants with both male and female flowers on the same plant.

Assertion : Cucurbita is a monoecious plant. Reason : In Cucrbita, both male and femle flowers are present on the same plant.

Assertion: The female cones are same in number as male cones. Reason: Male and female cones appears alternately on the same branch of the Pinus.

Assertion :- Male nd female ratio is almost equal in this world. Reason male and felmale genotype is XY and XX.

The stem of female Cycas plant is a

Assertion: Claspers of certilage fishes are analogous to penis of human male Reason: Both act as copulatory organs and transfer the sperms into female

Assertion : Mammals , living in deserts contain more concentrated urine . Reason : They contain very long loop of Henle in their nephrons .

ERRORLESS -PLANT KINGDOM-Plant Kingdom
  1. Assertion: The peristome is a fringe of teeth-like projections found a...

    Text Solution

    |

  2. Assertion: The mesophyll of Pinus shows no distinction as mesophyll an...

    Text Solution

    |

  3. Assertion: Pinus shows formation of annual rings. Reason: Pinus grow...

    Text Solution

    |

  4. Assertion: Mosses are used as pollution indicators. ltbr. Reason: They...

    Text Solution

    |

  5. Assertion: Mosses are evolved from algae. Reason: Protonema of mosse...

    Text Solution

    |

  6. Assertion: The sorus of pteridium is of coenosorus type. Reason: Pte...

    Text Solution

    |

  7. Assertion: Coenosorus lacks true indusium. Reason: Indusium convers ...

    Text Solution

    |

  8. Assertion: Ramenta are scales which cover young rhizome and leaves of ...

    Text Solution

    |

  9. Assertion: The scale leaves on the long shoots are called cataphylls. ...

    Text Solution

    |

  10. Assertion: Both bryophytes and pteridophytes contain well-developed an...

    Text Solution

    |

  11. Assertion: Water is not required for fertiization process in ferms. ...

    Text Solution

    |

  12. Assertion: Sporophytes of pteridophyta are dominant individual. Reas...

    Text Solution

    |

  13. Assertion: In gymnosperms, plants show well-developed vessels and fibr...

    Text Solution

    |

  14. Assertion: In leptosporangiate development of sporangia starts from a ...

    Text Solution

    |

  15. Assertion: Adiantum caudatum is called walking ferm. Reason: It can ...

    Text Solution

    |

  16. Assertion: Gymnosperms seeds are naked. Reason: They lack ovary wall...

    Text Solution

    |

  17. Assertion: Pinus has a pyramidal appearance. Reason: The older parts...

    Text Solution

    |

  18. Assertion: The female cone of Cycas is not true cone. Its formation ...

    Text Solution

    |

  19. Assertion: All living species of Cycas are dioecious Reason: Cycas c...

    Text Solution

    |

  20. Assertion: The male of Cycas change in size when the microspores becam...

    Text Solution

    |