Home
Class 12
BIOLOGY
Assertion (A) : Self - pollination is ce...

Assertion (A) : Self - pollination is certain in cleistogamous flowers.
Reason (R) : Flowers never open and not expose reproductive organs.

A

a) Both A and R are incorrect .

B

b) A is correct R is incorrect

C

c) R explains A.

D

d) Both A and R are correct . R is not a correct explanation for A

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ASEXUAL AND SEXUAL REPRODUCTION IN PLANTS

    FULL MARKS|Exercise Additional Questions (2- Mark Questios)|49 Videos

  • ASEXUAL AND SEXUAL REPRODUCTION IN PLANTS

    FULL MARKS|Exercise Additional Questions (3- Mark Questios)|33 Videos

  • ASEXUAL AND SEXUAL REPRODUCTION IN PLANTS

    FULL MARKS|Exercise Higher Order Thinking Skills (HOTs) Questions|9 Videos

  • APPLICATIONS OF BIOTECHNOLOGY

    FULL MARKS|Exercise HIGHER ORDER THINKING SKILLS (HOTs) QUESTIONS|7 Videos

  • BIODIVERSITY AND ITS CONSERVATION

    FULL MARKS|Exercise Higher Order Thinking Skills (HOT) Questions|5 Videos

Similar Questions

Explore conceptually related problems

Flower with its sexual reproductive organs

Assertion (A) : Self - sterility is observed in Nicotiana species. Reason (R) : Because the genes are located on chromosome.

Assertion (A) : Angiosperms have ovary in the flower. Reason (R) : They produce fruits and seeds.

Assertion (A) : The inner ear acts as an organ of balance. Reason (R ) : IT contains the ear ossicles.

Assertion (A) : Androecium and Gynoecium are essential whorls of flower Reason (R) Androecium and Gynoecium assist the reproduction.

Assertion : Vernalisation is the promotion of flowering by a period of low temperature. Reason : It prevents precocious reproductive development late in the growing season.

What are chasmogamous flowers ? Can cross -pollination occur in cleistogamous flowers ? Give reasons for your answer.

Pollination which occurs without opening of flowers ………… .

Assertion : Pollination and fertilization in flowers produces fruits and seeds. Reason : After fertilization the ovary becomes fruit and ovule becomes seed.

FULL MARKS-ASEXUAL AND SEXUAL REPRODUCTION IN PLANTS-Additional Questions (1- Mark Questios)
  1. Identify the incorrect statement about the Gram positive bacteria

    Text Solution

    |

  2. Generally the pollen grains are liberated from anther at ........

    Text Solution

    |

  3. Assertion (A) : Self - pollination is certain in cleistogamous flowers...

    Text Solution

    |

  4. Assertion (A) : Entamophily is the most common type of pollination R...

    Text Solution

    |

  5. Statement 1 : Primary sporogenous cell functions as megaspore mother c...

    Text Solution

    |

  6. Statement 1 : Apomixis does not involve meiosis and syngamy. Stateme...

    Text Solution

    |

  7. Statement 1: The pollen grains are deposited on the receptive surface ...

    Text Solution

    |

  8. Which of the following post fertilization change is incorrectly matche...

    Text Solution

    |

  9. Indentify the parthenocarpic fruit

    Text Solution

    |

  10. A mature angiospermic embryo sac is …………………… .

    Text Solution

    |

  11. Identify the type of ovule, where the nucellus acquires a horse - shoe...

    Text Solution

    |

  12. The egg aparatus is made up of ...............

    Text Solution

    |

  13. Match the following : {:("(1)Hemianatropus","(i) hilum , micropyle ...

    Text Solution

    |

  14. What is triple fusion ?

    Text Solution

    |

  15. Ex - albuminous seeds are .........

    Text Solution

    |

  16. What is the edible part in Conconut?

    Text Solution

    |

  17. Observe the diagram and select the correct option mentioning the part ...

    Text Solution

    |

  18. Examine the figures and name the respective type of ovule.

    Text Solution

    |

  19. Attractants and rewards are required for ..........

    Text Solution

    |

  20. Filiform apparatus is a special cellular thickening which is seen in ....

    Text Solution

    |