Home
Class 12
BIOLOGY
$ Diadelphous has two groups of epipetal...

$ Diadelphous has two groups of epipetalous stamens.
! Dichogamy refers to unisexual flowers.

A

If both As and R are correct and R is correct explanation of As

B

If both As and R are correct but R is not correct explanation of As

C

If As is correct, R is wrong

D

If both As and R are wrong.

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL ISSUES

    DINESH PUBLICATION ENGLISH|Exercise Model test paper-1|100 Videos
  • ENVIRONMENTAL ISSUES

    DINESH PUBLICATION ENGLISH|Exercise Model test paper-2|100 Videos
  • ENVIRONMENTAL ISSUES

    DINESH PUBLICATION ENGLISH|Exercise Brain teasers-X|145 Videos
  • ECHINODERMATA

    DINESH PUBLICATION ENGLISH|Exercise REVISION QUESTIONS|65 Videos
  • EVIDENCES OF EVOLUTION

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|19 Videos

Similar Questions

Explore conceptually related problems

Name the following: Two unisexual flowers.

Rose has several whorls of petals, stamens and carpels. Its flower is

Read the following statements A to D :- A. A typical anther of angiosperm is dithecous. B. Egg apparatus consists of two antipodals and one egg cell. C. Cleistogamous flowers are invariably autogamous. D. If a female parent produces unisexual flowers, there is no need for emasculation. How many of the above statements are right?

A fatty acid has two groups, -R group and _____.

Which among the following statements are true for unisexual flowers? (i) They possess both stamen and pistil. (ii) They possess either stamen or pistil. (iii) They exhibit cross pollination. (iv) Unisexual flowers possessing only stamens cannot produce fruits.

Define the following terms and also give two examples in each case : Unisexual flower

Given below are five statements (i-v) regarding constrivances to ensure cross - pollination is plants (i) Dicliny - Anthers stigmas mature at different times in a bisexual flower. (ii) Dichogamy - Flowers are unisexual. (iii) Prepotency - Pollen grains of the same flower germinate more rapidly over the stigma than the pollen grains another flower. (iv) Heterostyly - Two or three types of flowers with different heights of styles. (v) Herkogamy - A mechanical device to prevent self - pollination which of the above statement are correct ?

DINESH PUBLICATION ENGLISH-ENVIRONMENTAL ISSUES-Assertion and reason
  1. Assertion: Rhipidium is a type of helicoid uniparouscyme. Reason: So...

    Text Solution

    |

  2. $ Actinomorphic flower has a regular symmetry. ! Shoe-flower is acti...

    Text Solution

    |

  3. $ Diadelphous has two groups of epipetalous stamens. ! Dichogamy ref...

    Text Solution

    |

  4. As Single cotyledon of monocots is called Scutellum R Monocots show ...

    Text Solution

    |

  5. $ Grafting is always between a stock and scion. ! Movements under th...

    Text Solution

    |

  6. A Blood is a type of fluid tissue. R Blood has erythrocytes, Leucocy...

    Text Solution

    |

  7. As: There are present villi in the intestine. R: Ileum is the other ...

    Text Solution

    |

  8. A The fine branches of trachea are called bronchoiles. R Bronchitis ...

    Text Solution

    |

  9. A The blood vessels called arteries have thick walls. R Blood transf...

    Text Solution

    |

  10. As: Bowman's capsules are present in the kidneys of human beings. R:...

    Text Solution

    |

  11. $ Cerebrum is formed of four cerebral hemisphers. ! Pituitary gland ...

    Text Solution

    |

  12. $ The reproductive cells in the testes are called spermatocytes. ! L...

    Text Solution

    |

  13. As: Gregor mendel is also known as the "father of biology" R: He gav...

    Text Solution

    |

  14. $ A cross between the pure recessive parent and the F-1 offspring is c...

    Text Solution

    |

  15. $ Incomplete dominance is due to gene interaction. ! Complementry ge...

    Text Solution

    |

  16. $ Sicke cell anaemia is a type of pleiotropy. ! Sex linked inharitan...

    Text Solution

    |

  17. $ The term chromosome was introduced by Waldeyer. ! Sex chromosomes ...

    Text Solution

    |

  18. Assertion: DNA replication in a bacterial cell is bidirectional. Rea...

    Text Solution

    |

  19. Assertion: A chromosomes with equal sized arms is called isobrachial. ...

    Text Solution

    |

  20. As: Haemophilia is a sex linked disease R: Haemophilia is due to a r...

    Text Solution

    |