Home
Class 12
BIOLOGY
[A]: Development in cockroach is termed ...

[A]: Development in cockroach is termed as retrogressive metamorphosis .
[R] : The young ones resemble adults in all essential respects .

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 and R is false

D

If both A and R are false

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ANATOMY OF FLOWERING PLANTS

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|194 Videos
  • ANIMAL KINGDOM -NONCHORDATES

    TRUEMAN BIOLOGY|Exercise MCQ|283 Videos

Similar Questions

Explore conceptually related problems

Ferns resemble with mosses in one respect

During retrogressive metamorphosis of the ascidian tadpole, which one of the following does not regress?

[A] : [A]: Parthenogenesis is a type of asexual reproduction. [R]: Because young ones develop without fertilization of egg

Nymph, the young cockroach, differs from adult cockroach in

[A] : In the adult bird , only the left ovary is well developed . [R] : A single ovary results in loss of weight as well as in decreasing the number of eggs produced .

[A] : All body cells continuously obtain useful material from, and dispose of their waste products into the external fluid medium. This is mainly maintained as a constancy and is termed excretion. [R]: This is achieved by constant disposal or excretion of all waste products and reuse, as well as, useless materials from body into external environments.

in dugessia the development of young ones is

Statement (S). : Cockroach is "paurometabolus" with reference to its development Reason ( R). : In the development of cockroach, there is no nymphal stage

[A] : Bees are colour-blind for red and are fond of yellow, violet and purple. [R] : Normally only one pollen tube develops from a pollen grain.

One end of a string of length L and cross sectional area A is fixed to a support and the other end is fixed to a bob of mas m. The bob is revolved in a horizontal circle of radius r with an angular velocity omega such that the string makes an angle theta with the vertical. Young's modulus is Y. The angular velocity omega is equal to

TRUEMAN BIOLOGY-Animal Kingdom -ASSERTION AND REASON
  1. [A] : Earthworm obtain oxygen for respiration through moist skin . The...

    Text Solution

    |

  2. [A] : Presence of alimentary canal would not have suited the mode of l...

    Text Solution

    |

  3. [A]: Development in cockroach is termed as retrogressive metamorphosis...

    Text Solution

    |

  4. [A] : All the gills of Palaemon are phyllobranchs . [R] : Each gill ...

    Text Solution

    |

  5. [A] : Renal-sac of Prawn functions in same manner as vertebrate kidney...

    Text Solution

    |

  6. [A] : Pila is adopted to lead an amphibious life . [R] : It is provi...

    Text Solution

    |

  7. [A] : Chordates have poor regeneration power while non-chordates have ...

    Text Solution

    |

  8. [A] : In lower invertebrates the digestion is intracellular while in h...

    Text Solution

    |

  9. [A] : Chordates have an oxygen carrying pigment called haemoglobin . I...

    Text Solution

    |

  10. [A] : Huxley comments that Birds are glorified reptiles . [R] : Bird...

    Text Solution

    |

  11. [A] : Birds excrete uric acid . [R] : Birds do not have a urinary b...

    Text Solution

    |

  12. [A] : In elastic lungs of birds are supplemented by remarkable system ...

    Text Solution

    |

  13. [A] : Sphenodon is referred to as a living fossil . [R] : It has ret...

    Text Solution

    |

  14. [A] : In reptiles , lizards show autotomy . [R] : Tail of most lizar...

    Text Solution

    |

  15. [A] : Heloderma is called beaded lizard . [R] : Its scales resemble ...

    Text Solution

    |

  16. Assertion: Krait is poisonous snakes. Reason: Belly scales are small...

    Text Solution

    |

  17. [A] : In the adult bird , only the left ovary is well developed . [R...

    Text Solution

    |

  18. [A] : Rabbit is classified as mammal . [R] : Rabbit possesses mammar...

    Text Solution

    |

  19. [A] : Origin of mammals is polyphyletic . [R] : Mammals are derived...

    Text Solution

    |

  20. [A] : The Ascidian tadpole larva possess all the basic chordate charac...

    Text Solution

    |