Home
Class 12
BIOLOGY
[A] : Earthworm obtain oxygen for respir...

[A] : Earthworm obtain oxygen for respiration through moist skin . They do not have respiratory organs .
[R] : They are burrowing in habit .

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

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • ANATOMY OF FLOWERING PLANTS

    TRUEMEN BIOLOGY ENGLISH|Exercise MULTIPLE CHOICE QUESTIONS|192 Videos
  • ANIMAL KINGDOM -NONCHORDATES

    TRUEMEN BIOLOGY ENGLISH|Exercise MCQ|285 Videos

Similar Questions

Explore conceptually related problems

[A] : In bacteria mesosomes help in respiration . [R] : Bacteria do not have mesosomes .

Human beings have a significant ability to maintain and moderate the respiratory rhythm to suit demands of the body. For it we have Respiratory rhythm centre in medulla -R Pneumotaxic centre in pons -RT Chemosensitive area in medulla - C_(1) Peripheral chemoreceptors in aortic arch and carotid artery - C_(2) Find out the correct path for regulation of respiration.

Assertion : In cockroach respiratory gases directly comes in contact with the various organs of the body. : Reason : Cockroaches do not have respiratory pigment

Read the following statements (a-e) and choose the suitable option w.r.t. respiration a. A series of slow step-wise reactions controlled by enzymes. b. Breaking of the C-C bonds of respiratory substrates through oxidation within the cells. c. Liberation of energy. d. Breakdown of complex molecules to yield energy which takes place in mitochondria only. e. Carbon skeleton produced during respiration is not used as precursor for cellular biosynthesis of other molecules.

Classify the following into osmosis/diffusion. (a) Swelling up of a raisin on keeping in water. (b) Spreading of virus on sneezing. (c) Earthworm dying on coming in contact with common salt. (d) Shrinking of grapes kept in thick sugar syrup. (e) Preserving pickles in salt (f) Spreading of smell of cake being baked through out the house. (g) Aquatic animals using oxygen dissolved in water during respiration.

Go through the following statements (i) the peripheral chemoreceptors for regulation of respiration are located in carotid veins and arch of aorta (ii) the primary effect of pneumotaxic centre is to control the switch off point of inspiratory signal and thus limit inspiraton (iii) the chemosensitve area for brain for respiratory control is highly sensitive to O_(2) concentration (iv) In case of fetal haemoglobin the oxygen haemoglobin dissociation curve is shifted toward left which of these are correct ? (a) i, ii & iv (b) ii and iv (c) ii, iii & iv (d) iii and iv

TRUEMEN BIOLOGY ENGLISH-Animal Kingdom -ASSERTION AND REASON
  1. [A] : All invertebrates can keep their body temperature constant all t...

    Text Solution

    |

  2. [A] : In Taenia solium , bladder worm is also known as cysticercus . ...

    Text Solution

    |

  3. [A] : Earthworm obtain oxygen for respiration through moist skin . The...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. Assertion: Kraits ar poisonous snakes. Reason: Belly scales are smal...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |