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NEET Zoology MCQs: Class-XI and Class-XII



NEET Zoology MCQs: Class-XI and Class-XII

Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli?

[class-xi ]

  • High pO2 and Lesser H+ concentration
  • Low pCO2 and High temperature
  • High pO2 and High pCO2
  • High pO2 and Lesser H+ concentration
    • Correct Option: A  [ High pO2 and Lesser H+ concentration ]

    Remark:

Consider the following statements:

A. Annelids are true coelomates
B. Poriferans are pseudocoelomates
C. Aschelminithes are acoelomates
D. Platyhelminthes are pseudocoelomates

Choose the correct answer from the options given below:

[class-xi ]

  • A only
  • B only
  • D only
  • C only
    • Correct Option: A  [ A only ]

    Remark:

Given below are two statements:

Statements I: In the nephron the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.

Statement II: The proximal convoluted tubule is lined by simple columnar brush border epithelium and increases the surface area for reabsorption.

In the light of the above statements, choose the correct answer fropm the options given below:

[class-xi ]

  • Both Statement I and Statement II are false.
  • Both Statement I and Statement II are true
  • Statement I is false but Statement II is true.
  • Statement I is true but Statement II is false.
    • Correct Option: C  [ Statement I is false but Statement II is true. ]

    Remark:

Match List I with List II:

List-I List-II
(A)Common cold (I)Plasmodium
(B)Haemozoin (II)Typhoid
(C)Widal test (III)Rhinoviruses
(D)Allergy (IV)Dust mites
Choose the correct answer form the options given below:

[class-xii ]

  • A-I, B-III, C-II, D-IV
  • A-II, B-IV, C-III, D-I
  • A-IV, B-II, C-III, D-I
  • A-III, B-I, C-II, D-IV
    • Correct Option: D  [ A-III, B-I, C-II, D-IV ]

    Remark:

Choose the correct statement given below regarding juxta medullary nephron.

[class-xi ]

  • Renal corpuscle of juxtamedullary nephron lies in the outer portion of he renal medulla.
  • Juxtamedullary nephrons are located in the columns of Bertini.
  • Juxtamedullary nephrons outnumber the cortical nephtons.
  • Loop of Henle of juxtamedullary nephron runs deep into medulla.
    • Correct Option: D  [ Loop of Henle of juxtamedullary nephron runs deep into medulla. ]

    Remark:

Regarding catalytic cycle of an enzyme action, selecte the correct sequential steps:

A. Substrate enzyme complex formation.
B. Free enzyme ready to bind with another substrate.
C. Release fo products.
D. Chemical bonds of the substrate broken.
E. Substrate bindig to active site.

Choose the correct answer from the options given below:

[class-xi ]

  • A, E, B, D, C
  • E, A, D, C, B
  • E, D, C, B, A
  • B, A, C, D, E
    • Correct Option: A  [ A, E, B, D, C ]

    Remark:

Given below are two statements:

Statement I: Mitochondria and chloroplasts are both double membrane bound organelles.
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared to chloroplast.

In the light of the above statements, choose the most approriate answer from the options given below:

[class-xi ]

  • Both statement I and Statement II are incorrect
  • Both statement I and Statement II are correct.
  • Statement I is incorrect but statement II is correct.
  • Statement I is correct but statement II is incorrect.
    • Correct Option: B  [ Both statement I and Statement II are correct. ]

    Remark:

Match List I with List II:

List-I List-II
(A)P wave (I)Heart muscles are electrically silent.
(B)QRS complex (II)Depolarisation of ventricles
(C)T wave (III)Depolarisation of atria.
(D)T-P gap (IV)Repolarisation of ventricles
Choose the correct answer form the options given below:

[class-xi ]

  • A-III, B-II, C-IV, D-I
  • A-I, B-III, C-IV, D-II
  • A-IV, B-II, C-I, D-III
  • A-II, B-III, C-I, D-IV
    • Correct Option: A  [ A-III, B-II, C-IV, D-I ]

    Remark:

Match List I with List II:

List-I List-II
(A) Unicellular glandular epithelium (I) Salivary glands
(B) Compound epithelium (II) Pancreas
(C) Multicellular glandular epithelium (III) Goblet cells of alimentary canal
(D) Endocrine glandular epithelium (IV) Moist surface of buccal cavity
Choose the correct answer form the options given below:

[class-xi ]

  • A-IV, B-III, C-I, D-II
  • A-II, B-I, C-III, D-IV
  • A-II, B-I, C-IV, D-III
  • A-III, B-IV, C-I, D-II
    • Correct Option: D  [ A-III, B-IV, C-I, D-II ]

    Remark:

The type of conservation in which the threatened species are taken out from their natural habitat and placed in special setting where they can be protected and given special care is called:

[class-xii ]

  • Biodiversity conservation
  • in-situ conservation
  • Sustainable development
  • Semi-conservative method
    • Correct Option: A  [ Biodiversity conservation ]

    Remark:
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