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NEET - 2024 Previous Year Questions



NEET Biology Previous Year Questions - 2024

Which of the following statement is correct regarding the process of replication in E.coli?

[class-xii ]

  • The DNA dependent RNA polymerase catalyses polymerization in one direction, that is 5' → 3'
  • The DNA dependent DNA polymerase catalyses polymerization in one direction that is 3' → 5'
  • The DNA dependent DNA polymerase catalyses polymerization in 5' → 3' direction.
  • The DNA dependent DNA polymerase catalyses polymerization in 5' → 3' as well as 3' → 5' direction
  • Correct Option: C  [ The DNA dependent DNA polymerase catalyses polymerization in 5' → 3' direction. ]

    Remark: NCERT Page No.90, (Topic-5.4.2 The Machinery and the Enzymes)

In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x(kcalm–2)yr–1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?

[class-xii ]

  • 10x(kcalm–2)yr–1
  • 100x/3x(kcalm–2)yr–1
  • x/10(kcalm–2)yr–1
  • x(kcalm–2)yr–1
  • Correct Option: A  [ 10x(kcalm–2)yr–1 ]

    Remark: NCERT Page No.206, (Topic-12.2 PRODUCTIVITY)

Match List I with List II:

List-I List-II
A. Rose I. Twisted aestivation
B. Pea II. Perigynous flower
C. Cotton III. Drupe
D. Mango IV. Marginal placentation
Choose the correct answer form the options given below:

[class-xi ]

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

    Remark: Rose-NCERT Page No.63, (Topic-5.5 THE FLOWER)
    Pea-NCERT Page No.65, (Topic-5.5.1.4 Gynoecium)
    Cotton-NCERT Page No.63, (Topic- 5.5.1.2 Corolla)
    Mango-NCERT Page No.65, (Topic- 5.6 THE FRUIT)

Match List I with List II:

List-I List-II
A. Robert May I. Species-Area relationship
B. Alexander von Humboldt II. Long term ecosystem experiment using out door plots
C. Paul Ehrlich III. Global species diversity at about 7 million
D. David Tilman IV. Rivet popper hypothesis
Choose the correct answer form the options given below:

[class-xii ]

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

    Remark: Explanation:
    Robert May -NCERT Page No.217.
    Alexander von Humboldt -NCERT Page No.220.
    Paul Ehrlich-NCERT Page No.221.
    David Tilman -NCERT Page No.221.

Read the following statements and choose the set of correct statements:

In the members of Phaeophyceae,

A. Asexual reproduction occurs usually by biflagellate zoospores.
B. Sexual reproduction is by oogamous method only.
C. Stored food is in the form of carbohydrates which is either mannitol or laminarin.
D. The major pigments found are chlorophyll a, c and carotenoids and xanthophyll.
E. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.

Choose the correct answer from the options given below:

[class-xi ]

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

    Remark: Explanation: NCERT Page No.26, (Topic-3.1.2 Phaeophyceae)

Match List I with List II:

List-I List-II
A. Non-medicated IUD I. Multiload 375
B. Copper releasing IUD II. Progestogens
C. Hormone releasing IUD III. Lippes loop
D. Implants IV. LNG-20
Choose the correct answer form the options given below:

[class-xii ]

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

    Remark: Explanation: NCERT Page No.59, (Topic-4.2 POPULATION EXPLOSION AND BIRTH CONTROL)

Given below are two statements:

Statement I: The presence or absence of hymen is not a reliable indicator of virginity.

Statement II: The hymen is torn during the first coitus only.

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

[class-xii ]

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

    Remark: Explanation: NCERT Page No.30, (Topic-2.2 THE FEMALE REPRODUCTIVE SYSTEM)