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NEET Zoology MCQs: Class-XI and Class-XII



NEET Zoology MCQs: Class-XI and Class-XII

In the taxonomic categories which hierarchical arrangement in ascending order is correct in case of animals?

[class-xi ]

  • Kingdom, Phylum, Class, Order, Family, Genus, Species
  • Kingdom, Class, Phylum, Family, Order, Genus, Species
  • Kingdom, Order, Class, Phylum, Family, Genus, Species
  • Kingdom, Order, Phylum, Class, Family, Genus, Species
  • Correct Option: A  [ Kingdom, Phylum, Class, Order, Family, Genus, Species ]

    Remark:

In which of the following animals, digestive tract has additional chambers like crop and gizzard?

[class-xi ]

  • Corvus, Columba, Chameleon
  • Bufo, Balaenoptera, Bangarus
  • Catla ,Columba ,Crocodilus
  • Pavo, Psittacula, Corvus
  • Correct Option: D  [ Pavo, Psittacula, Corvus ]

    Remark:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): All vertebrates are chordates but all chordates are not vertebrates.
Reason (R): Notochord is replaced by vertebral column in the adult vertebrates.
In the light of the above statements, choose the most appropriate answer from the option given below :

[class-xi ]

  • Both (A) and (R) are correct and (R) is the correct explanation of (A)
  • Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  • (A) is correct but (R) is not correct
  • (A) is not correct but (R) is correct
  • Correct Option: B  [ Both (A) and (R) are correct but (R) is not the correct explanation of (A) ]

    Remark:

Which of the following is present between the adjacent bones of the vertebral column?

[class-xi ]

  • Intercalated discs
  • Cartilage
  • Areolar tissue
  • Smooth muscle
  • Correct Option: B  [ Cartilage ]

    Remark:

Which of the following is not a connective tissue?

[class-xi ]

  • Blood
  • Adipose tissue
  • Cartilage
  • Neuroglia
  • Correct Option: D  [ Neuroglia ]

    Remark:

Tegmina in cockroach, arises from

[class-xi ]

  • Prothorax
  • Mesothorax
  • Metathorax
  • Prothorax and Mesothorax
  • Correct Option: B  [ Mesothorax ]

    Remark:

Given below are two statements:
Statement I: Mycoplasma can pass through less than 1 micron filter size.
Statement II: Mycoplasma are bacteria with cell wall.
In the light of the above statements, choose the most appropriate answer from the options given below

[class-xi ]

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

    Remark:

Select the incorrect statement with reference to mitosis:

[class-xi ]

  • All the chromosomes lie at the equator at metaphase
  • Spindle fibres attach to centromere of chromosomes
  • Chromosomes decondense at telophase
  • Splitting of centromere occurs at anaphase
  • Correct Option: B  [ Spindle fibres attach to centromere of chromosomes ]

    Remark:

Regarding Meiosis, which of the statements is incorrect?

[class-xi ]

  • DNA replication occurs in S phase of Meiosis-II
  • Pairing of homologous chromosomes and recombination occurs in Meiosis-I
  • Four haploid cells are formed at the end of Meiosis-II
  • There are two stages in Meiosis, Meiosis-I and II
  • Correct Option: A  [ DNA replication occurs in S phase of Meiosis-II ]

    Remark:

Which of the following functions is not performed by secretions from salivary glands?

[class-xi ]

  • Digestion of complex carbohydrates
  • Lubrication of oral cavity
  • Digestion of disaccharides
  • Control bacterial population in mouth
  • Correct Option: C  [ Digestion of disaccharides ]

    Remark: