Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Which of the following are found in extreme saline
conditions?

  • Archaebacteria

  • Eubacteria

  • Cyanobacteria

  • Cyanobacteria

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2.

Select the mismatch :

  • Frankia – Alnus

  • Rhodospirillum – Mycorrhiza

  • Anabaena – Nitrogen fixer

  • Anabaena – Nitrogen fixer

3009 Views

3.

Which of the following is made up of dead cells?

  • Xylem parenchyma

  • Collenchyma

  • Phellem

  • Phellem

3388 Views

4.

Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?

  • Argentaffin cells

  • Paneth cells

  • Zymogen cells

  • Zymogen cells

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5.

Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?

(a) They do not need to reproduce
(b) They are somatic cells
(c) They do not metabolize
(d) All their internal space is available for oxygen
transport

  • Only (d)

  • Only (a)

  • (a), (c) and (d)

  • (a), (c) and (d)

2693 Views

6.

The hepatic portal vein drains blood to liver from

  • Heart

  • Stomach

  • Kidneys

  • Kidneys

3626 Views

7.

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

  • Bacillus

  • Pseudomonas

  • Mycoplasma

  • Mycoplasma

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8.

Which of the following options gives the correct sequence of events during mitosis?

  • Condensation - nuclear membrane disassembly
    - crossing over - segregation - telophase

  • Condensation - nuclear membrane disassembly
    -arrangement at equator - centromere
    division - segregation - telophase

  • Condensation - crossing over - nuclear
    membrane disassembly - segregation -
    telophase

  • Condensation - crossing over - nuclear
    membrane disassembly - segregation -
    telophase


B.

Condensation - nuclear membrane disassembly
-arrangement at equator - centromere
division - segregation - telophase

The correct sequence of events during mitosis would
be as follows
(i) Condensation of DNA so that chromosomes become visible occurs during early to mid-prophase.
(ii) Nuclear membrane disassembly begins at late prophase or transition to metaphase.
(iii) Arrangement of chromosomes at equator occurs during metaphase, called congression.
(iv) Centromere division or splitting occurs during anaphase forming daughter chromosomes.

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9.

Which one of the following statements is correct with reference to enzymes?

  • Apoenzyme = Holoenzyme + Coenzyme

  • Holoenzyme = Apoenzyme + Coenzyme

  • Coenzyme = Apoenzyme + Holoenzyme

  • Coenzyme = Apoenzyme + Holoenzyme

2207 Views

10.

A temporary endocrine gland in the human body is

  • Pineal gland

  • Corpus cardiacum

  • Corpus luteum

  • Corpus luteum

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