Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

31.

Which of the following is not correctly matched?

  • Trichomonas vaginalis – Leishmaniasis

  • Glossina palpalis – Sleeping sickness

  • Aedes agypti – Yellow fever

  • Culex pipceins – Filariasis


32.

An occupational lung disease that occurs in humans, among those given below is

  • Dyspnea

  • Anthracosis

  • Atelectasis

  • Cyanosis


33.

Meniere’s disease is associated with

  • Ear

  • Eye

  • Nose

  • Throat


34.

Gonads are derived from

  • Ectoderm

  • Mesoderm

  • Endoderm

  • None of the above


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35.

The number of chromosomes in a primary spermatocyte is

  • Same as in spermatid

  • Same as in spermatogonium

  • Help of that in spermatogonium

  • Same as in secondary spermatocyte


36.

The portion of the endometrium that covers the embryo and is located between the embryo and the uterine cavity is the

  • Decidua basalis

  • Desidua umbilicus

  • Desidua capsularis

  • Deciduas functionalis


37.

Depo-provera refers to

  • Injectible contraceptive

  • Intra uterine device

  • Implant

  • Oral contraceptive


38.

What base is responsible for hot spots for spontaneous pint mutations?

  • Adenine

  • Guanine

  • 5-bromouracil

  • 5-methyl cytosine


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39.

During which geological period of evolution did the greatest diversification of life occurred on the earth?

  • Permian

  • Jurassic

  • Cambrian

  • Ordovician


C.

Cambrian

The Cambrian explosion in the Cambrian period marks the occurrence of greatest diversification on the earth. 

Most major phyla appeared (indicated by fossil study) divergence of modern Metazoan phyla occurred and major diversification of other organisms.

Before this period, most organisms were simple however, this changed after Cambrian period, the diversification rate accelerated and the diversity of life began to resemble that of today.


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40.

Specific radioactive identification of ribosomal RNA can be achieved by using C14 labelled

  • Guanine

  • Uracil

  • thymine

  • Cytocine


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