Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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51.

In rabbit, head of epididymis present at the head of the testis is called

  • vas deferens

  • cauda epididymis

  • gubernaculum

  • caput epididymis


D.

caput epididymis

In rabbit head of epididymic present at the head of the testis is called caput epididymis.

Epididymis differentiated into smaller posterictir enlarged part is called caud epididymis.

Gubernaculum is fibro muscular mesodermal tissue which helps in positioning the testes within the scrotal sac.


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52.

The embryo at 16 celled stage is known as

  • morula

  • gastrula

  • blastula

  • blastomere


53.

Ozone depletion in stratosphere would result in

  • forest fires

  • global warming

  • skin cancer incidence

  • None of the above


54.

Which of the following is a test cross ?

  • Tt x tt

  • TT x tt

  • Tt x Tt

  • tt x tt


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55.

1 : 2 : 1 phenotypic and genotypic ratio is found in

  • complementary genes

  • blending inheritance

  • multiple alleles

  • pseudo alleles


56.

Stop codons are

  • AUG, GUG

  • UAA, UGA, UAG

  • UAC, UGG

  • AGU, AGA, UAC


57. Foolish seedling disease of rice in Japan was caused by
  • the deficiency of nitrogen

  • a bacterium

  • a fungus

  • a virus


58.

Jumping genes in maize were discovered by

  • Hugo de Vries

  • Barbara McClintock

  • TH Morgan

  • Mendel


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59.

DNA multiplication is called

  • translation

  • replication

  • transduction

  • transcription


60.

Cleavage polyembryony occurs in

  • Pinus

  • Mini Cycas

  • Cycas

  • Ephedra


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