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 Multiple Choice QuestionsMultiple Choice Questions

21.

Noncleidoic eggs occur in

  • birds

  • fish

  • reptiles

  • platypus


22.

Division in a bacterial cell is carried out through

  • multiple fission

  • binary fission

  • budding

  • plasmotomy


23.

Which of the following two hormones are essential for induced breeding of fishes?

  • TSH and ACTH

  • Oestrogen and progesterone

  • FSH and LH

  • Vasopressin and oxytocin


24.

One micrometer is equal to

  • 0.0001 mm

  • 0.001 mm

  • 0.01 mm

  • 0.00001 mm


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25.

Product of sexual reproduction generally generates

  • longer viability of seeds

  • prolonged dormancy

  • new genetic combination leading to variation

  • large biomass


26.

Which of the following processes was discovered by Lederberg and Tatum (1946)?

  • Transduction

  • Transformation

  • Asexual reproduction

  • Conjugation


27.

The component of bacteria that retains the crystal violet stain during Gram staining is

  • O- antigen

  • lipopolysaccharide

  • peptidoglycan

  • cytoplasmic membrane


28.

Neoteny refers to

  • development of gonads

  • moulting

  • metamorphosis

  • retention of larval traits in the adult body


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29.

Select the correct statements from the following regarding asexual reproduction.

I. It is slower than sexual reproduction.

II. It involve a single parent.

III. It produces progeny that are genetically identical with the parent.

IV. Clones are the progeny of asexual reproduction

  • I, II, III, IV

  • I, II, IV

  • I, II, III

  • II, III, IV


30.

Multiplication of genetically identical copies of a cultiver by asexual reproduction is known as

  • aclonal propagation

  • clonal propagation

  • vegetative propagation

  • polyclonal propagation


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