Multiple Choice Questions

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In oogamy, fertilization involves :

  • a small non- motile female gamete and a large motile male gamete

  • a large motile female gamete and a small non-motile male gamete

  • a large non- motile female gamete and a small motile male gamete

  • a large non-motile female gamete and a small non-motile male gamete


C.

a large non- motile female gamete and a small motile male gamete

Oogamous type of, sexual reproduction involves the fusion of two dissimilar gametes. The male gamete is usually motile and smaller whereas the female gamete, is usually non-motile and contains food store, which is retained by the parent.


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In Musa, inflorescence is :

  • spadix

  • corymb

  • capitulum

  • polychasial cyme


Which of the following is a viral disease in silkworm ?

  • Flacherie

  • Grasserie

  • Muscardine

  • Pebrine


A flower characterised by monadelphous tubular stamens belongs to :

  • Solanaceae

  • Liliaceae

  • Malvaceae

  • Brassicaceae


Which of the following is not the example of marine fishes ?

  • Labeo

  • Mugil

  • Hilsa

  • Sardines


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Neurohypophysis secretes

  • ADH and oxytocin

  • oxytocin and estrogen

  • vasopressin and GH

  • vasopressin and estrogen


Pancreatic duct of a healthy dog is blocked. Which of the functions of pancreas will not be affected ?

  • Protein digestion

  • Carbohydrate digestion

  • Neutralization of chyme

  • Maintenance of normal blood sugar level


Physiologically active thyroxine exists in which of the following form ?

  • Unbound

  • Bound to albumin

  • Bound to globulin

  • All of the above


The most accepted theory of ageing is :

  • less RBC in blood

  • thymus gland becomes non-functional

  • brain cells die with ageing

  • all of the above


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In angiosperms, triple fusion results in the formation of:

  • zygotic nucleus

  • polar nucleus

  • secondary nucleus

  • primary endosperm nucleus