Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

Sugarcane show high efficiency of CO2 fixation because of :

  • Calvin cycle

  • Hatch and Slack cycle

  • TCA cycle

  • greater sunlight


42.

The plant ash is an indication of :

  • organic matter of plant

  • waste product

  • mineral salts absorbed by plants

  • none of these


43.

Which of the following fungi is found useful in the biological control of plant disease ?

  • Penicillium notatum

  • Phytophthora parasitica

  • Mucor mucido

  • Trichoderma viridae


44.

Which is synthesized in G1 phase ?

  • DNA polymerase

  • Histones

  • Nucleolar DNA

  • Tubulin protein


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45.

Which of the following plant yields oil and fibre both ?

  • Cocos nucifera

  • Eucalyptus

  • Brassica campestris

  • Euphorbia hirta


46.

Capitulum inflorescence is found in :

  • Compositae (Asteraceae)

  • Cruciferae (Brassicaceae)

  • Solanaceae

  • Malvaceae


47.

Which of the following organs is not involved in the elicitation of immune response?

  • Brain

  • Lymph nodes

  • Spleen

  • Thymus


48.

Fever in malaria is due to :

  • entry of sporozoites into blood capillaries

  • entry of merozoites into liver cells

  • release of merozoites from red blood cells

  • entry of cryptomerozoites into red blood cells


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49.

The origin of kidney and ureter in Rana tigrina is :

  • all mesodermal

  • all endodermal

  • ectodermal and mesodermal

  • mesodermal and endodermal


A.

all mesodermal

Kidney and ureter in Rana tigrina is developed from mesodermal layer.

Embryonic cells differentiate at an early stage and form an outer layer of cells, the ectoderm and an inner layer the endoderm. At the later stage, the mesoderm is formed and these three germ layers give rise to all the tissues of the developing embryo.


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50.

Which of the following is not a case of epimorphosis ?

  • Formation of sperms from small clumps of cells

  • Regeneration of tail in a lizard

  • Replacement of severed arm in starfish

  • Replacement of limb in salamander


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