Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

In which type of reactions related to plant photosynthesis peroxisomes are involved?

  • Glycolate cycle

  • Calvin cycle

  • Bacterial photosynthesis

  • Glyoxylate cycle


42.

'Water vascular' system is found in

  • sea-anemone

  • sea-pen

  • sea-cucumber

  • sea-horse


43.

Lichens are described as indicator of

  • air pollution

  • water pollution

  • soil pollution

  • agriculture productivity


44.

Most abundant mineral of animal body is

  • iron (Fe)

  • sodium (Na)

  • potassium (K)

  • calcium (Ca)


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45.

Retrogressive metamorphosis occurs in

  • Hemichordata

  • Cephalochordata

  • Urochordata

  • Vertebrata


C.

Urochordata

Metamorphosis is a change from the juvenile to adult stage in which larval stage is quite different from the adult stage.

In retrogressive metamorphosis, the larva possesses advanced characters which are lost during the development and the adult is either sedentary or degenerated with primitive characters.

Urochordate adults, being sedentary show degenerative characters, while the free swimming tadpole larva shows advanced chordate characters which are lost during metamorphosis. Parasitic crustaceans, like Sacculina and copepod parasites and stylopids and scale insects (Insecta) also show retrogressive metamorphosis.


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46.

'Organ of Jacobson' helps in

  • touch

  • vision

  • smell

  • hear


47.

Cysticercus stage is formed in

  • Taenia

  • Plasmodium

  • Leishmania

  • Wuchereria


48.

The hormone responsible for 'Fight and Flight' response is

  • adrenalin

  • thyroxin

  • ADH

  • oxytocin


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49.

Which of the following is a catadromous fish?

  • Hilsa sp.

  • Mystus sp.

  • Anguilla sp.

  • Channa sp.


50.

Which of the following animal belongs to class-Crustacea?

  • Cockroach

  • Cyclops

  • Grasshopper

  • Mosquito


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