Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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41.

Monarch butterfly escapes from predators by

  • foul smell

  • bitter taste

  • colour combination

  • rough skin


B.

bitter taste

Monarch butterfly escapes from predators because of its bitter taste. Viceroy butterfly (Basilarchia archippus) mimics monarch butterfly to escape from predators.


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42.

What is the characteristic of tapetum

  • It does not store food.

  • It is multi-nucleated.

  • It is multi-layered structure.

  • It nourishes the megaspore


43.

In vehicles, catalytic converters are used

  • to increase mileage of vehicles

  • to convert CO2 into carbonates

  • to increase the efficiency of lead mixed petrol

  • to convert CO to CO2


44.

Which of the following is best method of germplasm conservation

  • Herbarium

  • Botanical garden

  • Seed bank

  • Zoological park


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45.

Which one of the following options is a correct match of phenomenon and its explanation

  • Reverse Transcription PCR - Many copies of a DNA sequence.

  • Central dogma - RNA > DNA > Protein > RNA.

  • RNA silencing - Use of ds-RNA to stop the expression of ss-RNA.

  • Transcription- Process of formation of RNA & proteins.


46.

Which of the following is correct

  • Henking discovered the small Y-chromosome.

  • Drosophila also shows XX-XY sex determination like human.

  • Birds have ZZ-ZW sex determination, where females are ZZ & males are ZW.

  • Grasshoppers show XX-XY sex determination


47.

Which of the following statements is correct

  • Monkey, apes and humans exhibit estrous cycle.

  • Urine is pale yellow and slightly alkaline.

  • Lots of enzymes are present in bile juice.

  • Ovulation in humans is spontaneous.


48.

Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters

  • Absence of limbs in snakes

  • Melanization in peppered moth

  • Presence of webbed toes in aquatic birds

  • Lack of pigment in cave-dwelling animals


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49.

Assertion: Amount of organic biodegradable compounds present in water is measured by the BOD of that water.

Reason: During biodegradation of biodegradable organic compounds, oxygen is released by bacteria

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


50.

In assisted reproductive technology where gametes have been fertilized in vitro, which of the following is practicable for embryo transplantation in Fallopian tube

  • Only embryo up to 8 blastomeres if zygote is not transplanted.

  • Only zygote is transplanted not embryo

  • Either embryo or zygote with 8 blastomere phase transplanted

  • Morulla with 8-24 celled stage is transplanted in Fallopian tube.


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