Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

What type of cartilaginous tissue is found in the inter-vertebral discs?

  • Costal cartilage

  • Hyaline cartilage

  • White fibrous cartilage

  • Yellow elastic cartilage


42.

Which of the following statements are true for 'Motor cortex'?

I. It is located in the frontal lobe of cerebral cortex.

II It contains pyramidal cells.

III. It is responsible for all visual functions.

IV. It is essential for our thought processes.

V. It stimulates wakefulness.

VI. It regulates voluntary muscular movements.

  • I, II, III and V

  • II, III, IV and V

  • II, IV, V and VI

  • I, II, IV and VI


43.

Identify the correct statements in relation to C4 photosynthesis.

  • Kranz anatomy is an essential feature for C4 plants

  • C4 plants have higher water use efficiency than C3 plants

  • Photorespiration can be minimised when C3 pathway is in operation

  • Conversion of oxaloacetate to malate occurs in the bundle sheath cells


44.

Which of the following factor(s) increase blood pressure?

  • Increase of cardiac output

  • Constriction of blood vessel

  • Activation of parasympathetic nerve

  • Increase of blood volume


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45.

Pseudopodia are produced by

  • plasma cell

  • mast cell

  • adipose cell

  • fibroblast cell


46.

Proteins helping in kinetocore formation of yeast are

  • CBF2 and Kar3 P

  • CBF2 and CBF3

  • CBF3 and Kar3 P

  • CBF2, CBF3 and Kar3 P


47.

The frequency of crossing-over occurring between two genes located on the same chromosome depends on

  • length of the chromosome

  • position of the centromere

  • activities of two genes

  • distance between two genes


48.

Cross-pollination through insect agent is called

  • anthropophily

  • malacophily

  • entemophily

  • ornithophily


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49.

Cleistogamous flowers are

  • bisexual flowers which remain opened

  • bisexual flowers which remain closed

  • open female flower

  • open male flower


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50.

Anish is having colour blindness and married to Sheela, who is not colourblind. What is the chance that their son will have the disease?

  • 100%

  • 50%

  • 25%

  • 0%


D.

0%

Colour blindness is a sex-linked recessive disorder, which results in defects in either red or green cone of an eye which ultimately leads to the failure in discriminating between red and green colour. The gene for colour blindness is located on X-chromosome.

If a colourblind man marries a normal women the chances for their son to be colourblind is 0% because son will receive X-chromosome from his mother (who is not colourblind) and Y from the father (as gene of colour blindness is present on X, so Y chromosome is not affected at all). Thus, there is no chance for their son to be affected. Infact their girl child (daughter) will be the carrier of the disease.


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