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


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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


D.

CBF2, CBF3 and Kar3 P

The kinetochore assembles on the centromere and links the chromosome to microtubule polymers from the mitotic spindle during mitosis and meiosis. Its proteins also help to hold the sister chromatids together and play a role in chromosome editing. CBF2, CBF3 and Kar3P are the kinetocore proteins used in yeast. These three are the proteins which are commonly called as factors. These proteins helps in the binding of the chromosome to the microtubules by attachment with different complexes.


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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


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%


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