Multiple Choice Questions

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Cleistogamous flowers are

  • bisexual flowers which remain opened

  • bisexual flowers which remain closed

  • open female flower

  • open male flower


B.

bisexual flowers which remain closed

Cleistogamous flowers are inconspicuous, a petalous flowers. Cleistogamy or automatic self-pollination describes the trait of certain plants that are bisexual and remain closed throughout their life. They propagate by using non-opening self-pollinating flowers, i.e., they fertilise themselves by using stigma and pollen of same flower e.g., peas, peanuts, beans, etc.


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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


Proteins helping in kinetocore formation of yeast are

  • CBF2 and Kar3 P

  • CBF2 and CBF3

  • CBF3 and Kar3 P

  • CBF2, CBF3 and Kar3 P


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%


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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Cross-pollination through insect agent is called

  • anthropophily

  • malacophily

  • entemophily

  • ornithophily


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

  • Costal cartilage

  • Hyaline cartilage

  • White fibrous cartilage

  • Yellow elastic cartilage


Pseudopodia are produced by

  • plasma cell

  • mast cell

  • adipose cell

  • fibroblast cell


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


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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