Multiple Choice Questions

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Cross-pollination through insect agent is called

  • anthropophily

  • malacophily

  • entemophily

  • ornithophily


C.

entemophily

Pollination is the phenomenon of transfer of pollen grains from the anther of the stamen to the stigma of the carpel/pistil of a flower. Entomophily is a type of pollination that takes place with the help of insects. Anthropophily is the pollination by humans (often artificial pollination using hybridisation techniques, etc). Malcophily is the pollination by snails. Ornithophily or bird pollination is the pollination of flowering plants by birds. 


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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


Proteins helping in kinetocore formation of yeast are

  • CBF2 and Kar3 P

  • CBF2 and CBF3

  • CBF3 and Kar3 P

  • CBF2, CBF3 and Kar3 P


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

  • Costal cartilage

  • Hyaline cartilage

  • White fibrous cartilage

  • Yellow elastic cartilage


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


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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


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%


Cleistogamous flowers are

  • bisexual flowers which remain opened

  • bisexual flowers which remain closed

  • open female flower

  • open male flower


Pseudopodia are produced by

  • plasma cell

  • mast cell

  • adipose cell

  • fibroblast cell


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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