Important Questions of Biology General Knowledge | Zigya

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11.

The acidic semidigested food, coming out of the stomach is neutralized by

  • pancreatic juice

  • duodenal secretion

  • large intestine secretion

  • bile juice


12.

The oxygenated blood from the lungs is received by the

  • left auricle

  • left ventricle

  • right auricle

  • right ventricle


13.

The oxygen evolved during photosynthesis comes from splitting of

  • water

  • carbon dioxide

  • oxygen

  • light


14.

Which one of the following depicts the correct circuit of a reflex arc?

  • Effector - sensory neuron - spinal cord - motor neuron - receptor

  • Receptor - sensory neuron - spinal cord - motor neuron - effector

  • Receptor - sensory neuron - brain - motor neuron - effector

  • Sensory neuron - receptor - brain - effector - motor neuron


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15.

If one set of chromosomes for a given plant is represented as N; in case of double fertilization, the zygote and the endosperm nucleus of a diploid plant would have how many sets of chromosomes respectively?

  • N and 2 N

  • 2 N and 2 N

  • N and 3 N

  • 2 N and 3 N


16.

AIDS is caused by a virus whose genetic material is:

  • single stranded circular DNA

  • double stranded DNA

  • single stranded RNA

  • double stranded RNA


17.

Which one of the following is an organelle that is NOT found in prokaryotic cells?

  • Cell wall

  • Mitochondria

  • Plasma membrane

  • Ribosome


18.

Which one of the following parts of body does NOT take part in the process of breathing?

  • Bronchi

  • Bowman's capsule

  • Diaphragm

  • Trachea


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19.

Which one of the following statements about classification of plants is correct?

  • Thallophytes have well differentiated body design

  • Funaria is a fungus

  • All Pteridophytes are Phanerogams

  • Vascular system is not found among Bryophytes


20.

Which one of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?

  • Phylum - Class - Order - Family - Genus

  • Phylum - Class - Family - Order - Genus

  • Family - Order - Class - Species - Genus

  • Class - Family - Order - Species - Genus


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