Multiple Choice Questions

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Which one of the following pairs of animal comprises' jawless fishes'

  • Lampreys and eels

  • Mackerels and rohu

  • Lampreys and hag fishes

  • Lampreys and hag fishes


C.

Lampreys and hag fishes

Lampreys and myxine (hagfish) belong to the class- Cyclostomata, group-Agnatha of Vertebrata. Agnatha has mouth without jaws. In these, the mouth is ventral, Suctorial and circular.

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Which one of the following acids is a derivative of carotenoids?

  • Indole butyric acid

  • Indole -3-acetic acid

  • Gibberellic acid

  • Gibberellic acid

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Vegetative propagation in mint occurs by 

  • runner 

  • offset

  • rhizome

  • rhizome

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The kind of tissue that forms the supportive structure in our pinna (external ears) is also found in 

  • vertebrae

  • nails

  • ear ossicles

  • ear ossicles

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Palisade parenchyma is absent in leaves of 

  • sorghum

  • mustard

  • soybean

  • soybean

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The cell junctions called tight, adhering and gap junctions are found in 

  • muscular tissue

  • connective tissue

  • epithelial tissue

  • epithelial tissue

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Guard cell help in

  • protection against grazing

  • transpiration

  • guttation

  • guttation

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What will happen if the stretch receptors of the urinary bladder wall are totally removed?

  • Urine will not collect in the bladder

  • Micturition will continue

  • Urine will continue to collect normally in the bladder

  • Urine will continue to collect normally in the bladder

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Which one of the following is a vascular cryptogam?

  • Equisetum 

  • Ginkgo

  • Marchantia

  • Marchantia

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One of the synthetic auxins is

  • NAA

  • IAA

  • GA

  • GA

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