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General Knowledge :: Biology

  1. In plants, exchange of gases takes place through

  2. A.

     Stomata

    B.

     Palisade tissue

    C.

     Spongy tissue

    D.

     Mid rib


  3. The numerous minute pores in the epidermis of a leaf are called

  4. A.

     Stomata

    B.

     Lenticels

    C.

     Hydathodes

    D.

     Perforation


  5. Stomata helps in

  6. A.

     Exchange of gases

    B.

     Exchange of lipids

    C.

     Exchange of water

    D.

     Exchange of proteins


  7. Release of water from plants as water droplets is known as

  8. A.

     Root pressure

    B.

     Transpiration

    C.

     Osmotic pressure

    D.

     Guttation


  9. Stomata open at night in

  10. A.

     CAM plants

    B.

     C3 plants

    C.

     C4 plants

    D.

     Succulent plants


  11. Rate of transpiration can be measured by

  12. A.

     Ganong's potometer

    B.

     Auxanometer

    C.

     Respirometer

    D.

     Porometer