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General Knowledge :: Biology

  1. When the concentration of water and solutes on either side of the cell membrane is same, the solution is said to be

  2. A.

     Hypertonic

    B.

     Isotonic

    C.

     Hypotonic

    D.

     None of these


  3. Water molecules enter plant epidermal cells by

  4. A.

     Active Transport

    B.

     Translocation

    C.

     Osmosis

    D.

     None of the above


  5. Root pressure is developed in

  6. A.

     Cortex

    B.

     Phloem

    C.

     Xylem

    D.

     Pith


  7. What process accounts for species diversity?

  8. A.

     Predation

    B.

     Mitosis

    C.

     Symbiosis

    D.

     Meiosis


  9. When are chromatids found in a cell?

  10. A.

     Anaphase

    B.

     Metaphase

    C.

     Prophase

    D.

     None of the above


  11. In cross section each centriole consists of a cylindrical array of how many microtubules?

  12. A.

     9

    B.

     8

    C.

     7

    D.

     6


  13. Which phase's intiation is indicated by the appearance of the chromosomes as thin threads in the nucleus?

  14. A.

     Prophase

    B.

     Metaphase

    C.

     Telophase

    D.

     Anaphase


  15. In which of these mitosis is missing and the cell divided by binary fission?

  16. A.

     Prokaryotes

    B.

     Eukaryotes

    C.

     Arthropdes

    D.

     All of these


  17. Which event occurs during interphase?

  18. A.

     Centrioles appear

    B.

     Spindle fibers begin to form

    C.

     The cell grows

    D.

     Centromeres divide


  19. The stage of mitosis at which chromatids separate as independent chromosomes is the

  20. A.

     Prophase

    B.

     Metaphase

    C.

     Anaphase

    D.

     Telophase