121.
When the concentration of water and solutes on either side of the cell membrane is same, the solution is said to be

122.
Water molecules enter plant epidermal cells by

123.
Root pressure is developed in

124.
What process accounts for species diversity?

126.
In cross section each centriole consists of a cylindrical array of how many microtubules?

127.
Which phase's intiation is indicated by the appearance of the chromosomes as thin threads in the nucleus?

128.
In which of these mitosis is missing and the cell divided by binary fission?

129.
Which event occurs during interphase?

130.
The stage of mitosis at which chromatids separate as independent chromosomes is the

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