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Questions
“Cell division is a type of reproduction in unicellular organism.” Justify.
Cell division is a type of reproduction in unicellular organisms. Comment.
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Solution
In unicellular organisms all the important functions are carried out by the single cell because they lack all cellular organelles. The two types of reproduction, i.e., sexual and asexual, need the involvement of many organelles and biomolecules. Hence, these modes of reproduction are absent in prokaryotes. Unicellular organisms are the simplest organisms. Therefore, cell division acts as the mode of reproduction and results in the production of daughter cells.
RELATED QUESTIONS
What is pollination?
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
Mention the function of Anther.
What part is played by stamens and carpels in reproduction?
The students of a class were asked by the teacher to study the different parts of an embryo of an angiosperm. Given below are the essential steps for the experiment :
A. Soak the seeds in plain water and keep them overnight.
B. Cut open the soaked seed and observe its different parts.
C. Take some healthy seeds in a petri-dish.
D. Drain the excess water, cover the seeds with a wet cotton cloth and leave them as it is for a day.
The correct sequence of these steps is
(a) C, A, D, B
(b) C, D, A, B
(c) A, C, D, B
(d) A, C, B, D
Bisexual : Hibiscus : : Unisexual : ___________
What does germination mean?
The seed that contains the future plant is called the ______
Which among the following statements are true for unisexual flowers?
- They possess both stamen and pistil
- They possess either stamen or pistil
- They exhibit cross pollination
- Unisexual flowers possessing only stamens cannot produce fruits
Double fertilization means ______.
