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प्रश्न
Why should gametes be produced by meiosis during sexual reproduction?
उत्तर
Meiosis is important as it produces gametes i.e., male or female germ cells. During meiosis a germ cell or gamete divides to make four new sex cells. As a result of fertilization two gamates join together to form an egg or zygote. Therefore only if gametes are produced, fertilization can take place
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संबंधित प्रश्न
Given below are three diagrammatic sketches (A, B and C) of one and the same particular phase during mitotic type of cell division.
- Identify the phase.
- What is the diploid number of chromosomes shown in them?
- Identify whether these are animal cells or plant cells? Give reasons.
- Which of these is/are shown in the correct direction?
- Only A
- Only B
- Only A and C
- All the three
How many chromosomes will each daughter cell have after the completion of the above division? 
How many chromosomes will each daughter cell have after the completion of the above division?
Given below is a diagram representing a stage during the mitotic cell division. Study [5] thediagram and answer the following questions:
Name of the nitrogenous bases.
Given below is a diagram representing a stage during mitotic cell division. Study it carefully and answer the question that follow.
Draw a duplicated chromosome and label its parts.
Give Reasons for the following
The mitosis is called equational division.
Give Technical Terms
The division which brings about vegetative growth.
Complete the following sentence with appropriate word :
The type of cell division that occurs in the apical meristem of plants is ______.
What type of cell division occurs in the cells of the upper layer of the epidermis, cells of the lining of the gut, and blood cells?
The growth of multicellular organisms is due to
Write briefly the significance of mitosis and meiosis in multicellular organism.
