Advertisements
Advertisements
प्रश्न
Why should gametes be produced by meiosis during sexual reproduction?
Advertisements
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
APPEARS IN
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
Given below is a diagram representing a stage during the mitotic cell division. Study thediagram and answer the following questions:
Draw a neat, labelled diagram of the stage which follows the one shown in the diagram.
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.
Choose the correct answer:
During mitosis which of the following disintegrate _________
Given below is a diagram representing a stage during mitotic cell division. Study it carefully and answer the question that follow.
Is it a plant cell or an animal cell? Give a reason to support your answer.
Given below is a diagram representing a stage during mitotic cell division. Study it carefully and answer the question that follow.
Name the stage that follows the one shown here. How is that stage identified?
Differentiate between
Centrifugal cytokinesis and Centripetal cytokinesis.
Complete the following sentence with appropriate word :
The type of cell division that occurs in the apical meristem of plants is ______.
Both unicellular and multicellular organisms undergo mitosis. What are the differences, if any, observed in the process between the two?
