Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Few important characteristics of Meiosis are:
(i) Meiosis occurs in germ cells only.
(ii) It results in the formation of gametes.
(iii) Chromosome number of the parent cell is halved.
(iv) Daughter cells differ from the parent cell.
APPEARS IN
संबंधित प्रश्न
For formation of plasma membrane, ______ molecules are necessary.
With the help of suitable diagrams, explain the five stages of prophase-I of meiosis.
Fill in the blank:
______ takes place in body cells resulting in growth and development.
Fill in the blank:
______ is the indirect cell division.
Choose the correct answer:
Nuclear membrane reappears in ____________
The figure below shows a certain stage of mitosis:
(i) Name the stage,
(ii) Label the parts 1 to 4
(iii) How many chromosomes are shown here?
Draw a labeled schematic representation of mitosis cell division.
Complete the following sentence with appropriate word :
______means the splitting of the nucleus.
Complete the following sentence with appropriate word :
Colchicine arrests cell division at __________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The alkaloid colchicine inhibits the formation of the mitotic spindle.
Multiple Choice Question:
Karyokinesis is the division of
Multiple Choice Question:
The nuclear membrane and nucleolus become indistinguishable during
Write the functional activity of the following structure:
Colchicine
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the terms in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| (i) Anaphase | (a) Chromosomes become arranged in a horizontal plane at the equator. |
| (ii) Prophase | (b) Daughter chromosomes move to opposite poles of the spindle. |
| (iii) Telophase | (c) Chromosomes become visible as fine, long threads. |
| (iv) Metaphase | (d) Chromosomes lose their distinctiveness and gradually become transformed into chromatin network. |
In which stage of mitosis the chromosomes align in an equatorial plate? How?
Give the sequence of the events occurring during the prophase of mitosis.
Identify the stage of mitosis from the below picture. List the chromosomal events in this stage.
