Advertisements
Advertisements
Question
Why is DNA copying an essential part of the process of reproduction?
Solution
DNA copying is an essential part of reproduction as it passes genetic information from parents to offspring. It determines the body design of an individual. The reproducing cells produce a copy of their DNA through some chemical reactions and result in two copies of DNA. The copying of DNA always takes place along with the creation of additional cellular structures. This process is then followed by the division of a cell to form two cells.
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with suitable word :
the process of...........ensures continuity of life on earth.
What is meant by reproduction?
The offsprings formed by asexual reproduction method have greater similarity among themselves because :
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)The offsprings formed by asexual reproduction method have greater similarity among themselves because :
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)
State whether the following statement is true (T) or false (F):
Dogs and cats reproduce from two parents.
Name the factors which take part in this process.
Which of the following types require pollinator but the result is genetically similar to autogamy?
If diploid chromosome number in a flowering plant is 12, then which one of the following will have 6 chromosomes?
Multiple choice question.
In angiosperms, endosperm is formed by/ due to ______
Multiple choice question.
Presence of beard in boys is a _______.
Sporoderm is made up of ______.
Identify the odd one with respect to pollinating agent.
Nebenkern is ______.
What is the use of tablet ‘Saheli’?
Write two types of reproduction in plants.
The plant which propagates with the help of its leaves is ______.
Identify the chromosome number of the endosperm in the following case. In an angiosperm a female plant having 2n = 24 is crossed with a male plant having 2n = 12.
Observe the following figures.
![]() |
![]() |
![]() |
|
(a) | (b) | (c) | (d) |
- Identify the stages (a) to (d) in figure during development of human baby.
- Arrange the stages in correct sequence of development.
- Explain the development that takes place in any one stage.
The statement ‘nothing lives forever, yet life continues’ illustrates the role of ______.
Choose the correct meaning of reproduction.