Gd evng. ♥♥♥♥♥
Tomorrow is my bio tp
On reproduction in organism
Tips plz. ♥
Answers
Reproduction:
(1) Reproduction is defined as a biological process in which every living organism give rise to new organisms similar to themselves.
(2) Basic features of reproduction:
(i) Replication of DNA
(ii) Cell division (only mitotic, or both mitotic and meiotic)
(iii) Formation of reproductive bodies or units.
(iv) Development of reproductive bodies into offsprings.
Difference between Asexual and Sexual Reproduction
S.No.
Asexual Reproduction
Sexual Reproduction
1)
Offsprings are produced by single parents.
Involvement of single or two individual.
2)
New individual develops from one cell or a vegetative body part of one parent.
New individual develops from zygote or fusion product of two gametes, which may or may not be produced by two parents.
3)
Offsprings are genetically identical to their parents.
The offsprings are not genetically identical with their parents.
4)
Involves only mitotic divisions.
Involves meiosis at one or the other stage.
5)
It does not require the formation of sex organs.
Formation of sex organs is a pre-requisite for sexual reproduction.
6)
It does not introduce variability. Hence has no evolutionary importance.
It introduces variability and is, hence of evolutionary importance.
Few tips and tricks to get good marks:
1) First of all, refer to the small notes you have made during class.
2) Practise all the diagrams
3) Remember the functions and structure of almost everything as they are the main points in Bio.
4) Revise questions repeatedly.
5) Have a good night's sleep so that you won't feel sleepy in exam
6) Last but not the least, have faith in yourself.
Hope it helps you!!
All the Best for your exam (^_^)