①
Formation of new life from pre-
existing life is called Reproduction .
It is essential for : -
→
Replacement of dead organisms.
→ continuation of life on earth .
Mainly there are two types of reproduction -
asexual and sexual .
# DNA (Deoxyribonucleic Acid) :
-
The individuals produced by reproduction are similar to each other and their
parents .
This similarity occurs because of DNA .
Importance of DNA copying :
→ Maintenance of body design.
→
Transfer of traits.
→ Variation are introduced at the time of DNA copying.
Importance of variation :
Variation ensures species can survive during unfavourable conditions. .
forego.
If
there were a population of bacteria living in temperature water ,
and the temp.
rises suddenly . Most of the bacteria would die but few variants resistant to
heat would survive and grow further.
ASEXUAL REPRODUCTION
when offspring is produced by single parent with or without the
involvement of gamete formation.
+ganism 's reproductive cells or 4%4416 reproduction #
Modes of A sexual Reproduction :
zit ziti at t6#l L . fission
2. fragmentation
3.
Regeneration
4 .
Budding
5. vegetative propagation
6 .
Spore formation .
Fission
↳ A unicellular organism ,
like bacteria splits into 2 or more
organisms .
Generally ,
ft is of two types -
binary and multiple fission.
Binary fission : In Binary fission, organisms split into 2 new organism under specific condition.
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