Reproduction and Modes of Reproduction

1. • Name: Shaikh Yasmin Rashid Ahmed
• Std:X
• Topic:Reproduction and modes of reproduction

2. ``

4. REPRODUCTION
• All living organisms produce new individual of same species
That is a new, generation of species from an
existing individual

5. SIGNIFICANCE OF REPRODUCTION
• Necessary to maintain the number of individuals of species
• To prevent their extinction

6. Chemical
reactions
DNA
copies

7. parent
Child
identical similar

8. Variation:the changes that occur during the
process of replication or formation of DNA
copy,these changes are known as variation.
DNA copy
minor
changes
Variatio
n
Parent
DNA
Child DNA

9. IMPORTANCE OF
VARIATION:
Imagine the confusion when everybody
arounds you look same.
•Creates Diversity

10. IMPORTANCE OF VARIATION:
•Survival of species

11. n
pairs 2n
2n
2n
2n
2n
Number of
chromosomes
Total number of
chromosomes
Total number of chromosomes in each child
Parent cell
Daughter
cell

12. MODES OF REPRODUCTION:
• Only one parent
• Body cells(somatic
involved
cells)
2n
2n 2n
M
I
T
O
S
I
S
Sexual
reproduction
• Two parents involved
• Reproductive cells(germ cells,
gametes
Asexual
reproduction
n
n
2
n
M
E
I
O
S
I
S

13. 1)BINARY FISSION(PARAMOECIUM)
Parent cell Nucleus
divides
Cytoplasm
divides
Two daughter
cells
ASEXUAL REPRODUCTION:

14. BINARY FISSION IN PARAMOECIUM

15. APPLICATION:

16. EVALUATION:-
A L T Y I K G M
S M Z G H P N K
E A O T O G I F
X L Y E A L D N
U E X J B K D K
A Q W D K A U D
L F V C V C B G
Clues:
Unicellular animal
One of the two
sMeoxdees of
Rreepprroodduuccttiioonn without union of
gTaypmee otefs asexual reproduction

17. THANK YOU