Page 117 - Science Class 07
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Reproduction
• Asexual Reproduc on • Ar ficial Propaga on • Sexual Reproduc on
• Pollina on • Fer liza on • Dispersal of Seeds
• Germina on of a Seed
How do you think genera ons con nue on the divided by itself and reproduce its offspring.
earth? How do dogs give birth to puppies? It takes place as follows:
More importantly, how did you get your life?
Binary Fission
Yes! This is the process of reproduc on.
This way of reproduc on is used by unicellular
Reproduc on is a life process which enables an organisms (amoeba, bacteria, etc). The parent
organism to reproduce its own offspring. Thus, cell divides its body into two cells and each of
they con nue their species without ex nc on. them grows to the size of the parent cell. This
Reproduc on can take place by the par ci- process goes on and the species con nue to
pa on of a single parent or two parents. exist. The word fission means division.
Reproduc on is a must for every species to
con nue its existence. This process is carried
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out in several ways. Some living beings produce
1 2 3
their kind from their bodies while other lay
eggs to reproduce. Some living beings like the Binary Fission in Bacteria
amoeba split into two to produce their kind. But some mes, a protec ve cover develops
As for plants, they grow from seeds that around the cell which gets divided inside it
possess life in the dormant state. Broadly many mes. This cover is called cyst and when
speaking, reproduc on falls into two classes. it breaks, a number of cells are released
together. These cells are called daughter-cells
v Asexual reproduc on
while the fission is called mul ple fission.
v Sexual reproduc on
Budding
ASEXUAL REPRODUCTION
Some organisms like yeast grow small outgrowth
A type of reproduc on where a single parent is
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