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"The Living World", • Growth, • Reproduction, mode of…
"The Living World"
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What is Living?
Features of Living Organisms
• Growth
• Reproduction
• Ability to sense environment
• Mount a suitable response come to our mind immediately
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• Growth
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Growth cannot be taken as a defining property of living orgranisms BECAUSE, in living organisms growth is from inside
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• Reproduction
ASEXUAL REPRODUCTION
BUDDING
Fungi multiply and spread easily dueto the millions of asexual spores they produce. In lower organisms like
yeast and hydra, we observe budding
REGENERATION
In Planaria (flat worms), we observe
true regeneration
a fragmented organism regenerates the lost part of
its body and becomes, a new organism.
FRAGMENTATION
The fungi, the filamentous algae,
the protonema of mosses, all easily multiply by fragmentation.
SEXUAL REPRODUCTION
In multicellular organisms, reproduction refers to the production of progeny possessing features more or less similar to those of parents.
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