Fragmentation


 
 
Concept Explanation
 

Fragmentation

Fragmentation: It is found in algae like spirogyra, fucus. In this process adult organism breaks up into two or more pieces called fragments. Each fragment grows up to become a new plant.

Experiment of Fragmentation: Obtain some pond water. You may see green filamentous structures floating in it. Take some of these structures on a slide. Put a drop of glycerine on them and cover them with a coverslip. Observe under a microscope. The green filamentous structures you see are an alga named Spirogyra, which grows in ponds, ditches and springs.

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Sample Questions
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Question : 1

What is the reason behind spreading of slimy green patches in the ponds?

Right Option : C
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Question : 2
Column - IColumn - II
A. BuddingP. Wasps
B. ParthenogenesisQ. Planaria
C. RegenerationR. Hydra
D. FramentationS. Yeast
 T. Ants
Right Option : B
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Explanation
Question : 3

What form of reproduction is at work when part of the parent plant breaks off to form new plants?

Right Option : D
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Explanation
 
 
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