What is the full form of PPLO ?

PPLO stands for Pleuro Pneumonia Like Organisms.
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Describe disadvantages of multicellularity.

Following are the disadvantages of multicellularity:

1. Certain specialized cells lose the power of division and cannot be replaced if damaged.

2. Some specialized cells lose basic functions.

3. Multicellualr organism have much complex system. 

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What is compartmentalization ?


Cells have numerous membrane bound organelles which divide the cell into different compartments. Each organelle has separate identity within the cell and can perform their functions independently and effciently. For example - the membrane of mitochondria divides it into two compartments one between the inner and outer membrane and the other inside the inner membrane.
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 What is the compositions of chromosomes.

The chromosomes contain DNA, histone proteins, some non-histone proteins and RNA.
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Describe types of cells on the basis of nuclear membrane

There are two types of cells on the basis of nuclear membrane:

1. Prokaryotic cells : They are without nuclear membrane.

2. Eukaryotic cells : They possess nuclear membrane.

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