Biology
In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen?

Arthropods
Echinodermata
Annelida
Chordata

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Biology
Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?

All are incorrect
Character of semi permeable membrane is not given
Exact concentration of solution is not given
The flow of solution is not possible through semi permeable membrane

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Biology
Which of the following is not true of colour blindness?

Red-green colour blindness is the most common type of colour blindness
A colour blind person cannot see any colours
For some people, it might be difficult to recognize colours of traffic lights and signs
Colour blind people learn to rely on shapes, patterns, and positions of signs and signals

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