Fill in the blanks `I`,`II`,`III` and `IV` respectively in the given flow chart.
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Fill in the blanks The male and female gametes in the flower are called …………… and …………… respectively.

A student was given three samples containing hydrochloric acid, sodium bicarbonate solution and water in test tubes I, II and III respectively. On dipping a pH paper in them he observed that the colour turned orange in I, blue in II, and green in III. If arranged in increasing order of their pH it would be

Fill in the blanks When crops in the field are given water, it is called……….

Fill in the blanks For a given solution the number of equations that can be formed are ...........

Fill in the blanks A current which flows in the same direction is called _____.

Fill in the blanks in the following table, given that a is the first term, d the common difference and a_n the nth term of the AP: .

Fill in the blanks using the correct word given in brackets :- All squares are………. (similar,congruent) .