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A tumbler garden
Grow several kinds of seeds in 'tumbler gardens'. Every pupil might grow a tumbler garden of his own and keep a day by day pictorial record of the progress of the seedlings.
To make a tumbler garden cut a rectangular piece of blotter and fall it inside a drinking glass. Fill the centre of the glass with peat moss, cotton, excelsior, sawdust or some same material. Push a few seeds among the outside of the glass and the blotter. Keep a little water in the bottom of the glass.
Explain Metameric in detail. A body plan which consists of a series of identical units, metameres, repeated down longitudinal axis of the animal. Every metamere contains identi
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