Management of Natural Resources — Science STD 10 — Question

The part of eye sensitive to light is _____.

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Iodine turns blue-black on reacting with _________.

The union of a sperm nucleus with an egg nucleus is known as ________ and results in a _______ egg.

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Grass →____________→Human

Tiffin boxes are electroplated with ________ but car bumpers are electroplated with ________ to protect them from rusting.

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The neuron which carries a message for action to a muscle or gland is known as a __________.

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When a ray of light goes from air into a clear material, you see the ray bend. How much the ray bends is determined by the ___________ of the material.

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Pesticides enter the food chain at the ______________ level.

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Most of the refraction of light rays entering the eye occurs at the outer surface of the _____.

The extracellular fluid which always flows from body tissues to the heart is called _________.