THESE ARE ACTUAL EXCERPTS FROM STUDENT SCIENCE EXAM PAPERS:

Charles Darwin was a naturalist who wrote the organ of the species.

Benjamin Franklin produced electricity by rubbing cats backwards.

Three kinds of blood vessels are arteries, vanes and caterpillers.

The dodo is a bird that is almost decent by now.

To remove air from a flask, fill it with water, tip the water out, and put 
the cork in quick before the air can get back in.

The process of turning steam back into water again is called conversation.

A magnet is something you find crawling all over a dead cat.

The Earth makes one resolution every 24 hours.

The cuckoo bird does not lay his own eggs.

To prevent conception when having intercourse, the male wears a condominium.

Parallel lines never meet, unless you bend one or both of them.

The pistol of a flower is its only protection against insects.

Artificial insemination is when the farmer does it to the cow instead of the 
bull.

If conditions are not favorable, bacteria go into a period of adolescence.

A super-saturated solution is one that holds more than it can hold.

A triangle which has an angle of 135 degrees is called an obscene triangle.

Bar magnets have north and south poles, horseshoe magnets have east and west 
poles.