Artificial magnets can be found in ................. (only one/different) shape(s) and size(s)

Artificial magnets can be shaped like a

Artificial magnets can be made in different .................. (shapes/colours).

70 S ribosomes are found in

For making a magnet using the double-touch method, .................. (one/two) bar magnet(s) is/are required.

Magnetic force can work .................. (over a distance/only on contact).

In the single-touch method of making a magnet, ................. (one/two) bar magnet(s) is/are used.

Normally one embryo develops in one seed but when an orange seed is squeezed many embryos of different shapes and sizes are seen. Mention how it has happened.

Multiple alleles can be found only when population studies are made.

Which one is found in males only?

70 S type of ribosomes found in :-