Complete the missing links.
Penicillin was discovered by…………..

Complete the missing links. Curdling of milk is done by………….

How was penicillin discovered?

Complete the missing links: Rearing of silkworms is called ………………. .

Complete the missing links: The excretion in insects is by …………………. .

Complete the missing links: Cocoon is secreted by ……………….

Complete the missing links: The non-motile cilia are called…………………. .

Complete the missing links: Gill slits are covered by operculum in ………………… .

Complete the missing links. Neomycin antibiotic is produced by…………,while streptomycin is produced by…………..

Complete the missing links: The study of soil is called……………..

Complete the missing links: Exoskeleton of cockroach is ……………. .