9th grade biology practice

Bio-piracy - Bio piracy refers to unauthorised and unlawful access to biological secret and use of such secrets for specific gain. In biological research many secrets have been unravelled. Genetic structures of potentially useful organisms, genetic structures..

It is the study of principles and practices of cultivating commercially important species of plant..

It is the application of principles and practices of engineering and technological sciences in living organism..

It is the study of principles and practices of farming commercial species of fishes. It is a branch of aquaculture..

It is the study of principles and practices of cultivating mulberry plants and rearing of silkworms for obtaining commercial sil..

It is the study of principles and practices pertaining to the rearing of honeybee..

It is the study of principles and practices related to improvement of quality as well as quantity of food including techniques of preservation of foo..

Auxins of various types are used now-a days for certain useful aspects of agricultural practices directly related to economic gains and food producti..

The fertility of the topsoil can be restored by taking the following measures. a) Regular use of manures and fertilizers can replenish the minerals used by the crops. Green manuring can also be done. b) Crop rotation should be practiced c) New techniques of applying water beneath the soi..