Question

1) Name the process that involved in improvement of crop variety.
(Very Short Answer)

2) What is the difference between field fallow and multiple cropping?
(Short Answer)

3) Explain the effect of weedicides over other organisms.
(Short Answer)​

Answer 1

Explanation:

1] hybridisation

hybridisation(i) Crop improvement by hybridisation: Hybridisation refers to crossing between genetically dissimilar plants. This crossing may be intervarietal (between different varieties), interspecific (between two different species of the same genus) or intergeneric (between different genera).

2] Intercropping is a multiple cropping practice involving growing two or more crops in proximity. ... Crop rotation is practice of growing different crops in succession on a piece of land.

3] 2) Frog populations may be affected negatively by the use of weedicides as well. 3) Long term exposure of weedicides are responsible for various types of cancers. 4) They can play a role in sex reversal of certain organisms that experience temperature-dependent sex determination leading to alteration of sex ratios.