The traditional plough, made of wood, has a triangular iron strip called ploughshare. It is drawn by animals, typically a pair of bulls, and has a long wooden shaft. NCERT Class 8 Science Chapter 1 Crop Production and management
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Genetic variations in genes that code for proteins involved in processes like hormone production can impact the efficiency of those processes. If an enzyme, crucial for hormone synthesis, works efficiently (due to a normal gene), the plant will be tall. ...
Proteins control characteristics by influencing cellular processes. For example, in the context of plant height, proteins, including enzymes, can regulate the production of plant hormones. The amount of these hormones, in turn, affects the growth and height of the plant.
The main tools are plough, hoe, and cultivator. They break soil clumps, aid in tilling, removing weeds, and loosening the soil for better yield. NCERT Class 8 Science Chapter 1 Crop Production and Management
A gene is a section of DNA that provides information for the synthesis of a particular protein. It carries the genetic code for a specific trait or characteristic.