Tag: botany

The botanical name of this plant is Sachatum moonja.

Use of charkha was popularized by Mahatma Gandhi as part of the Independence movement. He encouraged people to wear clothes made of homespun yarn and disapprove of imported cloth made in Britain. Charkha is a handmade device used to spun yarn.

Cotton is usually picked by hands and fibres and then separated from the seeds by combing.

Natural rubber is an addition polymer that is obtained as a milky white fluid known as the latex from a tropical rubber tree. Natural rubber is from the monomer isoprene (2-methyl-1,3-butadiene). Since isoprene has two double bonds, it still retains one of them after the polymerization reaction. Natural rubber has the cis configuration for the methyl groups. So, the correct option is A i.e. Isoprene.

The suitable climate for growing jute is a warm and wet climate, which is offered by the monsoon climate during the fall season, immediately followed by summer. Temperatures ranging from 25-30 °C and relative humidity of 70%–90% are favorable for successful cultivation. Jute requires 160-200 cm of rainfall weekly with extra needed during the sowing period. River basins or alluvial or loamy soils are best for jute cultivation. Jute cultivation in red soils may require a high dose of manure.

Fibres can be classified as natural fibres and synthetic fibres.
Natural fibres are obtained from plants and animals. The examples of such fibres include cotton, jute, silk and wool.
Synthetic fibres are made from chemical substances, which are not obtained from plant or animal sources. Examples include polyester, nylon and acrylic.

Corypha is a monocarpic palm. It belongs to Arecaceae family (family of palms) which only flowers once in its lifetime.

Perennial plants are plants which can live for more than two years whereas a biennial plant is a flowering plant that takes two years to complete its biological lifecycle. So the difference between perennial plant and biennial is that perennial plants do not die after seasonal flower production.