Q.8 Explain in details. (1) Write a short note on Stamens and Pistil. (2) Write one activity of evaporation. (3) Write in details of winnowing method. (4) Write in details of spinning of cotton yarn.इसका आंसर चाहिए
Answers
Answer:
1)stamen is the part of flower where the pollen produced.Pistil is ovule producing part.
2) 1- take a jar full of water.
2-keep this jar for 4 to 5 days.
3-record your observations after 4 to 5 days.
OBSERVATIONS = water level will gi down.
3) windowing is a method by which chaff is separated from grains.during this method grains and their upper surface are kept in a soop. Then they throw that grains and their upper surface. due to wind the upper surface go to another side because they are of light weight. and grains go down straight on ground because they are of heavy weight. due to this the mixture of grains and chaff is separated.
4)The process of producing yarns from the extracted fibres
is called spinning. In this process the strands of cotton fibres are twisted together to form yarn.