Pls Solve All Question And and Answers Class 8
Answers
Answer:
1. Microorganisms are classified into four major groups. These groups are bacteria, fungi, protozoa and some algae.
2. Microorganisms help in the preparation of curd, bread, cake etc.
(ii) They are used to produce alcohol at large scale.
(iii) Yeast is used to prepare vinegar.
(iv) Microorganisms are used to make wines.
(v) Rhizobium: (a) Fixing nitrogen
3.) Kharif crops are those which are grown in rainy season. For example – Cotton, groundnut. (b) Rabi crops are those which are grown in winter season. For example – Wheat, mustard.
4. Weeds are unwanted plants.
Weeds can be controlled using weedicides. It is a chemical, which is sprayed in the fields to kill all available weeds.
Tilling before sowing of crops also helps in removing weeds. Tilling uproots the weeds.
The manual method of removing weeds is with the help of a khurpi water with main crop.
AntiBiotics are the chemical substances produces from microorganisms like bacteria, and are used as a medicine to kill or to stop the growth of the disease-causing microorganisms.
Precautions to be taken while using antibiotics are:
Antibiotics should be taken under the supervision of a well qualified doctor.
Course (intake) of antibiotics should be completed as prescribed by the doctor.
Antibiotics should be taken in the right amount and at the right time.
Hope it helps have a great day ahead
Answer:
microorganisms are majorly 5 group
1 virus
2bacteria
3 archeae
4fungi
5 protista