Question

3. Write short notes
A. Useful and harmful bacteria.
B. Five Kingdom system
C. Useful Fungi​

Answer 1

Answer:

bacteria are used for making curd, alcohol and etc..

Answer 2

Answer:

Bacteria is helpful as well as harmful.

Explanation:

bacteria like nitrogen fixing bacteria like Nitrosomonas and nitrosococcus which convert free nitrogen into nitrates which is essential for plant .Also lactobacillus bacteria is used for preparing curd and streptomycetes bacteria is used for preparing many antibiotics.

Harmful bacteria causes disease in human beings like pneumonococcus cause pneumonia that affect lungs ,Mycobacterium typhii cause typhoid and many more.

B.Five KingdomSystem Of Classification

According to RH whittaker all organism is divided into five kingdom ,kingdom monera ,kingdom protista ,kingdom fungi ,kingdom plantea and kingdom animalia .