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Biology NEET - XI: Chapter 2- Biological Classification Part 7

Biology25 CardsCreated about 2 months ago

This deck covers key questions and answers from Chapter 2 of the Biology NEET syllabus, focusing on biological classification, including bacteria, diatoms, and dinoflagellates.

Rocky mountain spotted fever is caused by

Rickettsia rickettsii
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Key Terms

Term
Definition
Rocky mountain spotted fever is caused by
Rickettsia rickettsii
Chancroid is caused by
Haemophilous ducrei
Streptomycin is produced by the bacteria
Streptomyces griseus
Chloramphenicol is produced by
Streptomycin venezula
Vitamin B12 is produced by the bacteria
Propionibacterium
Which bacteria is used in curing of tea leaves?
Bacillus megatherium

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TermDefinition
Rocky mountain spotted fever is caused by
Rickettsia rickettsii
Chancroid is caused by
Haemophilous ducrei
Streptomycin is produced by the bacteria
Streptomyces griseus
Chloramphenicol is produced by
Streptomycin venezula
Vitamin B12 is produced by the bacteria
Propionibacterium
Which bacteria is used in curing of tea leaves?
Bacillus megatherium
Which bacteria is used in retting of fibres?
Clostridium
Which are the smallest living cells known?
Mycoplasma
Which organisms are known as jokers of plant kingdom?
Mycoplasma
Which organisms are known as pleomorphic organisms?
Mycoplasma
Based on the type of respiration, mycoplasma are
Facultative anaerobes
Is flagella present in diatoms?
Yes, in sperms
What is frustule?
The cell wall of diatoms
Food reserve in diatoms is
Chrysolaminarin (Beta 1,3 glucan) and leucosin
What happens to cell wall during cell division in diatom?
The two new cells retain half the old cell wall and synthesis the other half new.
What division to dinoflagellates belong?
Pyrophyta
What is cell wall made of in dinoflagellates?
Cellulose
Which group of protists are also called 'Armoured protists'?
Dinoflagellates
What is the food reserve in dinoflagellates?
Carbohydrates and oil
What pigments are present in dinoflagellates?
Chlorophyll a, chlorophyll c, alpha carotene, and xanthophyll
What pigments are present in diatoms?
Chlorophyll a, chlorophyll c, beta carotene and diadinoxanthin
What is pusule?
Non contractile vacuole found in dinoflagellates
What is the function of pusule?
Osmoregulation and buoyancy
What is the cell wall of dinoflagellates called?
Theca/lorica
Sexual reproduction is absent in all except one genus of dinoflagellates, which is?
Noctiluca