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Revision Notes
Organisms Used in Laboratory Work — Revision Notes
Telangana Open School (TOSS) · Class 12 · Biology
Organisms Used in Laboratory Work revision notes for Telangana Open School (TOSS) Class 12 Biology: 3 topics in quick points.
53 questions30 flashcards4 concepts
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Key Topics to Revise
1
Common Organisms Cultured in the Laboratory
- Organisms are cultured for morphological, taxonomic, cytological, genetic, and behavioral studies.
- Commonly cultured organisms include: Amoeba, Paramecium, Hydra, Rhizopus (bread mould), Drosophila (fruit fly), and onion root tips.
- These organisms are chosen due to their ease of culture, short life cycle, and clear observable features under the microscope.
2
Methods of Culturing Organisms
- Culturing requires knowledge of habitat, collection method, growth medium, and preservation techniques.
- Paramecium is cultured in jars with decaying grass and leaves to promote bacterial growth (its food).
- Amoeba is cultured in petri dishes with wheat or rice grains in water, kept in dark and cool conditions.
3
Laboratory Equipment and Safety Measures
- Vasculum is a metal cylinder with a sliding door used to carry plant specimens during field trips.
- Plant press (field and lab types) is used to dry and preserve plant specimens for herbarium preparation.
- Nets like plankton nets, insect nets, and biological dredges are used to collect aquatic and flying organisms.
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Full NotesKey Concepts
Culturing means growing organisms inOrganisms like AmoebaTools like netsProper ventilation
Frequently Asked Questions
What are the important topics in Organisms Used in Laboratory Work for Telangana Open School (TOSS) Class 12 Biology?
Key topics in Organisms Used in Laboratory Work include Common Organisms Cultured in the Laboratory, Methods of Culturing Organisms, Laboratory Equipment and Safety Measures. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Organisms Used in Laboratory Work for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 53 practice questions on Organisms Used in Laboratory Work. Revise definitions regularly and use flashcards for quick recall before the exam.
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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