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Published on: 13/05/2022
QB365 provides detailed and simple solution for every Creative Questions in class 12 Biology Subject. It will helps to get more idea about question pattern in every Creative questions with solution.
latest Creative QuestionsDownload Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
What is cybrid?
2.
What is somatic embryogenesis? Give any two of its applications.
3.
What are Secondary metabolites? Give example.
4.
Point out the factors that determine success rate of tissue culturing.
5.
How the autoclaving is done for culture media?
1.
The fusion product of protoplasts without nucleus of different cells is called a cybrid.
2.
Somatic embryogenesis is the formation of embryos from the callus tissue directly and these embryos are called Embryoids.
Applications:
1. Somatic embryogenesis provides potential plantlets which after hardening period can establish into plants.
2. Somatic ,embryoids can be used for the production of synthetic seeds.
3.
Secondary metabolites are chemical compounds that are not required by the plant for normal growth and development but are produced in the plant as 'byproducts' of cell metabolism. For Example: Biosynthesis and isolation of indole alkaloids from Catharanthus roseus plant cell culture.
4.
The success of tissue culture lies in the composition of the growth medium, plant growth regulators and culture conditions such as temperature, pH, light and humidity.
5.
Culture media are dispensed in glass containers, plugged with non-absorbent cotton or sealed with plastic closures and then sterilized using autoclave at 15 psi (121°C) for 15 to 30 minutes.
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Business Maths and Statistics
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History
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