100% FREE ACCESS10th Standard Syllabus & Materials
10th Standard
TN 10th English Prose - 4 - The Attic Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Supplementary - 3 - The Story of Mulan Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th English Poem - 3 - I am Every Woman Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Prose - 3 - Empowered Women Navigating The World Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th English Supplementary - 2 - Zigzag Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Poem - 2 - The Grumble Family Important Questions And Answers Study Material - QB365 Set A
Published on: 03/07/2021
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Questions + Answers key
Take MCQ Science Test1.
Mention two characteristics of stem cells.
2.
Name the methods of selection.
3.
Define mutation.
4.
How was IR-8 variety produced?
5.
Define Green Revolution?
1.
The two important properties of stem cells that differentiate them from other cells are:
(i) Its ability to divide and give rise to more stem cells by self-renewal
(ii) Its ability to give rise to specialised cells with specific functions by the process of differentiation.
2.
Methods of selection:
There are three methods of selection. They are
(i) Mass selection
(ii) Pureline selection
(iii) Clonal selection.
3.
Mutation is defined as the sudden heritable change in the nucleotide sequence of DNA in an organism. It is a process by which genetic variations are created which in turn brings about changes in the organism.
4.
(i) IR-8 (Miracle rice) is a high-yielding semi-dwarf rice variety developed by International Rice Research Institute (IRRI), Philippines.
(ii) It was a hybrid of a high yielding rice variety Peta from Indonesia, and a dwarf variety from China, named Dee-geo-woogen (DGWG).
5.
Green Revolution is the process of increasing food production through high yielding crop varieties and modern agricultural techniques in underdeveloped and developing nations.
10th Standard Syllabus & Materials
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
