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Published on: 10/09/2019
Botany - Economically Useful Plants and Entrepreneurial Botany
Download 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.
Which one of the following matches is correct?
Palmyra - Native of Brazil
Saccharum - Abundant in Kanyakumari
Steveoside - Natural sweetener
Palmyra sap - Fermented to give ethanol
2.
Observe the following statements and pick out the right option from the following:
Statement I – Perfumes are manufactured from essential oils.
Statement II – Essential oils are formed at different parts of the plants.
Statement I is correct
Statement II is correct
Both statements are correct
Both statements are wrong
3.
New world species of cotton _____.
Gossypium arboretum
G. herbaceum
Both a and b
Gossypium barbadense
4.
5.
Consider the following statements and choose the right option.
i) Cereals are members of grass family.
ii) Most of the food grains come from monocotyledon.
(i) is correct and (ii) is wrong
Both (i) and (ii) are correct
(i) is wrong and (ii) is correct
Both (i) and (ii) are wrong
6.
Give definitions for organic farming?
7.
Name the humors that are responsible for the health of human beings.
8.
Which TSM is widely practiced and culturally accepted in Tamil Nadu? - explain.
9.
Write the uses of nuts you have studied.
10.
Enumerate the uses of turmeric
11.
Which is called as the “King of Bitters”? Mention their medicinal importance.
12.
13.
What is TSM? How does it classified and what does it focuses on?
1.
(d)
Palmyra sap - Fermented to give ethanol
2.
(c)
Both statements are correct
3.
(d)
Gossypium barbadense
4.
(a)
5.
(b)
Both (i) and (ii) are correct
6.
Organic farming is an alternative agricultural system in which plants/crops are cultivated in natural ways by using biological inputs to maintain soil fertility and ecological balance thereby minimizing pollution and wastage.
7.
Vatam, Pittam and Kapam.
8.
1. Siddha system is widely practiced and culturally accepted in Tamil Nadu.
2. The entire knowledge is documented in the form of poems in Tamil.
3. It is principally based on the Panchabuta philosophy.
4. The drug sources of Siddha include plants, animal parts, marine products and minerals. This system uses about 800 herbs as source of drugs.
5. Great stress is laid on disease prevention, health, promotion, rejuvenation and cure.
9.
| S. No | Common name | Botanical name | Uses |
| 1. | Cashew Nut | Anacardium occidentale (Family: Anacardiaceae) |
Garnishing sweets Ground for sauces _ Raw Kernels as snacks. |
10.
Curcumin extracted from turmeric - yellow colour - good anti oxidant fight against cancer - anti inflammatory, anti diabetic, anti bacterial, antifungal and anti viral activities - stops platelets from clotting.
11.
1. It is Andrographis paniculata belongs to Acanthaceae family.
2. It is a potent hepatoprotective to treat liver disorders.
3. Used to make Nilavembu Kudineer to treat malaria and dengue.
12.
13.
TSM indicates Traditional Systems of Medicines. It has been classified into institutionalized and non institutionalized methods.
| S.No | Institutionalized | Non - Institutionalized |
| 1 | Two thousand years practice | No such records |
| 2 | Prescribed texts are available | Only oral form by rural and tribal peoples |
| 3 | Focuses on symptoms, disease diagnosis, drugs to cure, preparation of drugs, dosage | Focuses on healthy diet for maintaining good health and disease reversal. |
12th Standard Syllabus & Materials
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Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
Economics
Maths
Chemistry
Physics
Computer Technology
History
Accountancy
Tamil
English
French
Tamilnadu Stateboard Standards
