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Published on: 22/01/2020
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.
What does NCB stands for? Mention its role.
2.
Name the plant species used for making paper pulp.
3.
Mention any two Jute species.
4.
Compare Spices and Condiments.
5.
How coffee plants are introduced to India
6.
What is toddy?
7.
Point out the uses of sugarcane.
8.
Which is our National fruit and State tree of Tamil Nadu?
9.
Name the family does the cereals and pulses belong to.
10.
Write the health benefits of Kodo millet.
11.
Eating millets is good for diabetic patients. How?
12.
Ragi rich food helps to overcome bone related ailments - justify.
13.
Name any four millet varieties.
14.
What is maida? Mention its culinary purpose.
15.
Give the binomials of paddy and wheat.
1.
The Narcotics Control Bureau (NCB) is the nodal drug law enforcement and intelligence agency of India and is responsible for fighting drug trafficking and the abuse of illegal substances.
2.
Wood of Melia azadirachta, Neolamarkia chinensis, Casuarina spp and Eucalyptus spp are used for making paper pulp.
3.
(a) Corchorus capsularis
(b) Corchorus olitorius
4.
Spices are accessory foods mainly used for flavouring during food preparation to improve their palatability. Spices are aromatic plant products and are characterized by sweet or bitter taste. Spices are added in minimal quantities during the cooking process. For example black pepper. Condiments, on the other hand, are flavouring substances having a sharp taste and are usually added to food after cooking. For example, curry leaves.
5.
Coffee arabica is the prime source of commercial coffee which is native to the tropical Ethiopia. An Indian Muslim saint, Baba Budan introduced coffee from Yemen to Mysore.
6.
Inflorescence of palmyra is tapped for its sap which is used as health drink. Sap is processed to get palm jaggery or fermented to give toddy.
7.
Sugar cane is the raw material for extracting white sugar. Sugarcane supports large number of industries like sugar mills producing refined sugars, distilleries producing liquor grade ethanol and millions of jaggery manufacturing units. Fresh sugarcane juice is a refreshing drink. Molasses is the raw material for the production of ethyl alcohol.
8.
National fruit of India is Mango.
State tree of Tamil Nadu is Palmyra.
9.
Cereals belong to the family Poaceae.
Pulses belong to the family Fabaceae.
10.
Kodo millet is a good diuretic and cures constipation. Helps to reduce obesity, blood sugar and blood pressure.
11.
Millets are gluten free and have less glycemic index, hence it is good for diabetic patients.
12.
Ragi (Finger millet) is a kind of millet which has less glycemic index and rich in calcium.
Hence consuming ragi food items enhances the bone strength.
13.
Finger millet, Sorghum, Foxtail millet and Kodo millet.
14.
Processed wheat flour, that has little fibre, is called Maida which is used extensively in making parota, naan and bakery products.
15.
Paddy: Oryza sativa.
Wheat: Triticum aestivum.
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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