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Published on: 12/10/2019
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.
2.
What is TSM? How does it classified and what does it focuses on?
3.
Write the origin and area of cultivation of green gram and red gram.
4.
What are organic pesticides?
5.
What is vulcanization? Who invented it?
6.
Write a note on origin and area of cultivation of cotton.
7.
Write the uses of nuts you have studied.
8.
Enumerate the uses of turmeric
9.
If a person drinks a cup of coffee daily it will help him for his health. Is this correct? If it is correct, list out the benefits.
10.
What are millets? What are its types? Give example for each type.
1.
2.
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. |
3.
| S.No | Common Name | Botanical name | Origin and area |
| 1 | RED GRAM | Cajanus cajan | Southern India, cultivated in Maharashtra, Andhra Pradesh, Madhya Pradesh Karnataka and Gujarat |
| 2 | GREEN GRAM | Vigna radiate | State of Maharashtra. Cultivated in Madhya Pradesh, Karnata and Tamil Nadu. |
4.
Pest like aphids, spider and mites can cause serious damage to flowers, fruits, and vegetables. These creatures attack the garden in swarms, and drain the life of the crop and often invite disease in the process. Many chemical pesticides prove unsafe for human and the environment. It turns fruits and vegetables unsafe for consumption. Thankfully, there are many homemade, organic options to turn to war against pests.
5.
The heating of the rubber with sulphur under pressure at 150°C is called vulcanization. It was invented by Charles Goodyear in 1839.
6.
Cotton is one of the oldest cultivated crops of the world. It has been cultivated for about 8000 years both in new world and in old world. Commercial cotton comes from four cotton species: two from the new world and two from the old world.
(1) Gossypium hirsutum
(2) G.barbadense are the New world species and
(3) G. arboretum
(4) G. herbaceum are the old world species.
In India, cotton is cultivated in Gujarat, Maharashtra, Andhra Pradesh and Tamil Nadu.
7.
| S. No | Common name | Botanical name | Uses |
| 1. | Cashew Nut | Anacardium occidentale (Family: Anacardiaceae) |
Garnishing sweets Ground for sauces _ Raw Kernels as snacks. |
8.
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.
9.
Caffeine present in the coffee enhances acetylcholine in brain - Iower the incidence of fatty liver diseases, cirrhosis and cancer reduce the risk of type 2 diabetes.
10.
| S.No | Common name | Botanical name |
| 1 | Foxtail Millet | Staria italica |
| 2 | Kodo Millet | Paspalum scrobiculatum |
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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

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