12th Standard Syllabus & Materials
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Published on: 04/11/2019
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.
Paddy, Wheat and Sorghum, etc., comes under the category of cereals. All the members of cereals belong to which of the following family?
Fabaceae
Poaceae
Leguminoneae
Caesalpinaeceae
2.
3.
4.
New world species of cotton _____.
Gossypium arboretum
G. herbaceum
Both a and b
Gossypium barbadense
5.
Tectona grandis is coming under family _____.
Lamiaceae
Fabaceae
Dipterocaipaceae
Ebenaceae
6.
Groundnut is native of ____.
Philippines
India
North America
Brazil
7.
Name any four millet varieties.
8.
What is maida? Mention its culinary purpose.
9.
10.
Give definitions for organic farming?
11.
Name the humors that are responsible for the health of human beings.
12.
13.
Write the cosmetic uses of Aloe.
14.
What are the King and Queen of spices? Explain about them and their uses.
15.
Write the uses of nuts you have studied.
16.
What are millets? What are its types? Give example for each type.
17.
18.
What is TSM? How does it classified and what does it focuses on?
19.
The principal coloring agent present in the leaf paste of Lawsonia inermis which give orange to dark red when applied on skin is ______
20.
The active principle in Marijuana is_________
21.
Binomial of teak is_________
22.
Which district of Tamil Nadu is the World's largest wholesale turmeric dealer?
23.
________ is the state tree of Tamil Nadu.
24.
Sorghum is native to _________continent.
25.
Palm
26.
Lady's finger
27.
Cashew nut
28.
Rice
1.
(b)
Poaceae
2.
(b)
3.
(c)
4.
(d)
Gossypium barbadense
5.
(a)
Lamiaceae
6.
(d)
Brazil
7.
Finger millet, Sorghum, Foxtail millet and Kodo millet.
8.
Processed wheat flour, that has little fibre, is called Maida which is used extensively in making parota, naan and bakery products.
9.
10.
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.
11.
Vatam, Pittam and Kapam.
12.
13.
1. Aloin - a mixture of glucosides.
2. Its gel used as skin tonic.
3. Cooling effect and moisturizing effect helps in creams, lotions, shampoos, shaving creams, after shave lotions preparation.
4. Used has emollient, antibacterial, antioxidant, antifungal and antiseptic.
14.
| Queen of Spices | King of Spices |
| Cardamom (Elettaria cardamomum) |
Black pepper (Piper nigrum) |
| Family : Zingiberaceae | Family : Piperaceae |
15.
| S. No | Common name | Botanical name | Uses |
| 1. | Cashew Nut | Anacardium occidentale (Family: Anacardiaceae) |
Garnishing sweets Ground for sauces _ Raw Kernels as snacks. |
16.
| S.No | Common name | Botanical name |
| 1 | Foxtail Millet | Staria italica |
| 2 | Kodo Millet | Paspalum scrobiculatum |
17.
18.
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. |
19.
( )
Lacosone
20.
( )
Trans-tetrahydrocanabinol (THC).
21.
( )
Tectona grandis
22.
( )
Erode
23.
( )
Palmyra
24.
( )
Africa
25.
Arecaceae
26.
Malvaceae
27.
Anacardiaceae
28.
Poaceae
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Tamilnadu Stateboard 12th Standard Subjects
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Chemistry
Physics
Biology
Computer Science
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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
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