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12th Biology - Botany - Economically Useful Plants and Entrepreneurial Botany Practice Question Paper

Published on: 03/01/2020

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.

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Std: 12th Standard - Biology

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Questions:

Multiple Choice Question

8 x 1 = 8

The plant source of Marijuana is ________

(a)

Andrograph is paniculata

(b)

Phyllanthus maderspatensis

(c)

Cannabis sativa

(d)

Papaver somniferum

Statement 1: Aloevera belongs to the family Asphodelaceae.
Statement 2: Jasminum grandiflorum belongs to the family of Oleaceae.

(a)

Statement 1 is correct and Statement 2 is also correct

(b)

Statement 1 is correct and Statement 2 is incorrect

(c)

Statement 1 is incorrect and Statement 2 is correct

(d)

Both the Statements are incorrect

Statement 1: Chinese discovered the paper.
Statement 2: Eucalyptus and Casuarina are the widely used tree species for making paper pulp.

(a)

Statement 1 is correct and Statement 2 is also correct

(b)

Statement 1 is correct and Statement 2 is incorrect

(c)

Statement 1 is incorrect and Statement 2 is correct

(d)

Both the Statements are incorrect

Identify the Tamil name for flaked rice

(a)

Nel

(b)

Aval

(c)

Pori

(d)

Umi

Match the common names of the given plant species with their respective binomial

(A)	Paddy	(I)	Vigna radiata
(B)	Lady's finger	(II)	Titicum aestivum
(C)	Wheat	(III)	Oryza sativa
(D)	Green gram	(IV)	Abelmoschus esculentus

(a)

A-iii, B-iv, C-ii and D-i

(b)

A-ii, B-iii, C-i and D-iv

(c)

A - i, B - iii, C - iv and D - ii

(d)

A - i, B - ii, C - iv and D - iii

Observe the following statements and pick out the right option from the following:
Statement I: The drug sources of Siddha include plants, animal parts, ores and minerals.
Statement II: Minerals are used for preparing drugs with long shelf-life.

(a)

Statement I is correct

(b)

Statement II is correct

(c)

Both statements are correct

(d)

Both statements are wrong

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.

(a)

Statement I is correct

(b)

Statement II is correct

(c)

Both statements are correct

(d)

Both statements are wrong

Tectona grandis is coming under family _____.

(a)

Lamiaceae

(b)

Fabaceae

(c)

Dipterocaipaceae

(d)

Ebenaceae

Generic 3

5 x 3 = 15

Name the plant source from which the following products are obtained.
(a) Maida
(b) Rubber
(c) Morphine
(d) Coffee

10.

Mention the ways in which mangoes are used in Indian culinary.

11.

Enumerate the uses of turmeric

12.

Which is called as the “King of Bitters”? Mention their medicinal importance.

13.

Discuss which wood is better for making furniture.

Generic 5

4 x 5 = 20

14.

Draw a table mentioning binominals, family name, useful part and their medical uses of any five local medicinal plants

15.

How will you prepare an organic pesticide for your home garden with the vegetables available from your kitchen?

16.

Write the economic importance of rice.

17.

Write the origin and area of cultivation of green gram and red gram.

Fill in the blanks

2 x 1 = 2

18.

The principal coloring agent present in the leaf paste of Lawsonia inermis which give orange to dark red when applied on skin is ______

19.

Which district of Tamil Nadu is the World's largest wholesale turmeric dealer?

One or Two Words / Correct Statement

1 x 1 = 1

20.

Which state of India ranks first in coffee consumption?

Generic 2

4 x 2 = 8

21.

What does NCB stands for? Mention its role.

22.

What is toddy?

23.

Why do we take vegetables in our diet?

24.

Name any four millet varieties.

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Answers Key:

Multiple Choice Question

8 x 1 = 8

(a)
Statement 1 is correct and Statement 2 is also correct

(a)
Statement 1 is correct and Statement 2 is also correct

(b)
Aval

(a)
A-iii, B-iv, C-ii and D-i

(b)
Statement II is correct

(a)
Lamiaceae

Generic 3

5 x 3 = 15

(a)	Maida	Triticum durum
(b	Rubber	Hevea brasiliensis
(c)	Morphine	Papaver somniferum
(d)	Coffee	Coffea arabica

10.

Mango is the major table fruit of India, which is rich in beta carotenes. It is utilized in many ways, as dessert, canned, dried and preserves in Indian cuisine. Sour, unripe mangoes are used in chutneys, pickles, side dishes, or may be eaten raw with salt and chili. Mango pulp is made into jelly. Aerated and non-aerated fruit juice is a popular soft drink.

11.

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.

12.

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.

13.

1. Tectona grandis is the plant gives wood better for making furniture.
2. It is one of the best timber in the world.
3. The heart wood is yellow to golden brown turner darker.
4. Durability and immune to attack of termites and fungi is well known.

Generic 5

4 x 5 = 20

14.

S.No	Common Name	Botanical Name	Family	Plant Part Used	Medicinal Uses
1	Holy basil	Ocimum Sanctum	Lamiaceae	Leaves and Roots	The leaves are stimulant, antiseptic, antihypertensive and anti-bacterial and expectorant used in bronchitis. Decoction of roots is given as a diaphoretic in malarial fever.
2	Indian Phyllanthus	Phyllanthus emblica	Phyllanthaceae	Fruit	It is a potent rejuvenator and immune modulator. It has a anti-ageing properties. It helps to promote longevity, enhance digestion, treat constipation and reduce fever and cough.
3	Indian Acalypha	Acalypha indica	Euphorbiaceae	Leaves	Used to cure skin diseases caused by ringworms. Powdered leaves are used to cure bedsores and infected wounds
4	Vilvam	Aegle marmelos	Rutaceae	Fruit	The unripe fruit is used to treat problems of stomach indigestion. It kills intestinal parasites.
5	Veldt grape	Cissus quandran-gularis	Vitaceae	Stem and Root	Paste obtained from the and powdered stem and root root of this plant is used in bone fractures. Whole plant is useful to treat asthma and stomach troubles.

15.

1. Mix 120 g of hot chillies with 110 g of garlic. Chop them.
2. Blend to form thick paste.
3. Add it with 500 ml of warm water. Stir to mix.
4. Pour it in a glass container leave it for 24 hours. Keep it in sunny location.
5. Strain and pour the fluid part and discard the vegetable sediments for compost.
6. Take the fluid in squirt bottle to spray.
7. Spray every 4 to 5 days to keep the bugs away for all the season.

16.

Common Name Botanical name Origin and area Uses PADDY/ RICE:Semi
aquatic crop grown in standing water. Second
position next to wheat Oryza sativa South East Asia - China, lndia,
Thailand- Delta of
TamilNadu 1. Staple food with calcium in many southern hill regions of lndia.
2. Made in to Porridge and gruel.
3. Ragi malt - nutrient drink and fermented beverages

17.

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.

Fill in the blanks

2 x 1 = 2

18.

()
Lacosone

19.

()
Erode

One or Two Words / Correct Statement

1 x 1 = 1

20.

()
Tamil Nadu

Generic 2

4 x 2 = 8

21.

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.

22.

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.

23.

Vegetables are the important part of healthy eating and provide many nutrients, including potassium, fiber, folic acid and vitamins A, E and C. The nutrients in vegetables are vital for maintenance of our health

24.

Finger millet, Sorghum, Foxtail millet and Kodo millet.