RBSE Solutions for Class 12 Biology Chapter 17 Economic Botany and Human Welfare
RBSE Solutions for Class 12 Biology Chapter 17 Economic Botany and Human Welfare
Rajasthan Board RBSE Class 12 Biology Chapter 17 Economic Botany and Human Welfare
RBSE Class 12 Biology Chapter 17 Multiple Choice Questions
Question 1.
Basic or fundamental requirement(s) of human is –
(a) Food only
(b) Cloth only
(c) Shelter and food only
(d) All of the above
Answer:
(d) All of the above
Question 2.
Spice producing plants are known as –
(a) Narcotics producing plants
(b) Food adjuncts
(c) Medicinal plants
(d) Industrial plants
Answer:
(b) Food adjuncts
RBSE Class 12 Biology Chapter 17 Very Short Answer Questions
Question 1.
Write the name of two starch producing plants.
Answer:
Potato and Sago (Saboodana).
Question 2.
What are the main, basic or fundamental requirements of human?
Answer:
Food, clothing and shelter.
Question 3.
How green plants are more special than other living organisms.
Answer:
Green plants perform photosynthesis and fix light energy into organic compounds.
Question 4.
Write the name of volatile oil and fatty oil-producing plants.
Answer:
- Volatile oil – Chandan oil (Santalum).
- Fatty oil – Mustard oil (Brassica campestris).
RBSE Class 12 Biology Chapter 17 Short Answer Questions
Question 1.
Write the definition of Economic Botany and explain its importance.
Answer:
Those plants through which human derives useful substances are known as economically useful plants. The study of economically important plants and their products is known as Economic Botany. The economic botany helps to study such plants systematically.
Question 2.
Give some examples of beverages?
Answer:
Tea, coffee, cocoa.
Question 3.
Write a short note on Industrial Plants.
Answer:
Some of the industrial plants are as follows –
- Fibre Yielding Plants: Cotton, Jute, Hemp, Flax etc.
- Timber Yielding Plants: Teak, Sheesham (Indian Rosewood).
- Rubber Yielding Plants: Natural Rubber.
- Gums and Resins: Babool (Gum arabic Tree, Vachellia Analytica), Pine (Pinus).
- Aromatic oils: Indian Sandalwood (Santalum album), Mogra (Arabian jasmine – Jasminum sambac).
- Fatty Oil: Mustard, Groundnut, Coconut, Castor oil.
- Sugar and Starch: Sugarcane, Sugar beet (Beta vulgaris), Walnut, Sago (Saboodana)
RBSE Class 12 Biology Chapter 17 Essay Type Questions
Question 1.
How Economically important plants are classified? Discuss?
Answer:
Classification of Economically Important Plants:
Scientists from time to time classified the plants on the basis of different aspects. The classification of plants followed by A.F. Hill (1952) in his book “Economic Botany” is most accepted in this regard. Hill classified economically important plants into four groups on the basis of their use. These are as follows:
Edible or food plants:
- Cereals and Millets: Wheat, Rice, Maize, Sorghum and Bajra etc.
- Pulses: Gram, Mung, Urad (Black gram), Arhar, Moth, Chaula (Lobia) etc.
- Vegetables: Potato, Brinjal, Tomato, Pumpkin, Ladyfinger etc.
- Fruits: Pomegranate, Orange, Banana, Apple etc.
Food Adjuncts:
- Spices and Garam Masala: Turmeric, Pepper, Black pepper and Coriander seeds etc.
- Beverage: Tea, Coffee, Cocoa.
Medicinal Plants:
- Medicinal plants: Ashwagandha (Withania portfolio), Giloy (Tinospora portfolio), White Musli (Chlorophytum Bonvillain) Neem (Azadirachta indica), Atees (Equinetum heterophile), Opium (Papaver somniferum), Indian Snake Root (Rauvolfia serpentine).
- Smoking, Chewing and Narcotic Products: Tobacco, Supari (Betel nut), “Bhaang” (Cannabis).
Industrial Plants:
- Fibre Yielding Plants: Cotton, Jute, Hemp, Flax etc.
- Timber Yielding Plants: Teak, Sheesham (Indian Rosewood) etc.
- Rubber Yielding Plants: Natural Rubber.
- Gums and Resins: Babool (Gum arabic Tree, Vachellia portfolio), Pine (Pinus).
- Aromatic oils: Indian Sandalwood (Santalum album), Mogra (Arabian jasmine, Jasminum sambac).
- Fatty Oil: Mustard, Groundnut, Coconut, Castor oil.
- Sugar and Starch: Sugarcane, Sugar beet (Beta vulgaris), Walnut, Sago (Saboodana).
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