RBSE Solutions For Class 12 Biology Chapter 17: Economic Botany and Human Welfare | Textbook Important Questions & Answers

RBSE Class 12 Biology Chapter 17- Economic botany and human welfare provide complete information related to the classification of plants for economic importance, different types of medicinal plants, industrial plants, food plants, food adjuncts and a lot more.

These important questions help students to enhance their conceptual knowledge and are completely prepared from the exam point of view, helping students revise the entire chapter.

The Rajasthan Board Class 12 Solutions help students by providing a strategy to prepare for various board examinations and also for medical exams like NEET, AIIMS, etc. By practising these important questions, students can gain deep knowledge about the topic.

RBSE Class 12 Biology Chapter 17 Important Questions

RBSE Biology Chapter 17: MCQ Type Questions

Q.1. Which of the following are the basic or fundamental requirements of human beings?

(a) Food.

(b) Shelter.

(c) Clothes.

(d) All of the above.

Sol: (d) All of the above.

Q.2. Pulses, vegetables and fruit-producing plants are called the ________.

(a) Food plants.

(b) Food adjuncts.

(c) Medicinal plants.

(d) Industrial plants.

Sol: (a) Food plants.

Q.3. The Withania portfolio is an example of which plant?

(a) Food plants.

(b) Food adjuncts.

(c) Medicinal plants.

(d) Industrial plants.

Sol: (c) Medicinal plants.

Q.4. Tobacco and betel nuts are an example of which plant?

(a) Food adjuncts.

(b) Medicinal plants.

(c) Industrial plants.

(d) Narcotics producing plants

Sol: (d) Narcotics producing plants

Q.5. Which of the following are beverage producing plants?

(a) Tea.

(b) Coffee.

(c) Cocoa.

(d) All of the above.

Sol: (d) All of the above.

Q.6. Cotton and jute are an example of________.

(a) Fibre plants.

(b) Medicinal plants.

(c) Industrial plants.

(d) Narcotics producing plants.

Sol: (a) Fibre plants.

Q.7.The classification of economically important plants was in the year________.

(a) 1962

(b) 1952.

(c) 1942.

(d) 1955.

Sol: (b) 1952.

Q.8. Spice producing plant is known as

(a) Food adjuncts.

(b) Medicinal plants.

(c) Industrial plants.

(d) Narcotics producing plants.

Sol: (a) Food adjuncts.

Q.9. Potato and sago are called the ________.

(a) Industrial plants.

(b) Food adjuncts.

(c) Medicinal plants.

(d) Starch producing plants.

Sol: (d) Starch producing plants.

Q.10. Mustard, Coconut, and Groundnut are an example of ________.

(a) Fatty oil

(b) Volatile oil

(c) Medicinal plants.

(d) Narcotics producing plants.

Sol: (a) Fatty oil.

RBSE Biology Chapter 18: Short Answer Type Questions

Q.1. How are green plants more special than other living organisms?

Sol. All green plants are more special than other living organisms because :

  1. It serves a crucial role in the food chain.
  2. It is the only source, which is essential for the existence of all life on earth.
  3. All plants are responsible for the production of oxygen – which is needed by most organisms for their survival.

Q.2. What is Economic Botany? Give its importance.

Sol. The plants through which humans derive the required useful substances are known as economically useful plants. The study of all economically useful plants and their products are known as Economic Botany. Economic Botany helps to study such plants systematically.

Q.3. Give some examples of beverages?

Sol. Tea, coffee and cocoa are the best examples of beverages produced from plants.

Q.4. Write the names of volatile oil and fatty oil-producing plants.

Sol. The volatile oil is produced from the santalum and fatty oil is produced from the Brassica campestris.

Q.5. How are Economic plants classified?

Sol. The classification of economically important plants has been explained in detail in the TextBook of Economic Botany which was published by A.F.Hill in 1952.

According to this book, the economic plants are classified into four different groups -Food plants, Food adjuncts, Medicinal plants and Industrial plants.

Q.6. What are fibre producing plants?

Sol. The plants which are used to fibres are called the fibre producing plants. These plants play an economic role in human welfare as fibre .i.e.clothes are basic requirements after the food. Cotton, kapok, jute, flax, ramie, sisal, and hemp are examples of fibre producing plants.

Q.7. What is fatty oils?

Sol. Fatty oils are non-volatile, complex organic compounds, which are insoluble in water and remain in liquid or solid or semi soils state at normal room temperature. These are obtained from different plant parts such as fruits and seeds.

Q.8. What are medicinal plants?

Sol. The plants which are used to treat diseases are called medicinal plants. There are various species of medicinal plants, which includes alkaloids, glucosides, tannins, resins, volatile oils, gums and a lot more.

Q.9. What are the different types of plant fibres?

Sol. Plant fibres are obtained from various parts of the plant’s body. These classifications are of three types and are based on different criteria:

  1. Surface fibres.
  2. Hard or leaf fibres.
  3. Soft, Stem or Bast fibres.

Q.10. What are Food Adjuncts plants?

Sol. In botany food adjuncts plants are referred to as spice producing plants, which includes coriander seeds, Black pepper, turmeric, cardamoms, cloves, etc.

RBSE Biology Class 12: Long Answer Type Questions

Q.1.What are industrial plants? List out the most important industrial plants with examples.

Sol. Industrial plants are defined as the

  1. Listed below are the important industrial plants.
  2. Fibre yielding plants – Cotton, Jute, Hemp and flax seeds etc.
  3. Timber yielding plants – Teak, Sheesham (Indian Rosewood)
  4. Rubber yielding plants – Natural Rubber.
  5. Gums and Resins – Babool (Gum arabic tree) and Pine (Pinus).
  6. Aromatic Oils-Indian sandalwood (Santalum album) Mogra (Arabian jasmine).
  7. Fatty oil- Mustard, Coconut, Groundnut, Castor oil.
  8. Starch and Sugar – Saboodana (Walnut sago), Sugarcane, Sugar beet (Beta vulgaris) .

Q.2.How are economically important plants classified? Explain.

Sol. Classification of Economically important plants are:

Scientists are conducting research and other experiments based on the classification of plants on the basis of different aspects.

The classification of plants, as followed by A, F. Hil in 1952 in his book “Economic Botany” is most accepted in this regard. Hill also classified economically important plants into four different groups based on their uses. This classification is as follows:

  1. Edible or food plants.
  2. Food Adjuncts.
  3. Medicinal Plants.
  4. Industrial Plants.

Q.3. What is Economic Botany?

Sol. The branch of Biology, which deals with the study of different varieties of plants along with their useful products obtained for human welfare. is termed as Economic Botany. Under this discipline, there are various types of useful plants and their products are studied. These products include cereals, pulses, vegetables, fruits, edible oil, species, medicines, timber, beverages, paper, starch, gum, fuel, etc.

Q.4. List out the names of few medicinal plants, Spice producing plants, Beverages and other Edible food plants.

Sol. The plants which are used to treat diseases are called the medicinal plants. There are various species of medicinal plants.

Medicinal Plants.

Ashwagandha (Withania portfolio), Giloy (Tinospora portfolio), White Musli (Chlorophytum borivilianum), Neem (Azadirachta indica), Indian Snakeroot (Rauwolfia serpentina), Holy Basil (Ocimum tenuiflorum), etc.

Spices Producing plants.

Coriander seeds, Black pepper, Turmeric, cardamoms, etc.

Beverage Producing plants.

Tea, Coffee, Cocoa, etc.

Edible food plants.

  • Cereals and millets: Bajra, Rice, Sorghum, Maize, Wheat, etc.
  • Pulses: Gram, Mung, Lobia, Black gram, Green gram, Arhar, Moth, etc.
  • Vegetables: Brinjal, Carrot, fingers, Pumpkin, Potato, Tomato, Pumpkin, etc.
  • Fruits: Apple, Banana, Citrus fruits, Figs, Guava, Mango, etc.

Q.5. What are Industrial Plants? List out the names of a few Industrial Plants.

Sol. Industrial Plants.

  • Fibre yielding plants – Cotton, Jute, Hemp and flax seeds etc.
  • Timber yielding plants – Teak, Sheesham (Indian Rosewood)
  • Rubber yielding plants – Natural Rubber.
  • Gums and Resins – Babool (Gum arabic tree) and Pine (Pinus).
  • Aromatic Oils-Indian sandalwood (Santalum album) Mogra (Arabian jasmine).
  • Fatty oil- Mustard, Coconut, Groundnut, Castor oil.
  • Sugar and starch – Sugarcane, Sugar beet (Beta vulgaris) Walnut sago (Saboodana).

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