Ch 10Economically Useful Plants & Entrepreneurial Botany — Class 12 Botany, concept-first.

The chapter opens by framing just how dependent life is on the plant world: the land and water of the Earth support an enormous range of plant life, and every other living thing depends on it, directl…

Roughly 10,000 plant species are usable as food, but only around 1,500 of them have ever actually been brought under cultivation.

A cereal is any member of the grass family, Poaceae, that is cultivated for its starchy, edible grain; the English word comes from Ceres, the Roman goddess of agriculture, a nod to how central these g…

Millets, called Siru Thaniyangal (small grains) in Tamil, are a group of small-seeded grasses first domesticated by ancient farming communities across Africa and Asia; they are gluten-free and carry a…

Beyond the widely grown major millets, several smaller, more locally important millets round out this food group, valued especially for their fibre content and their suitability in dry, marginal farmi…

Pulses take their English name from the Latin puls or pultis, meaning 'thick soup' — a nod to how these seeds are traditionally cooked.

A walk through any Indian vegetable market — okra, potatoes, brinjal, tomatoes and the various cucurbits — quickly shows how experience and cultural habit guide the choice of what is fresh, tender and…

Edible fruits are fleshy structures prized for their pleasant aroma and flavour, and they supply potassium, dietary fibre, folic acid and vitamins.

Nuts are simple dry fruits built around a hard outer shell enclosing an edible kernel, and they pack a nutrient-dense combination of healthy fats, fibre, protein, vitamins, minerals and antioxidants.

The sweetness we taste in sugarcane stems, sugar-beet roots, apple fruit and palmyra sap all comes from varying proportions of the same broad family of sweet, soluble carbohydrates called sugars, used…

Plant oils fall into two broad classes. Essential (volatile) oils are aromatic oils that evaporate on contact with air and can come from almost any plant organ — flowers of jasmine, fruits of orange,…

Every non-alcoholic beverage discussed in this section shares two features: each contains alkaloids that stimulate the central nervous system, and each has mild diuretic properties.

Spices are aromatic plant products, sweet or bitter in taste, added in small quantities during cooking to improve palatability — black pepper is the text's own example — while condiments are sharp-tas…

Botanically, a fibre is defined narrowly as a single long, narrow, thick-walled plant cell, and plant fibres are grouped for practical purposes by how they are used — textile, brush, plaiting and fill…

Timber trees answer the basic human need for shelter, and this section works through three of the most important ones.

Latex is the milky fluid tapped from certain plants and processed into rubber and rubber goods. Rubber (Hevea brasiliensis, family Euphorbiaceae) is native to Brazil but became an important cash crop…

The English word paper is derived from papyrus, the plant Egyptians used to make an early paper-like writing material, but true paper — made from the inner bark of the paper mulberry tree — was a Chin…

Dyes have added colour to human goods since antiquity — the earliest authentic dyeing records survive in the tomb paintings of ancient Egypt, where mummy wrappings were coloured with saffron and indig…

Traditionally, people across Southern India relied on home-prepared plant products — turmeric, green gram powder, henna, soap-nut (sigaikai) and reetha (usilai) — for skin and hair care.

The word perfume traces to the Latin per (through) and fumus (smoke), recalling the old ritual of burning scented woods at religious ceremonies; in less hygienic eras, essential oils also served the p…

India's Traditional Systems of Medicine (TSM) split broadly into two kinds: institutionalised, documented systems such as Siddha and Ayurveda, each practised for roughly two thousand years and backed…

India is a genuine treasure house of medicinal plants, which underpin every institutional system of medicine practised here and connect local traditional heritage to global trade; strikingly, around 9…

Entrepreneurial Botany is the study of how new businesses are built around plant resources, and equally of the practical process of starting such a business — an entrepreneur, by this definition, is s…

Mushrooms are the fruiting bodies of edible fungi and rank among the most highly priced vegetable commodities, valued both for their nutrition and for their distinctive aroma and flavour — they are in…