About 7000 species of plant are known to have been used by people as food, and about 150 of these are in regular cultivation. Human cultivation of plant is part of agriculture, alongside raising animals. Without agriculture, there would be no human civilization.
WHAT ARE THE MOST IMPORTANT FOOD CROPS ?
The most important crops are the cereals such as wheat, rice and maize. These from the basis of many people’s diet. Tuber crops, such as potatoes, are also widely grown. All these foods provide carbohydrates, while pulses, such as peas, beans and lentils, are rich in protein.
Fruits of the temperate regions include apples, pears and strawberries. In warmer regions, there are citrus fruits such as papayas, pineapples and melons. Some fruits have a savoury flavour, such as avocados and peppers.
Maple syrup is often used as a
sweetener with pancakes.
WHAT TREE GIVE US A SWEET, SUGARY SYRUP?
The sugar maple has a sweet sap, which is harvested to make maple syrup. Most maple syrup comes from the province of Quebec, in Canada.
The Amazon cow-tree is a tropical fig. it takes its name from the fact that it produces a milk-like sap, or latex, which can drunk just like cow’s milk.
Sunflower oil is commonly used for fraying
food and contain essential vitamin E
WHICH PLANTS GIVE US OIL ?
The seed of many plants are rich in oil, which they store as a source of food and energy. We extract oil from several of these plants, including olive, sunflower, corn(maize), soya bean, peanuts, oil-seed rape, sesame and Africa oil palm.
WHAT PLANTS ARE USED TO MAKE SUGAR?
The main source of sugar is the sweet steams of sugar cane, a tall grass that grows in tropical countries. In some temperate areas, including Europe, there are larger crops of sugar beet. This plant stores sugar in its thickened roots. In some parts of the tropics, the sap of the sugar palm is made into sugar.