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Rice is an edible cereal grain that is a staple food for over half of the world's human population. It belongs to the grass family Poaceae under the genus Oryza (the botanical name of rice).
- Rice is a type of monocot plant that can be cultivated as a perennial plant and an annual plant.
- It is found in various colours, including white, brown, black, purple, and red rice.
- Rice is divided into two subspecies of crop, namely the sticky, short-grain japonica and the non-sticky, long-grained indica
- It is the most widely grown type of farmed rice in the world, having been domesticated 13,500 to 8,200 years ago in China's Yangtze River region.
- You can enjoy rice with gravy dishes, soups, and many other side dishes.
- Here, we will explore the botanical name of rice along with some important questions.
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Key Terms: Rice, Botanical Name of Rice, Biological Classification of Rice, Oryza, Poaceae, Grass Plant
Botanical Name of Rice
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Oryza sativa is the botanical name for rice paddy. This crop is currently grown for human consumption in two separate species, namely Oryza glaberrima (African Rice) and Oryza sativa (Asian Rice).
- According to some archaeologists in India, rice cultivation is said to have started in the Ganges River Valley.
- It can be cultivated almost anywhere, including on a steep slope or mountain, with the use of water-controlling terrace systems.
- Depending on the type and soil richness, the plant can reach a height of 1–1.8 m (3–6 ft).
- The edible seed is a grain (caryopsis) that is 5–12 mm long (316–1532 in) and 2–3 mm thick (332–18 in).
- Since rice farming is labour-intensive and requires a lot of water, it is best suited to countries and places with low labour costs and copious rainfall.
Botanical Name of Rice
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Biological Classification of Rice
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The biological classification of rice or oryza is as follows:
- Kingdom: Plantae
- Division: Magnoliophyta
- Class: Monocotyledons
- Order: Poales
- Family: Poaceae
- Genus: Cenchrus
Health Benefits of Rice
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Rice is the most significant food crop for human nutrition and caloric consumption, accounting for over one-fifth of all calories consumed globally. Various advantages associated with the consumption of rice are as follows:
Controlling Diabetes
Consuming brown rice can help diabetic patients manage their blood sugar levels, as it aids in blood sugar control. White rice, with a glycemic index of 64 and 55, triggers blood sugar increases.
Cardiovascular Health
Brown rice, for example, has more fibre than processed foods. Fibre has been shown to lower cholesterol and lower the risk of heart disease and stroke.
- It may be easier to maintain a healthy weight since fibre makes you feel full.
- Brown rice also contains vitamins and minerals that aid in delivering oxygen and other critical functions to the blood.
Reduction of Cancer Risk
Brown rice contains three different phenolics, which are antioxidants found naturally in plants. Antioxidants protect cells from free radical damage, lowering the risk of cancer.
- Phenolics can be found in the rice bran layer and the germ, which is the reproductive component of the grain.
- Many phenolics are lost when the bran is removed to generate white rice.
Healthy Digestive System
Brown rice's insoluble fibre encourages regular bowel motions. Haemorrhoids can be avoided, and bowel control can be improved.
- Brown rice is a wonderful alternative for people living with celiac disease because it is gluten-free.
- Celiac disease affects the ability to digest certain grains, making it difficult for sufferers to gain all the required nutrients.
Things to Remember
- Rice also known as oryza sativa is considered a staple food diet of many individuals in our country.
- It is an edible starch cereal grain that consists of 12 chromosomes.
- Rice can be used in cottage industries for the preparation of hats, mats and ropes.
- Soils with a pH between 5.5 and 6.5 are considered suitable for the cultivation of the crop.
- The right time to harvest rice is when its grains are golden yellow in colour and have a ripened percentage of 80-85%.
Also Read:
| Learn more topics in Plant Kingdom | ||
|---|---|---|
| Algae | Phaeophyceae | Cotyledon |
| The Classification of Plants | Endospores | Productivity in Ecosystem |
| Microsporangia | Thallophyte | Gametophyte |
Sample Questions
Ques: Describe the rice farming distribution in India. (3 marks)
Ans: Rice is one of India's most important food crops. After China, India is the world's second-largest rice producer. It is grown on about a quarter of the total cropped land in the country and feeds about half of the people.
- Rice is a plant that grows in tropical climates. It demands a high temperature of around 240C during sowing and harvesting, with minimal variations.
- Punjab, Haryana, and Western Uttar Pradesh, Andhra Pradesh, Orissa, the western and eastern coastal strips, the Brahmaputra Valley, and Jammu and Kashmir are among the places where it is grown.
Ques: How can rice be grown in locations with low rainfall, such as Punjab, Haryana, and Rajasthan? (1 mark)
Ans: Rice can now be grown in Punjab, Haryana, and Rajasthan due to the development of canal irrigation and tube wells.
Ques: How is rice cultivated? (3 marks)
Ans: Rice is a monocot that is cultivated largely as an annual plant, also grown as a perennial plant in tropical areas. Since its farming is labour intensive and requires a lot of water, it is best suited to countries and places with low labour costs and copious rainfall. The crop can be cultivated almost anywhere, including on a steep slope or mountain with the use of water-controlling terrace systems.
Ques: What are the soil requirements for rice? (3 marks)
Ans: Rice can be cultivated in almost all types of soil. According to studies, soil with a pH range of 5.5 to 6.5 is best suited for its cultivation.
- It is a type of semi-aquatic crop that can be cultivated in soils with a good amount of clay and organic matter and good water retention capacity.
- Clay or clay loams are considered more suitable for the cultivation of rice as these types of soil have the highest water holding capacity and thus sustain the crop.
Ques: What is the rice cultivation system in India? (2 marks)
Ans: The rice cultivation system in India are as follows:
- Low land cultivation: It is also known as wet form cultivation. This type of cultivation is practiced where there is an adequate supply of water.
- Semi-dry upland cultivation: It is also known as dry form cultivation. This type of rice cultivation is practised in water-deficient areas.
Ques: Why is the cultivation of rice important for many communities? (3 marks)
Ans: The cultivation of rice is important for many communities as this crop is consumed in most countries.
- It is the main ingredient in many popular food items in India, such as dal-rice and rajma-chawal.
- The crop is also used in many packaged foods, such as noodles, cereal, and flour.
- So, the cultivation of rice is done on a large scale to feed the people who depend entirely on the crop for their daily diets.
Ques. What are the different varieties of rice cultivated in India? (1 mark)
Ans. The different varieties of rice cultivated in India are as follows:
- Jeera Samba
- Kalanamak
- Basmati
- Ponni
- Ambemohar
Ques. How threshing is performed in rice cultivation? (3 marks)
Ans. Threshing is initiated after the rice harvest is completed. In this process, grain seeds are separated from the chaff. Threshing is performed either manually or with the help of a machine. Farmers have small pieces of hold that separate the grain seed by the process of winnowing. Nowadays, it can be performed with the help of a machine called a combine, which can perform the tasks of harvesting and threshing.
Ques. Answer the following: (A) What is another name for Oryza sativa?
(B) What is the color of the seeds of rice? (3 marks)
(B) When talking about the colour of rice seeds, old rice seeds are found in gray and yellow. Mature rice seeds are found in golden yellow colour. Seeds of rice contaminated by fungus are black-yellow or grey-yellow in colour.
Ques. What is red rice? (2 marks)
Ans. Red rice is a long, grainy rice with a slight reddish tinge due to the presence of anthocyanin, a water-soluble pigment. It is available in full-hull or partially hulled varieties. Red rice has a nutty flavour and a high nutritional content compared to polished rice.
Ques. Is rice a type of fruit or a seed? (2 marks)
Ans. Oryza sativa is the plant from which rice is formed. The seeds have a single cotyledon, making them monocotyledons. Seeds contain the required energy and nutrients for the following generation to grow. Seeds sprout when given the right temperature, moisture content, and oxygen content.
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