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Biology Notes on Human Digestive System

  Digestive System: A digestive system is a group of organs which work to convert the food into basic nutrients for feeding energy to the whole body. Human does not produce its own food like plants and depend on other plants and animals for food, hence called  Heterotroph . Human needs various nutrients, proteins and vitamins which are derived from food through digestion. Chewing, in which food is mixed with saliva begins the process of digestion. This produces a bolus which can be swallowed down the oesophagus and into the stomach. The complete process of nutrition is divided into five stages: Ingestion Digestion Absorption Assimilation Defecation Ingestion: The process of  taking food, drink or any other substance  into the body by swallowing and absorbing it, is known as Ingestion. Digestion: Digestive system contains six components which are as follow- Mouth Oesophagus Stomach The small intestine Colon (large intestine) Rectum Digestion is a process through the large insoluble and

biology -body Health and Hygiene

Health and Hygiene I Choose the correct answer 1. Our body needs ______ for muscle- building a) carbohydrate b) fat  c) Protein  d) Water 2. Scurvy is caused due to the deficiency of________. a) Vitamin A b) Vitamin B  c) Vitamin C  d) Vitamin D 3. Calcium is an example of a _________. a) carbohydrate b) fat c) Protein  d) minerals 4. We should include fruits and vegetables in our diet, because_______. a) They are the best source of Carbohydrates b) They are the best source of Proteins c) They are rich in minerals and Vitamins d) They have high water content 5. Bacteria are very small _______ microorganism. a) Prokaryotic  b) Eukaryotic c) Protozoa d) A cellular II True or False 6. There are three main nutrients present in food. Ans:  True  (Proteins ,carbohydrates and fats) 7. Fats are used as an energy store by our body. Ans:  True 8. All bacteria have flagella. Ans:  False 9. Iron helps in the formation of haemoglobin. Ans:  True 10. Vir

Interesting Facts and bio details about Milk

Milk is an excellent source of vitamins and minerals, particularly calcium. It has long been recognised for its important role in bone health. Nutritionists recommend that milk and other dairy products should be consumed daily as part of a balanced diet. There is some inaccurate information around in the general community about the health benefits of milk. Changing your milk intake on the basis of these fallacies may mean you are unnecessarily restricting this highly nutritious drink. MILK CONTAINS MANY DIFFERENT NUTRIENTS Milk and milk products contain a good balance of protein, fat and carbohydrate and are a very important source of essential nutrients including: Calcium Riboflavin Phosphorous Vitamins A, D and B12 Pantothenic acid Milk products also contain ‘high-quality proteins’ that are well suited to human needs. Milk proteins increase the value of poorer quality cereal and vegetable proteins in the diet by providing the amino acids these proteins lack

biology set 3

Q1.  Peanut plant is the  peanut  plant  (a) Herb / Drug  (b) Flower / Flowers  (c) Bush / Chandeloft  (d) None of these / None of these Show Answer Ans.(a) Sol. Peanut plant is a dicotyledonous herbaceous herb and an annual plant. The pea plant may adapt to a variety of growing conditions, but it prefers cool damp weather with temperature ranging from 60 to 75 degree Fahrenheit. It belongs to a large family of plants, the fabaceae or Leguminosae. Q2.  The   stem is cut to increase _____ generally, to stem cutting.  (a) Banana / Banana  (b) Sugarcane / Sugarcane  (c) Mango / Common  (d) Cotton / Cotton Show Answer Ans.(b) Sol. Botanically, Sugarcane belongs to the Andropogonae tribe of the family Gramineae. Sugarcane plants are propagated by stem cutting. Stem cutting is segmented parts of the stem or entire stems detached from the main branch. Q3  Clove is  a - Long   is one-  (a) Buds of stem / Stem bud  (b) Bales of root / Knot of root  (c) Closed buds / Closed bud  (d) S