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4)liver produce bile juice and it is stored in gall bladder ,it plays an important role in the digestion of foods
5)Villi are small finger-like projections located in the walls of the small intestine. Their function is to increase the surface area in order to maximise the absorption of digested food.
6)The steps involved for processing fibres into wool are shearing, scouring from sheep, sorting, dyeing, straightening, rolling and combing
7) symbiotic--the living together in more or less intimate association or close union of two dissimilar organisms
eg:parasite
saprotrophic--The mode of nutrition in which organisms feed on dead and decaying matter. Example fungi.
Answer:
4:gallbladder .Bile is a fluid that is made and released by the liver and stored in the gallbladder. Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract.
5.small intestine.Villi are small finger-like projections found inside the inner walls of the small intestine. They v increase the surface area for absorption of the digested food. Each villus has a network of thin and small blood vessels close to its surface. The surface of the villi absorbs the digested food materials.
6.Wool is a natural animal fibre which is obtained from animals like sheep, goat, yak etc. that generally live in cold places. These animals have an outer coat of hair on their body which is shaved off to get wool fibres.The steps involved for processing fibres into wool are shearing, scouring from sheep, sorting, dyeing, straightening, rolling and combing.
7:Saprotrophs or saprophytic plants are the plants that depend on dead organic matter for their nutrition. ... The key difference between saprophytic and symbiotic plants is that saprophytic plants depend on dead organic matter for their nutrition while symbiotic plants depend on another organism for their nutrition.