_(i) are the finger-like projections in the _(ii)___ that increase the surface area for absorption of food.

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Solution

Villi are present in the walls of the small intestine.

Villi increases the surface area of the small intestine.

This helps to increase the absorption of the nutrients.

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A unicellular animal P having no fixed shape ingests a food particle by forming temporary finger-like projections Q. The food particle is engulfed with a little surrounding water to form a temporary stomach R inside it. The chemicals S from surrounding cytoplasm enter into R and break down food into small and soluble molecules by chemical reactions. The digested food is absorbed directly into the cytoplasm by the process T. The undigested food is thrown out of the body by the rupture of a cell organelle U in a process called V.
(a) Name the unicellular animal P.
(b) What are (i) Q and (ii) R?
(c) Name (i) chemical S, and (ii) process T.
(d) Name (i) organelle U, and (ii) process V.

The partially digested food coming from the stomach of a person enters a long and narrow organ A in his body. The organ A receives the secretions of two glands: liver and pancreas. The liver secretes a greenish-yellow liquid B which is normally stored in the organ C. Pancreas secretes pancreatic juice which contains three digestive enzymes D, E and F. The intestinal juice completes the process of digestion of food. The inner wall of organ A has millions of tiny finger-like projections G which help in the rapid absorption of digested food into the bloodstream. The undigested part of food then passes into wider tube H which absorbs most of the water from undigested food. The last part of tube H called I stores this undigested food (or waste) for some time. The undigested food is then passed out through opening J as faeces in the process known as K.
(a) Name the organ A.
(b) Name (I) liquid B, and (ii) organ C.
(c) What are the digestive enzymes D, E and F?
(d) Name the projections G present on the inner wall of organ A. (e) Name (i) tube H (ii) part I (iii) opening J, and (iv) process K

Q. Finger-like projections that increase the surface area for absorption are called ________.

Q. Villi are the finger-like projections in the small intestine that increase the surface area for absorption of food.

Q. Finger-like projections in the small intestine increases the surface area for absorption of food.

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_____(i)______ are the finger-like projections in the _____(ii)_____ that increase the surface area for absorption of food.

Villi are present in the walls of the small intestine. Villi increases the surface area of the small intestine. This helps to increase the absorption of the nutrients.

_(i) are the finger-like projections in the _(ii)___ that increase the surface area for absorption of food.

Villi are present in the walls of the small intestine.

Villi increases the surface area of the small intestine.

This helps to increase the absorption of the nutrients.