Nutrition in Animals
Q -1 Fill in the blanks.
(a) The main steps of digestion in humans are _____ ____ _____ _____ ______
Answer - The main steps of digestion in humans are
Ingestion
digestion
absorption
assimilation
egestion
b. The largest gland in human body is _______
Answer- The largest gland in human body is
liver.
c. The stomach releases hydrochloric acid and _____ juices
which act on food.
Answer- The stomach releases hydrochloric acid and
digestive juices
which act on food.
d. The inner wall of the small intestine has many finger
like structure called _______.
Answer- The inner wall of the small intestine has many finger like structure
called
villi.
e. Amoeba digest its food in the ________
Answer – Amoeba digest its food in the
vacuoles.
Q - 2 - Mark T if the statement is true
and F if it is false.a. Digestion of starch starts in the stomach.
Answer - F
b. The tongue helps in mixing food with sliva.
Answer - T
c. The gall bladder temporarily stores bile.
Answer - T
d. The ruminants bring back swallowed grass into their
mouth and chew it for some time .
Answer - T
Q - 3 - Tick (√) mark the correct answer
in each of the following.a. Fat is completely digested in the
(a) Stomach
(b) Mouth
(c) Small intestine
(d) Large intestine
Answer - (c)Small intestine
b. Water from the undigested food is absorbed mainly in
the (a) stomach
(b) food pipe
(c) Small intestine
(d) Large intestine
Answer - (d)Large intestine
Q - 4 - Match the column
Q - 5 - What are villi? What is their location and function.
Answer - Villi is the finger like projections. These
are found in the inner walls of small intestine. It helps in absorption of the
digested food.
Q- 6 -Where is the bile produced? Which component of the
food does it digest?
Answer - Bile is produced in the liver. Bile helps in digestion of fats.
Q -7- Name the type of carbohydrate
that can be digested by ruminants but not by humans. Give the reason also.
Answer - Cellulose is the type of carbohydrates which
is digested in ruminants but not in humans. Ruminants have a large sac –like
structure between the small intestine and large intestine, in which cellulose of
the food is digested by the action of certain bacteria. Such structure is not
present in human. Hence human cannot digest cellulose while ruminants can.
Q- 8 - Why do we get instant energy from glucose?
Answer - Glucose is simple sugar so there is no need
of digestion. It directly reaches the cells where it gives energy after
respiration.
Q -9 - Which part of the digestive canal is involved in:(a) Absorption of food ________
(b) Chewing of food ________
(c) Killing of bacteria ________
(d) Complete digestion of food _______
(e) Formation of faeces _________
Answer -
(a) Small Intestine
(b) Mouth
(c) Stomach
(d) Small Intestine
(e) Large Intestine
Q - 10 - Match the following column
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