FRAME
1
Food
is one of the basic requirements of all living organisms. The major components
of our food are carbohydrates, proteins and fats. Vitamins and minerals are
also required in small quantities. Food provides energy and organic materials
for growth and repair of tissues. The water we take in, plays an important role
in metabolic processes and also prevents dehydration of the body.
Biomacromolecules in food cannot be utilised by our body in their original
form. They have to be broken down and converted into simple substances in the
digestive system. This process of conversion of complex food substances to
simple absorbable forms is called digestion and is carried out by our digestive
system by mechanical and biochemical methods.
Q.1.
………………is the process of conversion of complex food substances to absorbable
form.
A.
Respiration
B.
Digestion
C.
Excretion
If you got A , then go to page
no. ….
If
you got B , then go to page no. …
If you got C, then go to page no. …
FRAME
2
The
human digestive system consists of the alimentary canal and the associated
glands. The alimentary canal begins with an anterior opening – the mouth, and
it opens out posteriorly through the anus. The mouth leads to the buccal cavity
or oral cavity. The oral cavity has a number of teeth and a muscular tongue.
Each tooth is embedded in a socket of jaw bone. This type of attachment is
called thecodont.
Q.2.
When teeth are embedded in the jaw bone , it is called……..
A.
Heterodont dentition
B.
Diphyodont dentition
C.
Thecodont dentition
If you got
A , then go to page no. ….
If you got B , then go to page no. …
If you got C, then go to page no.
FRAME
3
An
adult human has 32 permanent teeth which are of four different types
(Heterodont dentition), namely, incisors (I), canine (C), premolars (PM) and
molars (M). The hard chewing surface of the teeth is made up of enamel, the
hardest calcified tissue in the body. It
helps in mastication of food. The tongue is a freely
movable muscular organ attached to the floor of the oral cavity by the
frenulum. The upper surface of the tongue has small projections called
papillae, some of which bear taste buds.
Q.3.
Which is the hardest calcified tissue in the body ?
A.Enamel
B.
Canine
C.
Frenulum
If you got A , then go to page
no. ….
If you got B , then go to page
no. …
If you got C, then go to page no. …
FRAME
4
The
oral cavity leads into a short pharynx which serves as a common passage for
food and air. The oesophagus and the trachea (wind pipe) open into the pharynx.
A cartilaginous flap called epiglottis prevents the
entry of food into the glottis during swallowing. The oesophagus is a thin,
long tube which extends posteriorly passing through the neck, thorax and
diaphragm and leads to a ‘J’ shaped baglike structure called stomach. A
muscular sphincter (gastro-oesophageal) regulates the opening of oesophagus into
the stomach. Small intestine is distinguishable into three regions, a ‘C’
shaped duodenum, a long coiled middle portion jejunum and a highly coiled
ileum.
Q.4.
Name the structure which prevents the entry of food into the glottis during swallowing.
A.
Pyloric sphincter
B.
Vermiform appendix
c.
Epiglottis
If you got A , then go to page
no. ….
If you got B , then go to page no. …
If you got C, then go to page no. …
FRAME
5
The opening of the stomach into the duodenum is
guarded by the pyloric sphincter. Ileum opens into the
large intestine. It consists of caecum, colon and rectum. Caecum
is a small blind sac which hosts some symbiotic micro-organisms. A narrow finger-like tubular projection, the vermiform
appendix which is a vestigial organ, arises from the caecum. The caecum
opens into the colon. The descending part opens into the rectum which opens out
through the anus.
Q.5.
Name the part of large intestine which hosts some symbiotic micro-organisms.
A.Colon
B.
Caecum
C.
Rectum
If you got A , then go to page no. ….
If you got B , then go to page no. …
If you got C, then go to page no. …
Q.1
Option A
Sorry,
Your Answer is wrong …try again
Respiration
is the process by which cells use oxygen to break down sugar and obtain energy.
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back to Frame 1 page no.
Q.1
Option B
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Your Answer is correct
Digestion
is the process of conversion of complex
food substances to simple absorbable forms
Now proceed
to Frame 2 page no.
Q.1
Option C
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Your Answer is wrong …try again
Excretion
is the process of eliminating or expelling waste matter.
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back to Frame 1 page no.
Q.2.
Option A
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Your Answer is wrong …try again
A
set of teeth of various shapes that may serve different functions is called
heterodont dentition.
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back to Frame 2 page no.
Q.2.
Option B
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Your Answer is wrong …try again
Diphyodont
is a type of dentition in which two successive sets of teeth are developed
during the lifetime of the organism.
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back to Frame 2 page no
Q.2.
Option C
Wow,
Your Answer is correct
Each
tooth is embedded in a socket of jaw bone. This type of attachment is called
thecodont.
Now proceed
to Frame 3, page no.
Q.3.
Option A
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Your Answer is correct
The hard chewing surface of the teeth is made
up of enamel, the hardest calcified tissue in the body.
Now
proceed to Frame 4 , page no.
\
.3.
Option B
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Your Answer is wrong …try again
Canine
is aa pointed tooth between the incisors and premolars of a mammal, often
greatly enlarged in carnivores.
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Q.3.
Option C
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Your Answer is wrong …try again
The
tongue is a freely movable muscular organ attached to the floor of the oral
cavity by the frenulum.
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back to Frame 3, page no.....
Q.4
. Option A
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Your Answer is wrong …try again
The
opening of the stomach into the duodenum is guarded by the pyloric sphincter.
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back to Frame 4, page no
Q.4.
Option B
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A narrow finger-like tubular
projection, the vermiform appendix which is a vestigial organ, arises from the
caecum. Go back to Frame 4, page no.
Q.4.
Option C
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Your Answer is correct
A
cartilaginous flap called epiglottis prevents the entry of food into the
glottis during swallowing.
Now
proceed to Frame 5, page no.
Q.5
. Option A
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The
longest part of the large intestine (a tube-like organ connected to the small
intestine at one end and the anus at the other).
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back to Frame 5, page no.
Q.5.
Option B
Wow,
Your Answer is correct
Caecum
is a small blind sac which hosts some symbiotic micro-organisms.
Now
proceed to Frame 6 , page no.
Q.5.
Option C
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The rectum is the last several inches
of the large intestine. Go back to Frame 5,
page no.
FRAME
6 CONGRATULATIONS
YOU
HAVE COMPLETED SUCCESSFULLY
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