Topic: Nutrition
Worksheet – II
(PREVIOUS YEAR
QUESTIONS)
VERY SHORT ANSWER TYPE QUESTIONS [1 mark
each]
1.
Define: Peristaltic movement
2.
What is the role of saliva in digestion
of the food?
3.
What is emulsification?
4.
Where does digestion of fat takes place
in our body?
5.
State the location and the functions of
the gastric glands.
6.
What is the role of acid in our stomach?
7.
State the functions of digestive
enzymes.
8.
Mention the site of complete digestion
of carbohydrates, fats and proteins in human.
9.
Name the green dot-like structures in
some cells observed by student when a leaf peel was viewed under a microscope.
What is this green colour due to?
10.
In the experiment “light is necessary
for photosynthesis” why does uncovered part of the leaf turn blue-blank after
putting iodine solution?
11.
Mention how the organisms like bread
mould and mushrooms obtain their food?
12.
What is the mode of nutrition in human
beings?
13.
Where do plants get each of the raw
materials required for photosynthesis?
14.
How do autotrophs take CO2 and
N2 to make their food?
15.
Which pancreatic enzyme is effective in
digestion of proteins?
16.
Which enzyme present in saliva breaks down starch?
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17.
What
are the outside raw materials used by an organism?
What
are the outside raw materials used by an organism?
18.
Study the following diagram:
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Name the parts
labelled ‘A’ and ‘B’ and state the function of each
SHORT ANSWER TYPE-I [2 marks each]
1. What
are the final products of carbohydrates and proteins?
2. What
is saliva? State its role in digestion of food.
3. Explain
the process of nutrition in amoeba.
4. 
Given
below the experimental set-up to establish that one of the atmospheric gases is
necessary for photosynthesis in plants.
Given
below the experimental set-up to establish that one of the atmospheric gases is
necessary for photosynthesis in plants.
a) Name
the atmospheric gas which is essential for photosynthesis.
b) What
is kept in watch glass and why?
5. How
are fats digested in our body? Where does this process take place?
6. How
is small intestine designed to absorb digested food?
7. Draw
the diagram of an open stomatal pore of a leaf and label on it chloroplast and
guard cells.
8. Is
nutrition a necessity for an organism? Discuss.
9. Which
is the internal energy reserve in plants? Do animals have the same energy
reserve?
10. What
would happen if green plants disappear from the earth?
11. Why
does herbivores have longer small intestine than carnivore?
12. Mention
the site of complete digestion in our body? Name the end products formed on
complete digestion of carbohydrates, fats and proteins.
13. Explain
the significance of peristaltic movement that occur all along the gut during
digestion.
14. Why
does medium become acidic in mouth? what is the ill effect of acidic medium in
mouth? How can this be prevented?
15. What
function is served by the following?
a. Gastric
sphincter
b. Anal
sphincter
16. Some
finger-like projections are present in the inner wall of small intestine. Write
their names? Why are they important?
SHORT ANSWER TYPE-II [3 marks each]
1. State
differences between autotrophic and heterotrophic modes of nutrition.
2. Write
the events that occur during photosynthesis.
3. State
the necessary conditions for autotrophic nutrition and name the by product. Mention
the source of this by product.
4. Describe
the heterotrophic nutrition and give its examples. Name the three types of this
nutrition.
5. Where
does digestion start in alimentary canal? Name the enzyme secreted in that part
and write its functions.
6. Name
the three different glands associated with the digestive system in human. Also
name their secretions.
7. A)
Name the extensively coiled structure of alimentary canal.
B) Compare the length of small
intestine in herbivores and carnivores
8. In
human alimentary canal, name the site of complete digestion of various
components of food. Explain the process of digestion in it.
9. The
inner linings of the small intestine has numerous finger-like projections. What
are they called? List their functions.
10. Name
the following.
a. Where
food is completely digested?
b. Juice
that contains trypsin enzyme
c. Gland
that secrets bile juice
d. Part
that absorbs water from undigested food
e. Two
secretions released by gastric glands
11. A)
List two functions performed by dilute HCl in stomach.
B) Name the raw
materials required for photosynthesis.
12. List
the role of each of the following in digesting food.
a. Muscles
of walls of stomach
b. HCl
c. Mucus
13. Explain
the role of bile juice in digestion of food. Name the enzymes present in
pancreatic juice and give their functions.
14. A.
State two sources from which plants obtain Nitrogen for synthesis of proteins
and other components.
B. Name the process by which
autotrophs prepare their own food.
LONG ANSWERS TYPE QUESTIONS [5
marks each]
1. a.
Draw a diagram to show open stomatal pore and label on it (i) guard cell and
(ii) chloroplast
b. State two functions of stomata
c. how do guard cells regulate opening
and closing of stomatal pore?
2. A.
Draw a diagram depicting human alimentary canal and label on it: gall bladder,
liver, pancreas
B. State the roles of liver and pancreas
C. Name the organ which performs
following functions in human
i. absorption of digested food
ii. absorption of water
3. A.
Draw a diagram to show nutrition in amoeba and label the parts used for this
purpose. Mention any other purpose served by this part other than nutrition.
B. Name the glands associated with
digestion of starch in human digestive tract and mention their role.
C. How is the required pH
maintained in stomach and small intestine?
4. A.
What are the raw materials used during photosynthesis ? write chemical equation
for photosynthesis.
B. leaves of a healthy potted plant
are covered with Vaseline to block the stomata. Will this plant remain healthy
for longer time? State 3 reasons for your answer.
5. A. Describe an experiment to show that ‘
sunlight is essential for photosynthesis’
6. Explain
the process of digestion in mouth, stomach and small intestine in human body.
7. A.
State the form in which the following are stored
i.
Unused carbohydrates in plants
ii.
The energy derived from food in humans
B. how does paramecium
obtain its food?
Topic: Respiration
(PREVIOUS YEAR
QUESTIONS)
VERY SHORT ANSWER TYPE QUESTIONS [1 mark each]
1.
Give one reason why multicellular
organisms require special organs for exchange of gases between their body and
their environment?
2.
Name the intermediate and end products
of glucose breakdown in aerobic respiration.
3.
Why do aquatic animals breathe faster
than terrestrial?
4.
What advantage over aquatic organism
does terrestrial organism have with regard to obtaining oxygen for respiration?
5.
Name the two ways in which glucose is
oxidised to provide energy in various organisms.
SHORT ANSWER TYPE-I [2 marks each]
1.
How
are alveoli designed to maximise the exchange of gases?
2.
In the test tube A and B, yeast was kept
in sugar solution. Which products of respiration would you expect in tubes A
and B?
3.
Write one feature which is common to
each of the following pairs of terms/organs.
i.
Glycogen and starch
ii.
Chlorophyll and haemoglobin
iii.
Gills and lungs
iv.
Arteries and veins
SHORT ANSWER TYPE-II [3 marks each]
1.
A. ‘The breathing cycle is a rhythmic
whereas exchange of gases is a continuous process’ justify
B.
Name the two ways in which glucose is oxidized to provide energy in various
organisms.
2.
Explain tthe breakdown of glucose in
cell
i.
In presence of oxygen
ii.
In absence of oxygen
3.
Write any 3 differences between aerobic
and anaerobic respiration.
LONG ANSWERS TYPE QUESTIONS [5 marks each]
1. A.
Draw a diagram of human respiratory system and label on it
i. Larynx ii. Trachea
iii. Lungs iv. Bronchi
B. why do the walls of the trachea
not collapse when there is less air in it?
2. A.
Draw a diagram of human respiratory system and label the following
i.
Part where air is filtered by fine hair and
mucus
ii.
Part which terminates in balloon like
structures
iii.
Balloons like structures where gases
exchange
iv.
Part which separates chest cavity from
abdominal cavity
B. Why is the rate of breathing much faster
than terrestrial animals?
3. A.
Draw a labelled diagram of respiratory system of human being with diaphragm at
the end of expiration
B. List four conditions required
for efficient gas exchange in an organism.
4. A.
Complete the glucose breakdown pathway in case of aerobic respiration by
filling the blanks
......3..... .....4......
.....5..... + .....6..... + energy
B. Name the molecule in the cell
which stores the energy produced at the end of the pathway.
C. Why do we get cramps during
vigorous muscular activity?
5. What
is meant by breathing ? what happens to the rate of breathing during vigorous
exercise and why?
Topic: Transportation
& Excretion
Worksheet – I
(PREVIOUS YEAR
QUESTIONS)
VERY SHORT ANSWER TYPE QUESTIONS [1 mark each]
1.
Name the component of blood that helps
in formation of blood clot in the event of a cut.
2.
What happens to a plant if its xylem is
removed?
3.
Name the tissue that transports the
soluble products of the photosynthesis in the plant.
4.
What process in plants is known
transpiration?
5.
Name the tissue that transports water
and minerals in the plants.
6.
What is osmoregulation?
7.
Which organ synthesises urea?
8.
What are excretory units of kidneys?
9.
What causes liquid part of blood to
filtrer out from glomerulus into renal tubule?
10.
What is transported by lymph?
11.
Name the components of blood that
transports
i.
Food, CO2 and nitrogenous
waste
ii.
Oxygen
12.
Name the process of loss of water in the
form of water vapour from aerial parts of the plants.
13.
Why is wall of ventricle thicker than
the walls of atria?
14.
Name the largest artery in the human
body.
15.
What is translocation?
16.
Name two processes that are responsible
for urine formation.
17.
Name the respiratory pigment in human.
18.
Name the factors on which the amount of
water reabsorbed along the tubular part of nephron depend on.
19.
What happens to the glucose that enters
the nephron along with the filtrate?
Topic: Transportation
& Excretion
Worksheet – II
(PREVIOUS YEAR
QUESTIONS)
SHORT ANSWER TYPE-I [2 marks each]
1.
What is the advantage
of four chambered heart in human?
2.
Why is blood circulation in human is
called double circulation?
3.
Why do veins have thin walls than
arteries?
4.
Differentiate between blood and lymph.
5.
How is the process of transpiration
useful to plants?
6.
State the differences between transport
of materials in xylem and phloem.
7.
Name the materials transported by the
following.
i.
Xylem
ii.
Pulmonary artery
iii.
Pulmonary vein
iv.
phloem
8.
Which mechanism plays an important role
in transportation of water in plants?
i.
During day time
ii.
During night time
9.
What is translocation? How it takes
place in plants?
10.
Why is it necessary to separate
oxygenated blood from deoxygenated blood in mammals and plants?
11.
Write one feature of which is common in
each of the following pairs of terms/organs.
i.
Glycogen and starch
ii.
Chlorophyll and haemoglobin
iii.
Gills and lungs
12.
Write one function of each of the
following component of transport system in human
i.
Blood vessels
ii.
Blood platelets
iii.
Lymph
iv.
Heart
13. Tabulate differences between arteries and
veins.
14.
Describe in brief the function of
kidneys, Ureter, urinary bladder and urethra.
15.
list four conditions required for
efficient gas exchange in an organism
Topic: Transportation
& Excretion
Worksheet – III
(PREVIOUS YEAR
QUESTIONS)
SHORT ANSWER TYPE-II [3 marks each]
1. List
three kinds of blood vessels in human circulatory system and write one function
of each of them.
2.
What
happens if circulatory system develops leak? State in brief, how could it be
avoided?
3. Draw
a diagram of front view of heart and label six parts including at least two
that are concerned with arterial blood supply to the heart muscle.
4. Label
any four parts in given diagram.
5. What
is double circulation in human beings? Why is it necessary?
6. Define
transpiration and state its two functions.
7. Explain:
i.
Blood goes once through the heart in
fishes.
ii.
Plants have low energy needs.
iii.
What are capillaries?
8. a.
What is lymph?
b.
How is composition of lymph different from plasma?
c.
List any two functions of lymphatic system.
9. Describe
the process of double circulation in human.
10. i.
Mention the site of exchange of materials between the blood and surrounding
cells.
ii. Draw a schematic representation of exchange
of oxygen and carbon dioxide in human.
11. What
would be the consequences of deficiency of haemoglobin in our body ?
12. ‘Stomata
remains closed in desert plants during day time’ how do they
photosynthesis?
13. Draw
a labelled diagram of human excretory system. List two vital functions of
kidneys.
14. Draw
a labelled diagram of excretory unit of human kidney. Write the importance of structural
and functional unit of kidneys.
15. A.
How is urine produced? b. name
two excretory products other than O2 and CO2
16. State
the functions of the following components of the transport system
a. Blood b.
Lymph
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