1) The autotrophic mode of nutrition requires: [1]
a) Sunlight
b) All of these
c) Carbon dioxide and water
d) Chlorophyll
2) On complete digestion of fats, the end products are [1]
a) Glucose and amino acids
b) Fatty acids and glycerol
c) Glucose and glycerol
d) Fatty acid and amino acids
3) Anaerobic process [1]
a) Takes place in yeast during fermentation
b) Produces only energy in the muscles of human beings
c) Takes place in the presence of oxygen
d) Produces ethanol, oxygen, and energy
4) Which of these reactions occurs during photosynthesis?
a) Carbon dioxide and water are both oxidized
b) Carbon dioxide and water are both reduced
c) Water is reduced and carbon dioxide is oxidized
d) Carbon dioxide is reduced and water is oxidized
5) The internal (cellular) energy reserve in autotrophs is [1]
a) Protein b) Glycogen
c) Starch d) Fatty acid
6) The given figure shows the pathway of a nerve impulse
in a reflex action. Which part serves as a link between
neurons?
a) X b) W c) Z d) Y
7) An organism which breaks down the food material outside
the body and then absorbs it is [1]
a) A bacteria, Rhizobium
b) A plant parasite, Cuscuta
c) An animal parasite, Tapeworm
d) A fungi, Rhizopus
8) The filtration units of kidneys are called [1]
a) Neurons b) Nephrons
c) Ureter d) Urethra
9) During contraction of heart, what prevents back flow of
blood? [1]
a) Thin walls of atria
b) Valves in heart
c) Thick muscular walls of ventricles
d) All of the these
10) Experiment to show that CO2 is given out during respiration, the type of respiration is: [1]
a) Aerobic
b) Anaerobic
c) Neither Anaerobic nor aerobic
d) Both anaerobic and aerobic
11) Which of the following equations is the summary of
photosynthesis? [1]
a) 6CO2 + 12H2O → C6H12O6 + 6O2 + 6H2O
b) 6CO2 + 12H2O + Chlorophyll + Sunlight →
C6H12O6 + 6CO2 + 6H2O
c) 6CO2 + 12H2O + Chlorophyll + Sunlight →
C6H12O6 + 6O2 + 6H2O
d) 6CO2 + H2O + Sunlight → C6H12O6 + O2 + 6H2O
12) When iodine was added to a particular vegetable that
had been crushed into a paste, blue – black colour was
obtained. This indicates the presence of [1]
a) Starch b) Glucose
c) Protein d) Sugar
13) During vigorous exercise, the occurrence of cramps in the
outer muscles of an athlete is due to the conversion of
pyruvate to: [1]
a) Lactose b) Glucose
c) Lactic acid d) Ethanol
14) The process in which loss of water in the form of vapours
from the aerial parts of plants takes place is X, which
helps in Y. Here X and Y respectively are: [1]
a) Transpiration and photosynthesis.
b) Translocation and absorption of water and minerals
from soil by roots.
c) Translocation and movement of soluble products of
photosynthesis in phloem.
d) Transpiration and temperature regulation.
15) In which part of the alimentary canal food is finally
digested? [1]
a) Large intestine b) Stomach
c) Mouth cavity d) Small intestine
16) Water in the root enters due to: [1]
a) The function of the root to absorb water.
b) Diffusion of water in the roots.
c) Difference in the concentration of ions between the
root and the soil.
d) Excess water present in the soil.
17) The final product of glycolsis is [1]
a) Pyruvic acid b) Glucose
c) Malic acid d) Acetyl COA
18) Which of the following statements are correct regarding
transpiration?
i. The rate of transpiration is directly proportional to
the relative humidity.
ii. It regulates plant temperature.
iii. Very low temperature, closes stomata and hence decreases rate of transpiration.
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iv. It causes ascent of sap.
[1]
a) (i), (ii) and (iv) only
b) (ii), (iii) and (iv) only
c) (i), (ii) and (iii) only
d) (i) and (iv) only
19) Which of the following enzyme helps in breaking sucrose
into glucose and fructose? [1]
a) Invertase b) Zymase
c) Diastase d) Maltase
20) Name a plant that does not have a transport system. [1]
a) Banana tree b) Mango tree
c) Chlamydomonas d) Banyan tree
21) Oxygen liberated during photosynthesis comes from [1]
a) Glucose b) Chlorophyll
c) Water d) Carbon dioxide
22) The process in which transport of soluble products of
photosynthesis takes place in plants is known as: [1]
a) Translocation b) Conduction
c) Transpiration d) Evaporation
23) In the experiment to demonstrate that CO2 is given out
during respiration, what would you observe in the delivery
tube dipped in water? [1]
a) Water turns milky but does not rise in the delivery
tube.
b) Water level in the delivery tube remains unchanged.
c) Water turns milky and rises in the delivery tube.
d) Water level rises in the delivery tube.
24) Which part of alimentary canal receives bile from the
liver? [1]
a) Large intestine b) Oesophagus
c) Small intestine d) Stomach
25) The process of photosynthesis occurs in: [1]
a) Infrared radiation b) UV radiation
c) Dark d) Visible light
26) Sita is supposed to face an interview. During the first
five minutes before the interview she experiences sweating, increased rate of heartbeat, increased respiratory rate,
etc. Which of the following hormones has increased in
her blood and is responsible for her restlessness [1]
a) Adrenaline b) GnRH
c) Insulin d) Estrogen
27) Choose the function of the pancreatic juice from the
following [1]
a) Trypsin digests emulsified fats and lipase proteins
b) Trypsin digests proteins and lipase carbohydrates
c) Trypsin and lipase digest fats
d) Trypsin digests proteins and lipase emulsified fats
28) Which of these is not a part of the small intestine? [1]
a) Jejunum b) Ileum
c) Duodenum d) Rectum
29) Which of the following is most appropriate for aerobic
respiration? [1]
a) Glucose cytoplasm
−−−−−−→ pyruvate + Energy mitochondria
−−−−−−−−−→
CO2+ H2O + Energy
b) Glucose cytoplasm
−−−−−−→ pyruvate + Energy mitochondria
−−−−−−−−−→
CO2+ H2O
c) Glucose cytoplasm
−−−−−−→ pyruvate mitochondria
−−−−−−−−−→ CO2+
H2O + Energy
d) Glucose mitochondria
−−−−−−−−−→ pyruvate
cytoplasm
−−−−−−→ CO2+
H2O + Energy
30) A few drops of iodine solution were added to rice water.
The solution turned blue – black in colour. This indicates
that rice water contains [1]
a) Starch b) Complex proteins
c) Fats d) Simple proteins
31) The process complementary to respiration is . [1]
a) Photosynthesis b) Transpiration
c) Circulation d) Osmoregulation
32) Name a body part where anaerobic respiration takes place.
[1]
a) Cytoplasm b) Mitochondria
c) Chloroplast d) Protoplasm
33) Refer to the following figure of phloem tissue. Which of
the following statements correctly describes the relationship between cells Y and Z?
[1]
a) Y provides the carbohydrates that are transported by
Z.
b) Ycontains ribosomes that synthesise proteins required
by Z.
c) Y transports sucrose, while Z transports water and
minerals.
d) Y helps to filter the liquid transported in Z to facilitate translocation.
34) Seeds taken in the conical flask during respiration experiment must be [1]
a) Dry gram seeds
b) Boiled gram seeds
c) Wet gram seeds
d) Germinating gram seeds
35) What are the end products of fat digestion? [1]
a) Amino acid, fatty acid
b) Glycerol, amino acid
c) Fatty acid, glycerol
d) Glucose, amino acid
36) Which is the correct sequence of parts in the human
alimentary canal? [1]
a) Mouth→ oesophagus → small intestine → large
intestine
b) Mouth→ stomach → small intestine → oesophagus → large intestine
c) Mouth→ oesophagus → stomach → large intestine → small intestine
d) Mouth→ oesophagus → stomach → small intestine → large intestine
37) Opening and closing of stomata is due to [1]
a) Diffusion of CO2 in and out of the guard cells.
b) High pressure of gases inside the cells.
3
c) Stimulus of light in the guard cells.
d) Movement of water in and out of the guard cells.
38) The pancreatic juice does not contain one of the following
enzymes. [1]
a) Lipase b) Trypsin
c) Ptyalin d) Amylase
39) Which of the following precautions are to be taken for
a successful run of the experiment to show that carbon
dioxide is given out during respiration?
i. Cork should be airtight.
ii. Seeds in the flask should be totally dry.
iii. A small tube with a freshly prepared KOH solution
should be placed in the flask.
iv. The end of the delivery tube should be above water
level.
The correct answer is [1]
a) A, B and D b) A and B
c) A, B and C d) A and C
40) In submerged water plants like Hydrilla: [1]
a) Carbon dioxide is not needed for photosynthesis
b) Light is necessary for photosynthesis
c) Photosynthesis does not occur
d) Light is not needed for photosynthesis
41) Which is the first step of photosynthesis? [1]
a) Excitation of electron of chlorophyll
b) Attachment of CO2 to 5 – carbon sugar
c) Formation of ATP
d) Ionization of water
42) Name the passage that leads bile from the liver into the
gall bladder. [1]
a) Colon b) Cystic duct
c) Caecum d) Rectum
43) Some raisins weighed 10 gm before they were placed in
water for four hours. The raisins were then removed,
wiped and weighed again. Their weight was now found
to be 12.5 gm. The percentage of water absorbed by
them is [1]
a) 5% b) 25%
c) 12.5% d) 2.5%
44) To observe stomata under microscope Swati took the leaf
peal from Tradescantia leaf from lower surface of leaf:
[1]
a) She should take from upper surface
b) She should not take from leaf surface
c) She should take from tip of the leaf
d) She had taken the correct surface for leaf peel
45) Which liquid did a student use for putting a drop on
the slide before placing the coverslip while preparing a
temporary mount of leaf epidermal peel? [1]
a) Safranin b) Iodine
c) Glycerine d) Water
46) The teacher instructed the student to place a healthy potted
shoe flower plant in a dark room for 24 hours prior to
an experiment on photosynthesis. The purpose of placing
it in a dark room is: [1]
a) To activate the chloroplasts in the leaves
b) To denature the enzymes in the leaves
c) To increase the intake of carbon dioxide
d) To destarch the leaves
47) During deficiency of oxygen in tissues of human beings,
pyruvic acid is converted into lactic acid in the [1]
a) Mitochondria b) Cytoplasm
c) Golgi body d) Chloroplast
48) Which of the following component of our food is digested
by an enzyme which is present in saliva as well as in
pancreatic juice? [1]
a) Fats b) Proteins
c) Carbohydrates d) Minerals
49) The function of KOH in the experimental set – up to
show that CO2 is released during respiration is [1]
a) To remove water vapour from the flask
b) To absorb carbon dioxide released by germinating
seeds
c) To enhance respiration
d) To release oxygen for respiration
50) The energy – rich compound produced through respiration
is [1]
a) ADP b) Pyruvic acid
c) ATP d) AMP
51) A factor not affecting photosynthesis is [1]
a) Wind velocity
b) Light intensity
c) Temperature
d) Carbon dioxide concentration in air
52) To prepare a good temporary mount of the petunia leaf
peel showing many stomata, the student has to get the
peel from the [1]
a) Point of attachment of the leaf to its petiole.
b) Lower surface of the leaf
c) Tip of the leaf
d) Upper surface of the leaf
53) In the experiment, to show CO2 is given out during respiration. Atul put boil gram seeds in a conical flask.
According to his observation, the water level in the bent
tube: [1]
a) Rise or decreases in water level depends on the
room temperature
b) Rises
c) Decreases
d) Remains the same
54) Single circulation i.e., blood flows through the heart only
once during one cycle of passage through the body, is
exhibited by [1]
a) Whale, Dolphin, Turtle
b) Hyla, Rana, Draco
c) Hippocampus, Exocoetus, Anabas
d) Labeo, Chameleon, Salamander
55) Which of the following is not correctly paired with its
function? [1]
a) Pons – Regulates respiration
b) Medulla oblongata – Controls rate of heart beat
c) Temporal lobe – Auditory reception
d) Parietal lobe – Visual reception
56) In the experiment to show that carbon dioxide is released
during respiration the small test tube of KOH solution is
suspended inside the conical flask to absorb the: [1]
a) Oxygen of the flask.
b) Moisture of the flask.
c) Air of the flask.
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d) Carbon dioxide of the flask released by the seeds.
57) In human beings, when the process of digestion is completed, the (i) proteins, (ii) carbohydrates, and (iii) fats
are respectively finally converted into: [1]
a) Amino acids, (ii) glucose and (iii) fatty acids
b) Glucose, (ii) fatty acids and glycerol, (iii) amino
acids
c) Sugars, (ii) amino acids, (iii) fatty acids and glycerol
d) Amino acids, (ii) glucose, (iii) fatty acids and glycerol
58) When students observed a stained epidermal peel of a
leaf under the microscope, it appeared pinkish red. The
stain used was [1]
a) Colchicine b) Acetocarmine
c) Safranin d) Iodine
59) Which of the following does not respire through the lungs?
[1]
a) Duck b) Whale
c) Tadpole d) Frog
60) If salivary amylase is lacking in the saliva, which of the
following events in the mouth cavity will be affected?
[1]
a) Fats breaking down into fatty acids and glycerol
b) Absorption of vitamins
c) Starch breaking down into sugars
d) Proteins breaking down into amino acids
61) Under the high power objective of a microscope, an
epidermal peel of a leaf shows [1]
a) Stomata surrounded by several epidermal cells
b) Stomata surrounding by a pair of guard cells each
c) Stomata surrounding many guard cells
d) Stomata surrounded by several guard cells each
62) When the cell is kept in a hypertonic solution, then water
moves [1]
a) Out of the cell b) No movement of water
c) Movement of water d) Into the cell
63) Choose the event that does not occur in photosynthesis.
[1]
a) Reduction of carbon dioxide to carbohydrates
b) Oxidation of carbon to carbon dioxide
c) Absorption of light energy by chlorophyll
d) Conversion of light energy to chemical energy
64) Most of the digestion and absorption of the food takes
place in the [1]
a) Small intestine b) Stomach
c) Large intestine d) Liver
65) Ridhima put lime water in the beaker. She finds lime
water turns milky. It means [1]
a) Presence of KOH in conical flask in the test tube
b) Absence of NaOH
c) Presence of lime with germinating seeds
d) Absence of KOH
66) A student covered a leaf from a de – starched plant with
a black paper strip and kept it in the garden outside his
house in fresh air. In the evening, he tested the covered
portion of the leaf for the presence of starch. By doing
so the student was trying to show that: [1]
a) Light is necessary for photosynthesis.
b) Carbon dioxide is necessary for photosynthesis.
c) Chlorophyll is necessary for photosynthesis.
d) Carbon dioxide is given out during respiration.
67) After completing the experiment three students A, B and
C found that the percentage of absorption of water is
10%, 20% and 25% respectively. Who had put raisins
more time in the water? [1]
a) C b) A
c) A and C d) B
68) To set – up the experiment to show that light is necessary
for photosynthesis, experimental leaves should be taken
for use from [1]
a) Any flowering plant
b) Destarched potted plant
c) Starched potted plant
d) Newly emerged sapling
69) In an airtight experimental set – up which was used by
you in the laboratory to study respiration in germinating
seeds, the seeds obtained the oxygen for respiration from
[1]
a) Water used for soaking the seeds
b) Air in the flask
c) Water in the germinating seeds
d) Water in the beaker
70) In the experiment to show that carbon dioxide is given
out during respiration, the student use: [1]
a) KOH solution b) Alcohol
c) Lime water d) Iodine solution
71) A black strip of paper was clipped onto a destarched leaf
in a potted plant to cover a part of the leaf. The plant
was then exposed to sunlight for four hours, the paper
strip was removed and the leaf was tested for starch.
When iodine solution was added: [1]
a) The entire leaf turned blue – black.
b) The covered part of the leaf became blue – black.
c) The uncovered part of the leaf became blue – black.
d) The colour of the iodine solution remain unchanged.
72) A well – stained leaf peel mount when observing under
the high power of a microscope shows nuclei in [1]
a) Only guard cells
b) Only epidermal cells
c) Guard cells, epidermal cells and stoma.
d) Guard cells and epidermal cells
73) Choose the correct path of urine in our body [1]
a) Kidney→ Urinary bladder → Urethra → Ureter
b) Urinary bladder→ Kidney → Ureter → Urethra
c) Kidney→ Ureters → Urinary bladder → Urethra
d) Kidney→ Ureter → Urethra → Urinary bladder
