ICSE Class 9 Biology Sample Question Paper 4 with Answers

ICSE Class 9 Biology Sample Question Paper 4 with Answers

Section -I
(Attempt all questions from this section)

Question 1.
(a) Name the following :
(i) The two types of devices commonly used for removing the particulate air pollutants, (ill The category of immunity required in the treatment of snake bite.
(iii) Any agent that causes cancer.
(iv) Organism that transmits disease-causing microbes.
(v) The condition in which lactic acid accumulates in our muscles and gives the feeling of fatigue.
Answer:
(i) Scrubbers and electrostatic precipitators
(ii) Artificially acquired passive immunity
(iii) Carcinogen
(iv) Vectors
(v) Oxygen debt

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(b) Choose the correct answer from each of the four options given below :
(i) If for some reason the sebaceous glands fail to function, then :
(a) The body will not be able to regulate the body temperature.
(b) The skin will turn darker with more melanin,
(c) The hairs will fail to grow.
(d) The skin will turn dry and rough.
Answer:
(d) The skin will turn dry and rough.

(ii) Which of the following consist of 3 bones ?
(a) Ear ossicles
(b) Neck vertebrae
(c) Tarsals
(d) Phalanges
Answer:
(a) Ear ossicles

(iii) Which one of the following do bacteria possess ?
(a) Mitochondria
(b) Ribosomes
(c) Golgi body
(d) Vacuole
Answer:
(b) Ribosomes

(iv) Which one of the following are called as amphibians of plant kingdom ?
(a) Thallophytes
(b) Gymnosperms
(c) Bryophytes
(d) Pteridophytes
Answer:
(c) Bryophytes

ICSE Class 9 Biology Sample Question Paper 3 with Answers

(v) The number of ATP produced during aerobic respiration is :
(a) 2
(b) 36
(c) 38
(d) 40
Answer:
(c) 38

(c) Fill in the blanks :
(i) Parenchyma cells containing chloroplasts are termed as ………………..
(ii) Flower containing only carpels are called ………………..
(iii) The protective coverings of ovule is called ………………..
(iv) The scientific name of house cat is …………………..
(v) ……………….formation in bacteria is a method of escaping unfavourable environmental conditions.
Answer:
(i) Chlorenchyma
(ii) Pistillate flower
(iii) Integument
(iv) Felis domesticus
(v) Spore

(d) Choose the odd one and categorize the rest under one group.
(i) Euglena, Paramecium, Amoeba, Toadstool.
(ii) Liverfluke, Tapeworm, Ascaris, Planaria.
(iii) Parotid, Gastric, Submandibular, Sublingual.
(iv) Sternum, Lumbar, Sacrum, Cranium, Humerus.
(v) Larynx, Bronchioles, Alveolar sac, Ileum.
Answer:

(i) Odd : Toadstool
Category : Kingdom Protista

(ii) Odd : Ascaris
Category: Phylum Platyhelminthes

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(iii) Odd: Gastric Category : Salivary glands

(iv) Odd: Humerus
Category : Bones of axial skeleton

(v) Odd: Ileum
Category : Parts of respiratory tract

(e) Statement given below are incorrect. Correct the following statements by changing the first word only.
(i) Arthropodes move by means of tube feet.
(ii) Mycelium is the swollen tip of Rhizopus where spores get matured.
(iii) Vitamin B3 deficiency causes pernicious anaemia.
(iv) HCl activates inactive trypsinogen to active trypsin.
(v) Iodine solution is used to test the presence of glucose.
Answer:
(i) Echinoderms move by means of tube feet.
(ii) Sporangium is the swollen tip of Rhizopus where spores get modured.
(iii) Vitamin B12 deficiency causes pernicious anaemia.
(iv) Enterokinase activates inactive trypsinogen to active trypsin.
(v) Fehling’s solution is used to test the presence of glucose.

(f) State one point of difference between the following pairs according to the guidelines given in brackets.
(i) Kingdom Monera and Kingdom Protista (nuclear material)
(ii) Iron and Iodine (disease caused due to their deficiency)
(iii) Sucrase and Lactase (function)
(iv) Meibomian glands and Ceruminous glands (location)
(v) Oxygen and Carbon dioxide (mode of transport in our body)
Answer:
(i)

Kingdom MoneraKingdom Protists
The organisms that belongs to kingdom Monera have nuclear material that lies free in cytoplasm without being enclosed in nuclear envelope. They do not have an organized nucleus.Protists have a well-defined nucleus with nuclear material enclosed within nuclear envelope.

(ii)

IronIodine
Iron deficiency causes anaemia.Iodine deficiency causes simple goitre and cretinism in children.

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(iii)

SucraseLactase
Sucrase converts sucrose into glucose and fructose.Lactase converts lactose into glucose and galactose.

(iv)

Meibomian glandsCeruminous glands
Meibomian glands are modified sebaceous glands which open on the margins of the eyelids.Ceruminous glands are also modified sebaceous glands found in auditory canal.

(v)

OxygenCarbon dioxide
Oxygen is transported in the form of oxy-haemoglobin carried by RBCs throughout the body.Carbon dioxide is transported in the form of bicarbonates dissolved in plasma or in combination with haemoglobin as carbamino haemoglobin by RBCs.

(g) Complete the following table by filling in the numbered blanks with an appropriate answer :
ICSE Class 9 Biology Sample Question Paper 4 with Answers 1
Answer:
(i) Smaller peptides + Amino acids
(ii) Lipase
(iii) Fatty acids + glycerol
(iv) Maltose
(v) Peptidase
(vi) Amino acds
(vii) Proteins
(viii) Peptides
(ix) Rennin
(x) Paracasein

ICSE Class 9 Biology Sample Question Paper 3 with Answers

(h) Given below is an overall chemical reaction of a certain process.
C6H12O6 → Lactic acid + 2ATP + Energy
(i) Identify the process.
(ii) Is this reaction applicable to animals or plants or both ?
(iii) Name one tissue where this reaction occurs.
(iv) Give the reaction for complete oxidation of glucose. What is this process called ?
(v) Give the site in our body where complete oxidation of glucose occurs.
Answer:
(i) It is anaerobic respiration.
(ii) It occurs in animals.
(iii) This reaction mainly occurs in skeletal muscles.
(iv) C6H12O6 + 6O2 → 6CO2 + 6H2O + 38 ATP + Energy/Heat
It is called aerobic respiration.
(v) It occurs mainly in mitochondria.

Section – II
(Attempt any four question from this section)

Question 2.
(a) Study the figure and answer the following:
ICSE Class 9 Biology Sample Question Paper 4 with Answers 2
(i) Identify the figure.
(ii) To which kingdom does it belong ?
(iii) Label the parts 1-5.
(iv) What is the function of part labelled 3 and 5 ?
(v) How does it reproduce ?
Answer:
(i) It is a bread mould or rhizopus.
(ii) It belongs to kingdom fungi.
(iii) 1-Sporangium, 2-Sporangiophores, 3-Spores, 4-Stolon, 5-Hyphae.
(iv) Sporangium bursts to release the spores which gets scattered by wind and under suitable conditions like temperature, substratum, moisture the spores germinate to give rise to new mycelium. Hyphae penetrate into the substratum (like bread) and secrete some enzymes which digest the food in the bread and then it is absorbed by rhizopus.
(v) It reproduces by asexual reproduction.

ICSE Class 9 Biology Sample Question Paper 3 with Answers

(b) Give the exact location of the following :
(i) Capsule
(ii) Sclerenchyma
(iii) Columnar epithelium
(iv) Aleurone layer
(v) Sublingual glands
Answer:
(i) Capsule is a slimy protective layer present outside to the cell wall in bacteria.
(ii) Sclerenchyma is found in stems and veins of leaves.
(iii) Columnar epithelium is found in inner lining of stomach and intestines.
(iv) Aleurone layer is the outermost layer of endosperm rich in protein and is found in maize grain.
(v) Sublingual glands are salivary glands found below the tongue.

Question 3.
(a) Write few characteristics of following tissues with suitable diagrams :
(i) Sclerenchyma
(ii) Parenchyma
(iii) Collenchyma
Answer:
(i) Some characteristics of sclerenchyma are :
ICSE Class 9 Biology Sample Question Paper 4 with Answers 8
1. They are dead, long, narrow cells.
2. Their cell walls are thick due to deposition of lignin.
3. They provide strength to plant parts.
4. They are closely packed without intercellular spaces.

(ii) Some characteristics of parenchyma are :
ICSE Class 9 Biology Sample Question Paper 4 with Answers 9
1. They are large oval, circular or polygonal shaped cells with thin walls.
2. They have single large vacuole.
3. They are found in cortex and pith regions of plant.
4. They have abundant intercellular spaces. Space
5. They provide temporary support to plants and some store food as in potatoes.

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(iii) Some characteristics of collenchyma are :
ICSE Class 9 Biology Sample Question Paper 4 with Answers 10
1. They are elongated cells with cell walls thickened at the comer.
2. They are found in leaf stalks and below epidermis of stems.

(b) Study the diagram and answer the following questions :
ICSE Class 9 Biology Sample Question Paper 4 with Answers 3
(i) Identify the structure and state its main role.
(ii) Label the parts 1-5.
(iii) What is function of parts labelled 1 and 5 ?
(iv) Is this structure present in all cells ? If not, name the cell in which it is absent.
Answer:
(i) It is nucleus. Its main role is to regulate and coordinate various life processes of cell and play an important role in cell division. It is the controlling centre of the cell, so it is also known as brain of the cell.
(ii) 1-Chromatin fibres, 2-Nuclear membrane, 3-Nucleoplasm, 4-Nuclear pore, 5-Nucleolus.
(iii) Chromatin fibres are thread-like structures which are bearer of genes that control hereditary characters.
Nucleolus produces ribosomes and participates in protein synthesis by storing and forming RNA.
(iv) No, it is absent in matured human RBCs.

Question 4.
(a) Answer the following questions briefly :
(i) What are antagonistic muscles ? Give one example.
(ii) Why Negroes have dark coloured skin while Europeans have light coloured skin ?
(iii) Give some symptoms of Hepatitis and Cholera.
(iv) Give some uses of antibiotics.
(v) Give main activities of Red Cross.
Answer:
(i) A muscle that opposes the action of another muscle is called antagonistic muscle. They generally occur in pairs. Example- biceps and triceps. Biceps bend the lower arm over the upper arm while straightening of lower arm is brought about by triceps.

(ii) Pigment melanin present in malpighian layer of our skin is responsible for the colouration of our skin. Different quantities of this pigment present in our skin lead to formation of very light brown to dark colouration of the skin. Negroes have generally more amount of melanin as compared to Europeans, so Negroes have dark coloured skin while Europeans have light coloured skin.

(iii) Symptoms of Hepatitis are body ache, deep yellow urine, yellowish eye, light coloured stools, nausea, vomiting, enlarged liver, loss of appetite, fever etc. Symptoms of cholera are severe diarrhoea, vomiting, no urination due to shortage of water in body.

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(iv) Some uses of antibiotics are :
1. They are used as medicines to fight infections.
2. Some are used as food preservatives.
3. Some are used for controlling plant pathogens.
4. Some are used in treating animal feed to prevent internal infections.

(v) Main activities of Red Cross are :
1. To extend relief and help to the victims of calamity like floods, fire, famine, earthquake.
2. To procure and supply blood for needy victims of war or other calamities.
3. To provide possible first aid in any accident and arrange ambulance services during emergencies.

(b) Study the figure given below and answer the following questions :
.ICSE Class 9 Biology Sample Question Paper 4 with Answers 4
(i) Identify the figure.
(ii) Label the parts 1-7.
(iii) How is thigh bone and pelvis connected together ? Name the type of joint present between thigh bone and pelvis.
(iv) Name three bones present in our hip bone.
(v) Give the function of pelvic girdle.
Answer:
(i) The figure shows the hind limb.
(ii) 1-Femur, 2-Patella, 3-Tibia, 4-Fibula, 5-Tarsals, 6-Meta tarsals, 7-Phalanges.
(iii) The thigh bone i.e., head of femur fits into the large cup-shaped articular cavity called acetabulum of hip bone.
Ball and socket joint is present between thigh bone and pelvis.
(iv) Ilium, ischium and pubis are three bones present in our hip bone.
(v) It gives support to the skeleton of hind limbs and also protects and supports our abdominal organs.

Question 5.
(a) Give reasons :
(i) Meristematic cells have a prominent nucleus and dense cytoplasm but they lack vacuole.
(ii) Mitochondria is called the powerhouse of the cell.
(iii) Humans have heterodont and diphyodont dentition.
(iv) Person feels breathlessness at higher altitudes.
(v) Small intestine is the most important organ of our digestive system.
Answer:
(i) Meristematic cells are actively dividing cells so they have a prominent nucleus with dense cytoplasm. As they are in continuous dividing state hence they don’t need to store food or waste material, so they lack vacuoles.

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(ii) Mitochondria is the site where glucose is oxidized to release energy in the form of ATP. The energy is stored in the form of ATP and is used in various metabolic activities, thus it is known as powerhouse of the cell.

(iii) In human beings the teeth are of different shapes, so this type of dentition is called heterodont and teeth appear in two sets during their lifetime i.e., milk teeth and permanent teeth’. So, this type of condition is called diphyodont dentition.

(iv) At higher altitudes air pressure decreases as well as oxygen content decreases, so we feel difficulty in breathing and lack of oxygen causes dizziness, loss of hearing, unsteady vision etc.

(v) Small intestine is the region where maximum digestion of food occurs by enzymes of pancreatic juice secreted by pancreas and intestinal juice secreted by intestinal glands. Maximum absorption of digested food also occurs here. So, it is the most important organ of our digestive system.

(b) Study the figure below and answer the following question :
ICSE Class 9 Biology Sample Question Paper 4 with Answers 5
(i) Identify the figure.
(ii) To which phylum this organism belongs ?
(iii) Name the disease caused by this organism in human beings. How does this disease mainly spread ?
(iv) Give few characteristics of the organisms belonging to phylum mentioned by you in Q. (ii) above.
(v) Give few examples of the organisms belonging to phylum mentioned by you in Q. (ii) above.
Answer:
(i) It is Taenia solium, a tape worm.
(ii) Platyhelminthes.
(iii) Taeniasis : It is spread by eating infected pork and beef.
(iv) Few characteristics are :

  • They are small, soft, flattened, unsegmented worms without a body cavity.
  • Alimentary canal has one opening i.e, mouth.
  • They are mainly parasites, few are free living.

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(v) Liverfluke, Planaria.

Question 6.
(a) The following diagram refers to an apparatus which is used to demonstrate a physiological process.
ICSE Class 9 Biology Sample Question Paper 4 with Answers 6
(i) What is the purpose of keeping KOH solution in the test tubes X and Y ?
(ii) Why has coloured water risen in tubing 1 ?
(iii) What is the purpose of keeping boiled peas soaked in disinfectant in test tube Y ?
(iv) Name the biological process which causes the above rise.
(v) Define the biological process shown in the experiment.
Answer:
(i) KOH solution absorbs carbon dioxide if it is produced by seeds.

(ii) In tube 1, seeds undergo respiration i.e., it takes in oxygen and releases carbon dioxide. Carbon dioxide is absorbed by KOH solution and as oxygen present in tube is slowly used up, so a vacuum is created in tube X and coloured water from beaker rises in tubing 1.

(iii) They acts as a control because as seeds are boiled so they are dead and they cannot respire. The seeds are soaked in disinfectant so that there would be no growth of microbes which may interfere with the results of the experiment.

(iv) Respiration

(v) Respiration is a catabolic process by which glucose is oxidized to release energy in presence of oxygen and this energy produced is used to carry out various life processes.

(b) Give the exact function of the following :
(i) Seed coat
(ii) Nucellus
(iii) Sepals
(iv) Epithelial tissue
(v) Epiglottis
Answer:
(i) Seed coat is a protective layer consisting of outer testa and inner tegmen. It protects the delicate inner parts of the seed from injury and from the attack of bacteria, fungi and insects.

(ii) Nucellus is a mass of food laden cells that surrounds embryo sac and it protects the embryo as well as provides reserve food material to the developing embryo.

(iii) Sepals protect the young flower bud and when it is in green colour, it performs photosynthesis process.

(iv) Epithelial tissue when present in skin serves as protective layer, in intestine it helps in absorption and secretion and sensory perception.

(v) Epiglottis is a muscular flap-like structure which closes the opening of trachea so that food cannot enter respiratory tract and it will pass through the oesophagus.

ICSE Class 9 Biology Sample Question Paper 3 with Answers

Question 7.
(a) Study the figure given below and answer the following questions :
ICSE Class 9 Biology Sample Question Paper 4 with Answers 7
(i) What does figure A and figure B represent ?
(ii) Label the parts as indicated in figure above.
(iii) Explain the mechanism demonstrated in figure A and figure B.
(iv) What is the breathing rate in normal adults ?
Answer:
(a) (i) Figure A represents inhalation and figure B represents exhalation process of breathing.

(ii) 1-Air is drawn in, 2-Ribs moving upward and outward, 3-Diaphragm contracts, 4r-Diaphragm relaxes, 5-Air is forced out, 6-Ribs move inwards and downwards.

(iii) During inhalation process, ribs move upwards and outwards due to contraction of external intercostal muscles, thus chest cavity enlarges. Diaphragm contracts and flattens thus chest cavity increases lengthwise. The pressure inside lungs decreases so outside air rushes inside.

(iv) Breathing rate is 12-18 breaths per minute.

ICSE Class 9 Biology Sample Question Paper 3 with Answers

(b) Give scientific terms for the following :
(i) The process of putting the organic waste matter to decay to form manure by help of earthworms.
(ii) Mild chemical substances applied on body to kill germs.
(iii) The tidal air contained in air sacs.
(iv) The outer membranous covering of lungs.
(v) The narrowing of blood vessels to reduce blood supply when temperature is low outside.
(vi) The non-functional organs in our body.
(vii) The process by which excess amino acids are broken down in the liver.
(viii) The arrangement or condition of teeth in a particular individual or species.
(ix) Fibrous undigested cellulose in our body.
(x) The casting off and regrowing of exoskeleton in arthropods.
Answer:
(i) Vermicomposting
(ii) Antiseptics
(iii) Alveolar air
(iv) Parietal pleural membrane
(v) Vasoconstriction
(vi) Vestigeal organs
(vii) Deamination
(viii) Dentition
(ix) Roughage
(x) Moulting

ICSE Class 9 Biology Question Papers with Answers

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