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Question Paper Solutions - Biology 2014 - 2015 ICSE Class 10

SubjectBiology
Year2014 - 2015 (March)

1. Answers to this paper must be written on the paper provided separately.
2. You will not be allowed to write during the first 15 minutes.
This time is to be spent in reading the question paper.
3. The time given at the head of the paper is the time allowed for writing the answers.
4. Attempt all questions from Section I(Q.1) and any four questions from Section II(Q.2 - Q.7).


Marks: 80
[40]1
[5]1.1 | Name the following:
[1]1.1.1

The Biological/technical term for The process of uptake of mineral ions against the concentration gradient using energy from the cell

Chapter: [2] Plant Physiology
Concept: Means of Transport - Active Transport
[1]1.1.2

The form in which glucose in stored in liver. 

Chapter: [3] Human Anatomy and Physiology
Concept: Elementary Treatment of the Structure and Function of the Kidneys
[1]1.1.3

The vein that carries oxygenated blood.

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Circulatory System
[1]1.1.4

The cross between two parents having one pair of contrasting characters

Chapter: [1] Basic Biology
Concept: Genetics: Mendel’s Laws of Inheritance
[1]1.1.5

The structure formed by the villi of the embryo and the uterus of the mother.

Chapter: [5] The Life Cycle
Concept: Reproduction in Human Beings
[5]1.2 | The statements given below are false. Rewrite the correct form of the statement by changing the word which is underlined:
[1]1.2.1

Rewrite the correct form of the statement : Alpha cells of pancreas secrete Insulin.

Chapter: [3] Human Anatomy and Physiology
Concept: Endocrine System - Gland
[1]1.2.2

Rewrite the correct form of the statement: Formalin is an example of an Antiseptic

Chapter: [4] Physical Health and Hygiene
Concept: First Aid - Basic Principles of First Aid
[1]1.2.3

Rewrite the correct form of the statement: CNG is mainly responsible for the formation of acid rain.

Chapter: [5] Pollution
Concept: Acid Rain - Composition, Cause and Its Impact
[1]1.2.4

Rewrite the correct form of the statement: Sulphadiazine is an example of an Antiseptic.

Chapter: [4] Physical Health and Hygiene
Concept: First Aid - Basic Principles of First Aid
[1]1.2.5

Rewrite the correct form of the statement: Cretinism is caused due to deficiency of Adrenaline.

Chapter: [3] Human Anatomy and Physiology
Concept: Endocrine System - Gland
[5]1.3 | Choose the correct answer from the four options given below:
[1]1.3.1

A single highly coiled tube where sperms are stored, gets concentrated and mature us known as:
A. Epididymis
B. Vas efferentia
C. Vas deferens
D. Seminiferous tubule

Chapter: [5] The Life Cycle
Concept: Reproduction in Human Beings
[1]1.3.2

Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase

Chapter: [1] Basic Biology
Concept: Chromosomes - Basic Structure, Number
[1]1.3.3

BCG vaccine is effective against
A. Cholera
B. Mumps
C. Tuberculosis
D. Measles

Chapter: [4] Physical Health and Hygiene
Concept: Common Health Problems in India
[1]1.3.4

Which one of the following associated with the maintenance of the posture?
A. Cerebrum
B. Cerebellum
C. Thalamus
D. Pons

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Brain
[1]1.3.5

An example of non-biodegradable waste is
A. Vegetable peels
B. Sewage
C. Livestock waste
D. DDT

Chapter: [5] Pollution
Concept: Sources of Pollution and Major Pollutant - Water
[5]1.4 | Mention the exact location of the following structures:
[1]1.4.1

the exact location of the Thylakoids

Chapter: [2] Plant Physiology
Concept: Concept of Photosynthesis
[1]1.4.2

the exact location of the Organ of Corti

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[1]1.4.3

the exact location of the Lenticels

Chapter: [2] Plant Physiology
Concept: Rise of Water up to the Xylem
[1]1.4.4

the exact location of the Bicuspid value

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Circulatory System
[1]1.4.5

the exact location of the Loop of Henle

Chapter: [3] Human Anatomy and Physiology
Concept: Elementary Treatment of the Structure and Function of the Kidneys
[5]1.5

The diagram given below represents a certain stage of mitosis: 

(i) Identify the stage of cell division.
(ii) Name the parts labelled A and B
(iii) What is the unique feature observed in this stage?
(iv) How many daughter cells are formed from this type of cell division?

Chapter: [2.02] Cell Division
Concept: Cell Division and Cell Cycle
[5]1.6 | Given below is an example of a certain structure and its special functional activity. On a similar pattern fill in the blanks with suitable functions: Example: Chloroplast and photosynthesis
[1]1.6.1

fill in the blanks with suitable functions: Xylem and  __________.

Chapter: [2] Plant Physiology
Concept: Plant - Absorption of Water and Minerals
[1]1.6.2

fill in the blanks with suitable functions: Ciliary body and __________.

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[1]1.6.3

fill in the blanks with suitable functions: Seminiferous Tubule and _____

Chapter: [5] The Life Cycle
Concept: Reproduction in Human Beings
[1]1.6.4

fill in the blanks with suitable functions: Thyroid gland and _________

Chapter: [3] Human Anatomy and Physiology
Concept: Endocrine System - Gland
[1]1.6.5

fill in the blanks with suitable functions: Eustachian Tube and ______

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Circulatory System
[5]1.7 | Rewrite and complete the following sentences by inserting the correct word in the space indicated:
[1]1.7.1

The phenomenon of loss of water through a cut stem or injured part of plant is called ___________.

Chapter: [2] Plant Physiology
Concept: Rise of Water up to the Xylem
[1]1.7.2

___________ is the scientific name of garden pea, which Mendel used for his experiments.

Chapter: [1] Basic Biology
Concept: Genetics: Mendel’s Laws of Inheritance
[1]1.7.3

A fluid that occupies the larger cavity of the eye ball behind the lens is
___________.

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[1]1.7.4

Oxygen combines with haemoglobin present in RBC and forms _____.

Chapter: [3] Human Anatomy and Physiology
Concept: Structure and Functions of Blood
[1]1.7.5

___________ causes corrosion of the marble or brick surface.

Chapter: [5] Pollution
Concept: Acid Rain - Composition, Cause and Its Impact
[5]1.8 | Match the items in Column ‘A’ with those which are most appropriate in Column ‘B’.Rewrite the matching pairs as shown in the example: Example: Fibrinogen – Clotting of blood.

Match the Column:

no Column A Column B
1 Allele Control of automobile exhaust
2 Leydig cells Tourniquet
3 Utriculus Alternate forms of genes
4 Snake bite Dynamic equilibrium
5 Euro IV norms Testosterone
    Sudden change in genes
    Static equilibrium
Chapter: [5] The Life Cycle
Concept: Reproduction in Human Beings
[10]2
[5]2.1

The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both testtubes are kept in sunlight. Answer the questions that follow:

(i) Name the physiological process that releases the bubbles of oxygen.
(ii) Explain the physiological process as mentioned above in Q2 (a)(i).
(iii) What is the purpose of keeping a snail in test-tube ‘B’?
(iv) Why does test-tube ‘B’ have more bubbles of oxygen?
(v) Given an example of a water plant that can be used in the above process.
(vi) Write the overall chemical equation for the above process.

Chapter: [2] Plant Physiology
Concept: Concept of Photosynthesis
[5]2.2 | Give the biological/technical terms for the following :

the biological/technical terms for A mixture of smoke and fog.

Chapter: [5] Pollution
Concept: Sources of Pollution and Major Pollutan - Air

the biological/technical terms for Capacity of our body to resist disease.

Chapter: [4] Physical Health and Hygiene
Concept: Concept of Aids to Health

the biological/technical terms for Fixing of developing zygote on the uterine wall.

Chapter: [1.03] Human Reproduction
Concept: Menstrual Cycle

the Biological/technical term for Complete stoppage of menstrual cycle in females

Chapter: [1.03] Human Reproduction
Concept: Menstrual Cycle

the biological/technical terms for the hormone increasing reabsorption of water by kidney tubules

Chapter: [3] Human Anatomy and Physiology
Concept: Elementary Treatment of the Structure and Function of the Kidneys

the biological/technical terms for a thin membrane covering the entire front part of the eye.

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear

the biological/technical terms for the lens of eye losing flexibility resulting in a kind of long-sightedness in middle aged people.

Chapter: [3] Human Anatomy and Physiology
Concept: Eye Defects and Corrective Measures

the biological/technical terms for the number of persons living per square kilometre at any given time.

Chapter: [3] Human Anatomy and Physiology
Concept: Problems Posed by the Increase in Population in India

the biological/technical terms for The process by which white blood cells engulf bacteria

Chapter: [4] Physical Health and Hygiene
Concept: Common Health Problems in India
[10]3
[5]3.1

An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:

(i) Name the process being studied.
(ii) Explain the process named above in Q.3(a)(i).
(iii) Why was the pot covered with a plastic sheet?
(iv) Suggest a suitable control for this experiment.
(v) Mention two ways in which this process is beneficial to plants.
(vi) List three adaptations in plants to reduce the above mentioned process.

Chapter: [2] Plant Physiology
Concept: Rise of Water up to the Xylem
[5]3.2 | Briefly answer the following questions:
[1]3.2.1

State two reasons for the increase of population in India.

Chapter: [3] Human Anatomy and Physiology
Concept: Problems Posed by the Increase in Population in India
[1]3.2.2

What is the significance of amniotic fluid?

Chapter: [3] Human Anatomy and Physiology
Concept: Nutrition and Respiration of the Embryo
[1]3.2.3

What is the function of ear ossicles?

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[1]3.2.4

Mention any two activities of the WHO

Chapter: [4] Physical Health and Hygiene
Concept: Health Organisations
[1]3.2.5

State Mendel’s law of Dominance.

Chapter: [1] Basic Biology
Concept: Genetics: Mendel’s Laws of Inheritance
[10]4
[5]4.1

The diagrams given below are cross sections of blood vessels:

(i) Identify the blood vessels A, B and C.
(ii) Name the parts labelled 1 to 3.
(iii) Name the type of blood that flows through A.
(iv) Mention one structural difference between A and B.
(v) In which of the above vessels does exchange of gases actually take place?

Chapter: [3] Human Anatomy and Physiology
Concept: Structure and Functions of Blood
[5]4.2 | Differentiate between the following pairs on the basis of what is mentioned within brackets:
[1]4.2.1

Differentiate between Diffusion and Osmosis (Definition)

Chapter: [2] Plant Physiology
Concept: Diffusion and Osmosis
[1]4.2.2

Differentiate between the RBC and WBC (Shape)

Chapter: [3] Human Anatomy and Physiology
Concept: Structure and Functions of Blood
[1]4.2.3

Differentiate between the Tubectomy and Vasectomy (Part cut and tied)

Chapter: [3] Human Anatomy and Physiology
Concept: Functions of Organs and Accessory Glands
[1]4.2.4

Differentiate between the Vasopressin and Insulin (Deficiency disorder)

Chapter: [4] Physical Health and Hygiene
Concept: Common Health Problems in India
[1]4.2.5

Differentiate between the Rods and Cones of Retina (Type of pigment) 

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[10]5
[5]5.1

The diagram given below shows a section of human kidney. Study the diagram carefully and answer the questions that follow :

(i) Label the parts numbered 1 to 4.
(ii) Why does part ‘2’ have a striped appearance?
(iii) What is the fluid that passes down part ‘4’? Name the main nitrogenous waste present in it.
(iv) Mention the structural and functional units of kidneys.
(v) Name the two major steps in the formation of the fluid mentioned in Q.5 (a) (iii).

Chapter: [3] Human Anatomy and Physiology
Concept: Elementary Treatment of the Structure and Function of the Kidneys
[5]5.2 | Draw neat and labelled diagrams of the following:

Draw neat and labelled diagrams of Malpighian capsule

Chapter: [5] The Life Cycle
Concept: Reproduction in Human Beings

Draw neat and labelled diagrams of A myelinated neuron

Chapter: [3] Human Anatomy and Physiology
Concept: Nervous System - Structure of Neuron
[10]6
[5]6.1

The diagram given below shows the male urinogenital system of a human being. Study the diagram and answer the questions that follow:

(i) Label the parts numbered 1 to 8.
(ii) Name the corresponding structure of part (4) in female  reproductive system.
(iii) What is the role of part 7?

Chapter: [3] Human Anatomy and Physiology
Concept: Elementary Treatment of the Structure and Function of the Kidneys
[5]6.2
[1]6.2.1

In a homozygous plant round seeds (R) are dominant over wrinkled seeds (r) : Draw a Punnett square to show the gametes and offspring when both the plants have heterozygous round seeds (Rr).

Chapter: [1] Basic Biology
Concept: Genetics: Mendel’s Laws of Inheritance
[1]6.2.2

Mention the Phenotype and Genotype ratios of the offspring in F2 generation.

Chapter: [1] Basic Biology
Concept: Genetics: Mendel’s Laws of Inheritance
[1]6.2.3

Name the sex chromosomes in human males and females

Chapter: [1] Basic Biology
Concept: Chromosomes - Basic Structure, Number
[1]6.2.4

Briefly explain the term ‘Mutation’.

Chapter: [1] Basic Biology
Concept: Genetics: - Sex Linked Inheritance of Diseases
[1]6.2.5

What is the number of chromosomes in the gametes of human beings?

Chapter: [1] Basic Biology
Concept: Chromosomes - Basic Structure, Number
[10]7
[5]7.1

The diagram below represents the human heart in one phase of its function. Study the diagram carefully and answer the questions that follow:

(i) Name the phase.
(ii) Which part of the heart is contracting in this phase? Give a reason to support your answer.
(iii) Name the parts labelled 1 to 4.
(iv) What type of blood flows through ‘2’?
(v) State the function of the part numbered ‘5’.
(vi) Name the membrane that covers the heart.

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Circulatory System
[5]7.2 | Explain the following terms:

Explain Greenhouse effect

Chapter: [5.04] Environmental Issues
Concept: Greenhouse Effect and Climate Change

Explain Turgor pressure

Chapter: [2] Plant Physiology
Concept: Plant - Turgidity and Flaccidity

Explain Selective reabsorption

Chapter: [3] Human Anatomy and Physiology
Concept: Elementary Treatment of the Structure and Function of the Kidneys

Explain Natality.

Chapter: [3] Human Anatomy and Physiology
Concept: Problems Posed by the Increase in Population in India

Explain Pulse

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Circulatory System
S