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Question Paper Solutions - Biology 2015 - 2016 ICSE Class 10

SubjectBiology
Year2015 - 2016 (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 and any four questions from Section II.


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

The exchange of chromatid parts between the maternal and the paternal chromatids of a pair of homologous chromosomes during meiosis.

Chapter: [1] Basic Biology
Concept: Significance of Mitosis
[1]1.1.2

The number of individuals inhabiting per unit area.

Chapter: [3] Human Anatomy and Physiology
Concept: Problems Posed by the Increase in Population in India
[1]1.1.3

The immunity acquired by providing readymade antibodies from outside for treating certain infectious diseases.

Chapter: [4] Physical Health and Hygiene
Concept: Common Health Problems in India
[1]1.1.4

The pollutants that cannot be broken down to simple and harmless products.

Chapter: [5] Pollution
Concept: Sources of Pollution and Major Pollutant - Radiation
[1]1.1.5

The part of the brain that carries impulses from one hemisphere of the cerebellum to the other.

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Brain
[5]1.2 | Choose the correct answer from each of the four options given below:
[1]1.2.1

A plant cell may burst when:
A. Turgor pressure equalises wall pressure.
B. Turgor pressure exceeds wall pressure.
C. Wall pressure exceeds turgor pressure.
D. None of the above

Chapter: [2] Plant Physiology
Concept: Plant - Turgidity and Flaccidity
[1]1.2.2

The individual flattened stacks of membranous structures inside the chloroplasts are known as :
A. Grana
B. Stroma
C. Thylakoids
D. Cristae

Chapter: [2] Plant Physiology
Concept: Concept of Photosynthesis
[1]1.2.3

The nephrons discharge their urine at the :
A. Urinary bladder
B. Urethra
C. Renal pelvis
D. Renal pyramid

Chapter: [3] Human Anatomy and Physiology
Concept: Elementary Treatment of the Structure and Function of the Kidneys
[1]1.2.4

Gigantism and Acromegaly are due to :
A. Hyposecretion of Thyroxine
B. Hyposecretion of Growth hormone
C. Hypersecretion of Thyroxine
D. Hypersecretion of Growth hormone

Chapter: [3] Human Anatomy and Physiology
Concept: Endocrine System - Gland
[1]1.2.5

The mineral ion needed for the formation of blood clot is :
A. Potassium
B. Sodium
C. Calcium
D. Iron

Chapter: [3] Human Anatomy and Physiology
Concept: Structure and Functions of Blood
[5]1.3 | In each set of terms given below, there is an odd one and cannot be grouped in the same category to which the other three belong. Identify the odd erm in each set and name the category to which the remaining three belong. [5] Example : ovary, Fallopian tube, Ureter, Uterus. Odd term : Ureter Category : Parts of female reproductive system.
[1]1.3.1

find odd one from following: Sewage, newspaper, Styrofoam, Hay.

Chapter: [5] Pollution
Concept: Effects of Pollution on Climate, Environment, Human Health and Other Organisms
[1]1.3.2

find odd one from following: Thymine, Cytosine, Adenine, Pepsin.

Chapter: [3] Human Anatomy and Physiology
Concept: Functions of Organs and Accessory Glands
[1]1.3.3

find odd one from following: Malleus, iris, Stapes, Incus.

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[1]1.3.4

find odd one from following: Cortisone, Somatotropin, Adrenocorticotropic hormone, Vasopression.

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

find odd one from following: Typhoid, Haemophilia, Albinism, Colour blindness.

Chapter: [1] Basic Biology
Concept: Genetics: - Sex Linked Inheritance of Diseases
[5]1.4 | Complete the following paragraph by filling in the blanks (i) to (v) with appropriate words:

_____________ secreted by the (ii) _____________ lobe of the pituitary gland. If this hormone secretion is reduced, there is an increased production of urine. This disorder is called (iii) ____________. Sometimes excess glucose is passed with urine due to hyposecretion of another hormone called (iv) _____________ leading to the cause of a disease called (v) ______________.

Chapter: [3] Human Anatomy and Physiology
Concept: Elementary Treatment of the Structure and Function of the Kidneys
[5]1.5 | State the exact location of the following structures:
[1]1.5.1

State the exact location of the Centromere

Chapter: [1] Basic Biology
Concept: Chromosomes - Basic Structure, Number
[1]1.5.2

State the exact location of the Chordae tendinae

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Circulatory System
[1]1.5.3

State the exact location of the Thyroid gland

Chapter: [3] Human Anatomy and Physiology
Concept: Endocrine System - Gland
[1]1.5.4

State the exact location of the Ciliary body

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[1]1.5.5

State the exact location of the Proximal convoluted tubule.

Chapter: [2.03] Reproduction
Concept: Reproduction in Human Beings
[5]1.6

Given below is a diagram depicting a defect of the human eye, study the same and then answer the questions that follow:

(i) Name the defect shown in the diagram.
(ii) What are the two possible that cause this defect?
(iii) Name the type of lens used to correct this defect.
(iv) With the help of a diagram show how the defect shown above is rectified using a suitable lens.

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[5]1.7

Given in the box below are a set of 14 biological terms. Of these, 12 can be paired into 6 matching pairs. Out of the six pairs, one has been done for you as an example. 
Example : endosmosis - Turgid cell.
Identify the remaining five matching pairs :

Cushing’s syndrome, Turgid cell, Iris, Free of rod and cone cells, Colour of eyes, Hypoglycemia, Active transport, Acrosome, Addison’s disease, Blind spot, Hyperglycemia, Spermatozoa, Endosmosis, Clotting of blood.

 

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[5]1.8 | State the main function of the following :
[1]1.8.1

State the main function of the Lymphocytes of blood

Chapter: [3] Human Anatomy and Physiology
Concept: Structure and Functions of Blood
[1]1.8.2

State the main function of the Leydig cells

Chapter: [2.03] Reproduction
Concept: Reproduction in Human Beings
[1]1.8.3

State the main function of the Guard cells

Chapter: [2] Plant Physiology
Concept: Means of Transport - Active Transport
[1]1.8.4

State the main function of the Eustachian tube

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[1]1.8.5

Name the functions : Corpus luteum

Chapter: [11.01] Human Reproduction
Concept: Menstrual Cycle
[10]2
[5]2.1

The figure given below is a diagrammatic representation of a part of the cross section of the root in the root hair zone. Study the same and then answer the questions that follow

(i) Name the parts indicated by the guidelines 1 to 4.
(ii) Which is the process that enables the passage of water from the soil into the root hair?
(iii) Name the pressure that is responsible for the movement of water in the direction indicated by the arrows. Define it.
(iv) Due to an excess of this pressure sometimes drops of water are found along the leaf margins of some plants especially in the early mornings. What is the phenomenon called?
(v) Draw a well labelled diagram of the root hair cell as it would appear if an excess of fertiliser is added to the soil close to it.

Chapter: [2] Plant Physiology
Concept: Absorption by Roots
[5]2.2 | Differentiate between the following pairs on the basis of what is mentioned within brackets
[1]2.2.1

Differentiate between Human skin cell and Human ovum (number of chromosomes).

Chapter: [3] Human Anatomy and Physiology
Concept: Functions of Organs and Accessory Glands
[1]2.2.2

Differentiate between Sperm duct and fallopian rube (function)

Chapter: [2.03] Reproduction
Concept: Reproduction in Human Beings
[1]2.2.3

Differentiate between Red Cross and WHO (one activity)

Chapter: [4] Physical Health and Hygiene
Concept: Health Organisations
[1]2.2.4

Differentiate between Rod cells and cone cells (pigment)

Chapter: [3] Human Anatomy and Physiology
Concept: Functions of Organs and Accessory Glands
[1]2.2.5

Differentiate between LUBB and DUP (names of the valves whose closure produce the sound)

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Circulatory System
[10]3
[5]3.1

Given below is the outline of the human body showing the important glands :

(i) Name the glands marked 1 to 4.
(ii) Name the hormone secreted by part 2. Give one important function of this hormone.
(iii) Name the endocrine part of the numbered 3.
(iv) Why is the part labelled I called the master gland? Which part of the forebrain controls the gland labelled I?
(v) Name the gland that secretes the ‘emergency hormone’.

Chapter: [3] Human Anatomy and Physiology
Concept: Endocrine System - Gland
[5]3.2

The diagram of an given below demonstrates a particular process in plants. Study the same and answer the questions that follow :

(i) Name the apparatus.
(ii) Which phenomenon is demonstrated by this apparatus?
(iii) Explain the phenomenon mentioned in (ii) above.
(iv) State two limitations of using this apparatus.
(v) What is the importance of the air bubble in the experiment?
(vi) Name the structures in a plant through which the above process takes place.

Chapter: [2] Plant Physiology
Concept: Rise of Water up to the Xylem
[10]4
[5]4.1

(i) Draw a well labelled diagram of the membranous labyrinth found in the inner ear.
(ii) Based on the diagram drawn above in (i) give a suitable term for each of the following descriptions :
1. The sensory cells that helps in hearing.
2. The part that is responsible for static balance of the body.
3. The membrane covered opening that connects the middle ear to the inner ear.
4. The fluid present in the middle chamber of cochlea.
5. The structure that maintains dynamic equilibrium of the body.

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[5]4.2 | Give the Biological/technical term for the following:

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

Chapter: [11.01] Human Reproduction
Concept: Menstrual Cycle

the Biological/technical term Pigment providing colour to urine. 

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

the Biological/technical term for The vein which drains the blood from the intestine to the liver.

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

the Biological/technical term for The canal through which the testes descend into the scrotum just before the birth of a male baby

Chapter: [2.03] Reproduction
Concept: Reproduction in Human Beings

The Biological/technical term for The process causing an undesirable change in the environment

Chapter: [8] Striving for better Environment 1
Concept: Pollution - Types of Pollution

The Biological/technical term for The removal of nitrogenous wastes from the body

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

the Biological/technical term for The repeating components of each DNA strand lengthwise

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

the Biological/technical term for An alteration in the genetic material that can be inherited. 

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

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

the Biological/technical term for Blood vessels carrying blood to the left atrium.

Chapter: [3] Human Anatomy and Physiology
Concept: Concept of Circulatory System
[10]5
[5]5.1

The given diagram shows a stage during mitotic division in an animal cell

(i) Identify the stage. Give a reason to support your answer.
(ii) Draw a neat labelled diagram of the cell as it would appear in the next stage. Name the stage.
(iii) In what two ways is mitotic division in an animal cell different from the mitotic division in a plant cell?
(iv) Name the type of cell division that occurs during :
A. Growth of a shoot
B. Formation of pollen grains.

 

Chapter: [1] Basic Biology
Concept: Significance and Major Differences Between Mitotic and Meiotic Division
[5]5.2 | Give scientific reasons for the following statements :
[1]5.2.1

Give scientific reasons : Colour blindness is more common in men than in women.

Chapter: [1] Basic Biology
Concept: Genetics: - Sex Linked Inheritance of Diseases
[1]5.2.2

Give scientific reasons: Injury to medulla oblongata leads to death.

Chapter: [4] Physical Health and Hygiene
Concept: Common Health Problems in India
[1]5.2.3

Give scientific reasons: When an ovum gets fertilized, menstrual cycle stops temporarily in a woman.

Chapter: [2.03] Reproduction
Concept: Reproduction in Human Beings
[1]5.2.4

Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria 

Chapter: [2.03] Reproduction
Concept: Reproduction in Human Beings
[1]5.2.5

Give scientific reasons: Blood flows in arteries in spurts and is under pressure.

Chapter: [3] Human Anatomy and Physiology
Concept: Structure and Functions of Blood
[10]6
[5]6.1

The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow: 

(i) Label the parts numbered 1 to 3 in the diagram.
(ii) Mention any two functions of the part labelled 2 in the diagram.
(iii) Explain the significance of the part numbered 3 in the diagram.
(iv) Define the term ‘Gestation’. What is the normal gestational period of the developing human embryo?
(v) Mention the sex chromosomes in a male and female embryo.

Chapter: [2.03] Reproduction
Concept: Reproduction in Human Beings
[5]6.2

The following diagram demonstrates a physiological process taking place in green plants. The whole set up was placed in bright sunlight for several hours. Study the diagram and answer the questions that follow

(i) What aspect of the physiological process is being examined?
(ii) Explain the physiological process mentioned in (i) above.
(iii) Label the parts numbered 1 and 2 in the diagram.
(iv) Write a well-balanced chemical equation for the physiological process explained in (ii) above.
(v) What would happen to the rate of bubbling of the gas if a pinch of sodium bicarbonate is added to the water in the beaker? Explain your answer.

 

Chapter: [2] Plant Physiology
Concept: Concept of Photosynthesis
[10]7
[5]7.1

A homozygous tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf (t) plant bearing white (r) flowers :-
(i) Give the genotype and phenotype of the plants of F1 generation.
(ii) Mention the possible combinations of the gametes that can be obtained from the F1 hybrid plant.
(iii) State the Mendel’s law of Independent Assortment.
(iv) Mention the phenotypes of the off springs obtained in F2 generation.
(v) What is the phenotypic ratio obtained in F2 generation?

Chapter: [1] Basic Biology
Concept: Genetics: Mendel’s Laws of Inheritance
[5]7.2
[1]7.2.1

Briefly explain the following terms : Reflex action

Chapter: [3] Human Anatomy and Physiology
Concept: Reflex Action and Reflex Arc
[1]7.2.2

Briefly explain the following terms: Power of accommodation

Chapter: [3] Human Anatomy and Physiology
Concept: Sense Organs – Eye and Ear
[1]7.2.3

Briefly explain the following terms: Photophosphorylation

Chapter: [2] Plant Physiology
Concept: Concept of Photosynthesis
[1]7.2.4

Briefly explain the following terms: Hormone

Chapter: [3] Human Anatomy and Physiology
Concept: Endocrine System - Gland
[1]7.2.5

Briefly explain the following terms: Synapse

Chapter: [3] Human Anatomy and Physiology
Concept: Nervous System - Structure of Neuron
S