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Biology Set 1 2018-2019 ICSE Class 10 Question Paper Solution

Biology [Set 1]
Marks: 80Academic Year: 2018-2019
Date: March 2019

1. Attempt all questions from Section 1

2. Attempt any four questions from Section 2


SECTION 1 (40 Marks)
[40]1
[5]1.a
[1]1.a.i

 Name the following : 
(i) The layer of the eyeball that provides nourishment to the eye. 

Concept: Concept of Nervous System
Chapter: [0.033] The Nervous System
[1]1.a.ii

Name the following : 
One gaseous compound which depletes the ozone layer. 

Concept: Pollution - Types of Pollution
Chapter: [0.05] Pollution
[1]1.a.iii

 Name the following : 
The structure which connects the placenta and the foetus.

Concept: Role of Placenta
Chapter: [0.034] The Reproductive System
[1]1.a.iv

Give appropriate biological/technical terms for the following:

A pair of corresponding chromosomes of the same size and shape, one from each parent.

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[1]1.a.v

The compound formed when haemoglobin combines with carbon dioxide in blood. 

Concept: Composition of Blood
Chapter: [0.032] The Circulatory System
[5]1.b
[1]1.b.i

 Correct and rewrite the statements by changing the biological term that is underlined for the statement: 
The theory of Inheritance of Acquired Characters was proposed by Watson and Crick. 

Concept: Genetics: - Sex Linked Inheritance of Diseases
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[1]1.b.ii

 Correct and rewrite the statements by changing the biological term that is underlined for the statement: 
The protective sac which develops around the developing embryo is called the Pericardium. 

Concept: Role of Placenta
Chapter: [0.034] The Reproductive System
[1]1.b.iii

Correct and rewrite the statements by changing the biological term that is underlined for the statement: 
 Mainitaining balance of the body and coordinating muscular activities is carried out by the cerebrum. 

Concept: Concept of Brain
Chapter: [0.033] The Nervous System
[1]1.b.iv

 Correct and rewrite the statements by changing the biological term that is underlined for the statement: 
The kidney is composed of number of neurons. 

Concept: Elementary Treatment of the Structure and Function of the Kidneys
Chapter: [0.031] The Excretory System (Elimination of Body Wastes)
[1]1.b.v

 Correct and rewrite the statements by changing the biological term that is underlined for the statement: 
The part of the eye which can be donated from a clinically dead person is the Retina. 

Concept: Eye: Structure and Functions
Chapter: [0.033] The Nervous System
[5]1.c
[1]1.c.i

Give suitable biological reasons for the following statement : 
The birth rate in India is very high. 

Concept: Problems Posed by the Increase in Population in India
Chapter: [0.036000000000000004] Population – The Increasing Numbers and Rising Problems
[1]1.c.ii

 Give suitable biological reasons for the following statement : 
 Carbon monoxide is dangerous when inhaled. 

Concept: Circulation of Blood
Chapter: [0.032] The Circulatory System
[1]1.c.iii

 Give suitable biological reasons for the following statement: 
Root hairs become flaccid and droop when excess fertilizers are added to the moist soil around them. 

Concept: Plant - Turgidity and Flaccidity
Chapter: [0.024] Absorption by Roots : the Processes Involved
[1]1.c.iv

Give suitable biological reasons for the following statement : 
 Acid rain is harmful to the environment. 

Concept: Acid Rain - Composition, Cause and Its Impact
Chapter: [0.05] Pollution
[1]1.c.v

 Give suitable biological reasons for the following statement : 
 All life on Earth is supported by Photosynthesis. 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[5]1.d

 Match the items given in Column A with the most appropriate ones in Column B and REWRITE the correct matching pairs : 
Column A   
                 Column B 

(i) Cranial nerves            Testosterone
(ii) Leydig cells                Natural reflex 
(iii) Acetylcholine            12 pairs 
(iv) Spinal nerves             Prolactin
(v) Sneezing                     Neurotransmitter
                                         - 18 pairs

                                         - 31 pairs
                                         - Conditioned reflex                         

Concept: Concept of Circulatory System
Chapter: [0.032] The Circulatory System
[5]1.e
[1]1.e.i

 Choose the correct answer from the four options given below :  
(i) While recording the pulse rate, where exactly does a doctor press on our wrist ? 

Nerve

 Vein

Artery

Capillary

Concept: Concept of Blood Pressure Heartbeat, Pulse
Chapter: [0.032] The Circulatory System
[1]1.e.ii

Choose the correct answer from the four options given below : 
In a human male, a sperm will contain : 

 Both X and Y chromosomes 

Only Y chromosome

Only X chromosome 

 Either X or Y chromosome

Concept: Sex Determination in Humans
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[1]1.e.iii

 Choose the correct answer from the four options given below :
A muscular wall is absent in : 

 Capillary 

Venule

 Arteriole 

Vein

Concept: Blood Vessels
Chapter: [0.032] The Circulatory System
[1]1.e.iv

Choose the correct answer from the four options given below : 
 On which day of the menstrual cycle does ovulation take place ?

 5th day

 28th day 

14th day 

1st day 

Concept: Menstrual Cycle
Chapter: [0.034] The Reproductive System
[1]1.e.v

 Choose the correct answer from the four options given below : 
Which one of the following does not affect the rate of transpiration ? 

 Light 

 Humidity 

 Wind 

Age of the plant 

Concept: The Factors Affecting Rate of Transpiration
Chapter: [0.023] Transpiration
[5]1.f
[1]1.f.i

 Identify the ODD term in each set and name the CATEGORY to which the remaining three belong : 
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates 
Addison’s disease, Cushing’s Syndrome, Acromegaly, Leukemia 

Concept: Concept of Endocrine System
Chapter: [0.035] The Endocrine System
[1]1.f.ii

 Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
                 Odd term : calcium Category : others are different types of                            carbohydrates
 Insulin, Adrenaline, Pepsin, Thyroxine 

Concept: Concept of Endocrine System
Chapter: [0.035] The Endocrine System
[1]1.f.iii

 Identify the ODD term in each set and name the CATEGORY to which the remaining three belong : 
Axon, Dendron, Photon, Cyton

Concept: Nervous System - Structure of Neuron
Chapter: [0.033] The Nervous System
[1]1.f.iv

Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates 
Chicken pox, Colour blindness, Haemophilia, Albinism 

Concept: Genetics: - Sex Linked Inheritance of Diseases
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[1]1.f.v

 Identify the ODD term in each set and name the CATEGORY to which the remaining three belong : 
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates
Polythene bag, Crop residue, Animal waste, Decaying vegetable. 

Concept: Concept of Pollution
Chapter: [0.05] Pollution
[5]1.g
[1]1.g.i

Expand the following biological abbreviations :
(i) ABA 

Concept: The Factors Affecting Rate of Transpiration
Chapter: [0.023] Transpiration
[1]1.g.ii

Expand the following biological abbreviations : 
IAA

Concept: The Factors Affecting Rate of Transpiration
Chapter: [0.023] Transpiration
[1]1.g.iii

Expand the following biological abbreviations : 
 ATP 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]1.g.iv

 Expand the following biological abbreviations : 
 DNA 

Concept: Chromosomes - Basic Structure, Number
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
[1]1.g.v

Expand the following biological abbreviations : 
TSH

Concept: Endocrine System -thyroid Gland
Chapter: [0.035] The Endocrine System
[5]1.h
[1]1.h.i

Study the picture given below and answer the following questions : 
Water pollution  

Concept: Sources of Pollution and Major Pollutant - Water
Chapter: [0.05] Pollution
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[1]1.h.ii

 Study the picture given below and answer the following questions : 
 Name one pollutant that causes the above the pollution. 

Concept: Sources of Pollution and Major Pollutant - Water
Chapter: [0.05] Pollution
[1]1.h.iii

 Study the picture given below and answer the following questions : 
 Mention the impact of this pollution on human health.

Concept: Sources of Pollution and Major Pollutant - Water
Chapter: [0.05] Pollution
[1]1.h.iv

 Study the picture given below and answer the following questions : 
State one measure to control this pollution.

Concept: Sources of Pollution and Major Pollutant - Water
Chapter: [0.05] Pollution
[1]1.h.v

Study the picture given below and answer the following questions : 
 What is a ‘Pollutant’ ? Explain the term. 

Concept: Sources of Pollution and Major Pollutant - Water
Chapter: [0.05] Pollution
SECTION II (40 Marks)
[10]2
[5]2.a
[1]2.a.i

Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow : 

 Label the parts 1 and 2. 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]2.a.ii

Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow :

(ii) Name the tropic movement shown by part 1. 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]2.a.iii

 Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow :
Part 1 is affected by two stimuli. Name them. Which one of the two is stronger? 

 Part 1 is affected by two stimuli. Name them. Which one of the two is stronger? 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]2.a.iv

Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow : 

What is Thigmotropism? Give one example.  

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]2.a.v

Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow : 

What is meant by ‘Positive’ and ‘Negative’ tropic movements in plants? 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[5]2.b
[1]2.b.i

Mention the exact location of the following : 
 Testis   

Concept: Functions of Male Reproductive Organs
Chapter: [0.034] The Reproductive System
[1]2.b.ii

Mention the exact location of the following : 
 Incus 

Concept: Ear: Parts and Functions of the Ear
Chapter: [0.033] The Nervous System
[1]2.b.iii

 Mention the exact location of the following : 
Thylakoids 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]2.b.iv

 Mention the exact location of the following : 
Amniotic fluid 

Concept: Functions of Female Reproductive Organs
Chapter: [0.034] The Reproductive System
[1]2.b.v

Mention the exact location of the following : 
Corpus callosum 

Concept: Functions of Female Reproductive Organs
Chapter: [0.034] The Reproductive System
[10]3
[5]3.a
[1]3.a.i

The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow : 

 Name the factor studied in this experiment. 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]3.a.ii

The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow :

 What will you observe in the experimental leaf after the starch test? 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]3.a.iii

The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow :

 Explain the process of Photosynthesis.

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]3.a.iv

The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow :
 Give a balanced chemical equation to represent the process of photosynthesis. 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]3.a.v

 The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow : 

 Draw a neat, labelled diagram of an experimental steup to show that oxygen is released during photosynthesis

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[5]3.b
[1]3.b.i

 State the main functions of the following: 
Medulla Oblongata 

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]3.b.ii

 State the main functions of the following:
Cytokinins

Concept: Concept of Photosynthesis
Chapter: [0.022000000000000002] Photosynthesis: Provider of Food for All
[1]3.b.iii

State the main functions of the following: 
 Coronary Artery  

Concept: Eye: Structure and Functions
Chapter: [0.033] The Nervous System
[1]3.b.iv

State the main functions of the following:
Seminal Vesicles  

Concept: Eye: Structure and Functions
Chapter: [0.033] The Nervous System
[10]4
[5]4.a
[1]4.a.i

 The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow :

Identify the system 

Concept: Concept of Excretory System
Chapter: [0.031] The Excretory System (Elimination of Body Wastes)
[1]4.a.ii

 The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow :

 Label the parts marked 2 and 4. Mention the function of part 5. 

Concept: Concept of Excretory System
Chapter: [0.031] The Excretory System (Elimination of Body Wastes)
[1]4.a.iii

 The diagram given below represents an organ system in the human body. Study the  same and answer the questions that follow :
Name the structural and functional units of the part marked 1. 

Concept: Concept of Excretory System
Chapter: [0.031] The Excretory System (Elimination of Body Wastes)
[1]4.a.iv

The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow :

 What is the fluid that accumulates in part 3?
Which is the main nitrogenous waste present in it? 

Concept: Concept of Excretory System
Chapter: [0.031] The Excretory System (Elimination of Body Wastes)
[1]4.a.v

 The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow : 


Draw a neat, labelled diagram showing the longitudinal section of part 1. 

Concept: Endocrine System -pituitary Gland
Chapter: [0.035] The Endocrine System
[5]4.b
[1]4.b.i

 The diagram give below represents an endocrine gland in the human body. Study the  diagram and answer the following questions:

Identify the endocrine gland. Where is it located?

Concept: Endocrine System -pituitary Gland
Chapter: [0.035] The Endocrine System
[1]4.b.ii

 The diagram give below represents an endocrine gland in the human body. Study the  diagram and answer the following questions:

Why is the above gland referred to as the ‘Master gland’? 

Concept: Endocrine System -pituitary Gland
Chapter: [0.035] The Endocrine System
[1]4.b.iii

 The diagram give below represents an endocrine gland in the human body. Study the diagram and answer the following questions:

Name the hormone which in deficiency causes Diabetes Inspidus. How does this disorder differ from Diabetes Mellitus? 

Concept: Endocrine System -pituitary Gland
Chapter: [0.035] The Endocrine System
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[1]4.b.iv

The diagram give below represents an endocrine gland in the human body. Study the diagram and answer the following questions: 

 Explain the term ‘Hormone’. What is the role of Tropic hormones in the human body?

Concept: Concept of Endocrine System
Chapter: [0.035] The Endocrine System
[1]4.b.v

The diagram give below represents an endocrine gland in the human body. Study the diagram and answer the following questions:

Which lobe of the above gland secretes?
1. Oxytocin

2. ACTH

3. Growth hormone 

Concept: Endocrine System -pituitary Gland
Chapter: [0.035] The Endocrine System
[10]5
[5]5.a
[1]5.a.i

Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:

Name the process being studies. Define the process.

Concept: Transpiration - Process and Significance
Chapter: [0.023] Transpiration
[1]5.a.ii

Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:


Why was the pot enclosed in a rubber sheet? 

Concept: Transpiration - Process and Significance
Chapter: [0.023] Transpiration
[1]5.a.iii

 Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:

Name the process being studies. Define the process. 

Concept: The Factors Affecting Rate of Transpiration
Chapter: [0.023] Transpiration
[1]5.a.iv

 Given below is an apparatus which has setup to investigate a physiological process  in plants. The setup was placed in bright sunlight. Answer the questions that follow:

List two adaptations in plants to reduce the above process. 

Concept: Transpiration - Process and Significance
Chapter: [0.023] Transpiration
[1]5.a.v

Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:

 Draw a neat, labelled diagram of a stomatal apparatus.

Concept: Transpiration - Process and Significance
Chapter: [0.023] Transpiration
[5]5.b
[1]5.b.i

 Given below are two stages in the evolution of man. Study them and answer the questions that follow:

 Identify Australopithecus and Neanderthal man from the above pictures. 

Concept: Human Evolution
Chapter: [0.07] Human Evolution
[1]5.b.ii

Given below are two stages in the evolution of man. Study them and answer the questions that follow:

 Mention two characteristic features each for two stages.

Concept: Human Evolution
Chapter: [0.07] Human Evolution
[1]5.b.iii

Given below are two stages in the evolution of man.  Study them and answer the questions that follow:


 Who proposed the theory of ‘Natural Selection’? 

Concept: Human Evolution
Chapter: [0.07] Human Evolution
[1]5.b.iv

 Given below are two stages in the evolution of man. Study them and answer the questions that follow:

Name the organisum used as an example to explain ‘Industrial Melanism’.

Concept: Human Evolution
Chapter: [0.07] Human Evolution
[1]5.b.v

 Given below are two stages in the evolution of man. Study them and answer the questions that follow:

Give two examples of Vestigial organs in humans. 

Concept: Human Evolution
Chapter: [0.07] Human Evolution
[10]6
[5]6.a
[1]6.a.i

 In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t). 
What is the phenotype and genotype of the F1 generation if a homozygous tall plant is crossed with a homozygous dwarf plant? 

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[1]6.a.ii

 In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t). 
 Draw a Punnett square board to show the gametes and offspring when both the parents are heterozygous for tallness.

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[1]6.a.iii

 In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t). 
What is the phenotypic ratio and genotypic ratio of the above cross in (ii)? 

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[1]6.a.iv

 In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t). 
State Mendel’s Law of Dominance. 

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[1]6.a.v

In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t).
What is a Dihybrid Cross? 

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [0.011000000000000001] Genetics – Some Basic Fundamentals
[5]6.b
[1]6.b.i

Given below is a diagram representing a stage during the mitotic cell division. Study thediagram  and answer the following questions:

 Identify the stage by giving a suitable reason.

Concept: Significance of Mitosis
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
[1]6.b.ii

 Given below is a diagram representing a stage during the mitotic cell division. Study  thediagram  and answer the following questions:

 Is it a plant or an animal cell? Give a reason to support your answer. 

Concept: Significance of Mitosis
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
[1]6.b.iii

 Given below is a diagram representing a stage during the mitotic cell division. Study  thediagram  and answer the following questions:

Draw a neat, labelled diagram of the stage which follows the one shown in the diagram.

Concept: Significance of Mitosis
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
[1]6.b.iv

How many chromosomes will each daughter cell have after the completion of the above division? 

How many chromosomes will each daughter cell have after the completion of the above division? 

Concept: Significance of Mitosis
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
[10]7
[5]7.a
[1]7.a.i

 Answer the following questions briefly: 
 How are the cytons and axons placed in the brain and the spinal cord?

Concept: Nervous System - Structure of Neuron
Chapter: [0.033] The Nervous System
[1]7.a.ii

 Answer the following questions briefly: 
 Which part of the human ear gives ‘ Dynamic balance’ and ‘Static balance’ to the body? 

Concept: Concept of Nervous System
Chapter: [0.033] The Nervous System
[1]7.a.iii

Answer the following questions briefly: 
Explain how the human eye adapts itself to bright light and dim light. 

Concept: Concept of Nervous System
Chapter: [0.033] The Nervous System
[1]7.a.iv

Answer the following questions briefly: 
 What is Parthenocarpy? Give one example.  

Concept: Human Evolution
Chapter: [0.07] Human Evolution
[1]7.a.v

 Answer the following questions briefly: 
Mention any two objectives of ‘Swachh Bharat Abhiyan’. 

Concept: Human Evolution
Chapter: [0.07] Human Evolution
[5]7.b

 The diagram given below represents a system in the human body. Stud the diagram and answer the following questions:

Identify the system 

Concept: Functions of Female Reproductive Organs
Chapter: [0.034] The Reproductive System
[1]7.b.i

 The diagram given below represents a system in the human body. Stud the diagram and answer the following questions:

Identify the system 

Concept: Functions of Female Reproductive Organs
Chapter: [0.034] The Reproductive System
[1]7.b.ii

The diagram given below represents a system in the human body. Stud the diagram and answer the following questions:

 Label the parts marked 5 and 6. 

Concept: Functions of Female Reproductive Organs
Chapter: [0.034] The Reproductive System
[1]7.b.iii

The diagram given below represents a system in the human body. Stud the diagram and answer the following questions:

Name the two hormones secreted by 1. 

Concept: Functions of Female Reproductive Organs
Chapter: [0.034] The Reproductive System
[1]7.b.iv

 The diagram given below represents a system in the human body. Stud the diagram and answer the following questions: 

Mention the number and the name of the part involved in fertilization and implantation from the above diagram. 

Concept: Functions of Female Reproductive Organs
Chapter: [0.034] The Reproductive System
[1]7.b.v

The diagram given below represents a system in the human body. Stud the diagram and answer the following questions:

 Mention the surgical methods of contraception in:
1. Human males
2. Human females. 

Concept: Methods of Population Control - Vasectomy
Chapter: [0.06] Population
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