Question 1

Q1: What is the difference between growth and development? Explain.

Accepted Answer

Growth and development are related but distinct processes. The key differences between them, based on the provided text, are as follows:    Nature: Growth is a quantitative process, meaning it involves an increase in size, shape, height, and weight. It is a tangible biological process that can be me...

Question 2

Q2: Define growth and development and explain the factors affecting growth and development.

Accepted Answer

Definition of Growth and Development Growth is a biological process that refers to the quantitative increase in the size and shape of the body and its organs. It is a physical change involving an increase in mass, height, and weight. The process of growth begins at conception and continues until com...

Question 3

Q3: Explain the effects of exercise on muscular system.

Accepted Answer

Regular exercise and training induce several significant changes in the muscular system, enhancing its function and performance. The key effects are as follows:    Muscular Hypertrophy: This refers to the enlargement of muscles due to regular exercise. The diameter and length of muscle fibers increa...

Question 4

Q4: Enlist and explain the effects of exercise on respiratory system.

Accepted Answer

Exercise has several significant effects on the respiratory system, which helps in supplying adequate oxygen and removing carbon dioxide from the body. These effects are:    Tidal Volume: This is the volume of air inspired or expired in a single breath. At rest, it is about 500 ml. During exercise,...

Question 5

Q5: Explain physical and physiological changes that take place during different developmental stages.

Accepted Answer

Physical and physiological changes occur continuously throughout life, with specific characteristics defining different developmental stages. 1. Early Childhood (Birth to 8 years) This period is marked by tremendous and rapid growth.    Physical Changes: Between birth and age three, a child typicall...

Question 6

Q1: What is meant by cardiac output?

Accepted Answer

Cardiac output is the amount of blood pumped out by each ventricle of the heart in one minute. It is calculated as the product of stroke volume (the amount of blood pumped per beat) and heart rate (the number of beats per minute). At rest, it is around 5 litres/minute, but it can increase four to fi...

Question 7

Q2: Write down the full form of MV.

Accepted Answer

The provided text does not use the acronym MV. It uses PV, which stands for Pulmonary Ventilation. However, in physiology, MV commonly stands for Minute Ventilation, which is the same concept as Pulmonary Ventilation: the total volume of gas inhaled or exhaled from a person's lungs per minute.

Question 8

Q3: What is Muscle Hypertrophy?

Accepted Answer

Muscle hypertrophy is the increase in the size of muscles as a result of regular exercise or training. This enlargement occurs because the diameter and length of the muscle fibers increase. It also involves an increase in the total amount of protein, glycogen, and enzymes stored within the muscle ce...

Question 9

Q4: List the developmental stages of life.

Accepted Answer

Based on the provided text, the developmental stages of life discussed are: 1.  Early Childhood 2.  Middle Childhood 3.  Adolescence

Question 10

Q5: What is general warm-up?

Accepted Answer

A general warm-up involves rhythmic movements using large muscle groups to prepare the body for more intense activity. It consists of light physical activities like walking, jogging, skipping, or easy aerobics. The purpose is to increase the body temperature, reduce viscosity in muscle fibers, and i...

Question 11

Q6: What is specific warm-up?

Accepted Answer

A specific warm-up consists of exercises that are directly related to the main activity or sport to be performed. It involves more vigorous activity that reflects the types of movements and actions required during the sporting event. For example, a basketball player practicing lay-up shots or a weig...

Question 12

Q1: Growth refers to the process through which body increases in _____ and _____ .

Accepted Answer

Growth refers to the process through which body increases in size and shape.

Question 13

Q2: There are _____ major factors which directly or indirectly influence the growth and development of a _____ .

Accepted Answer

There are several major factors which directly or indirectly influence the growth and development of a living organism.

Question 14

Q3: Hormones play an important role in regulating the process of _____ and _____ .

Accepted Answer

Hormones play an important role in regulating the process of growth and development.

Question 15

Q4: An increased tidal volume, or increased respiratory rate, or both is referred to as _____ .

Accepted Answer

An increased tidal volume, or increased respiratory rate, or both is referred to as hyperventilation.

Question 16

Q5: Heart rate _____ during submaximal exercise and it is caused due to increase in _____ activity.

Accepted Answer

Heart rate increases during submaximal exercise and it is caused due to increase in muscular activity.

Question 17

Q6: _____ with high velocity movement develops exploring strength or power.

Accepted Answer

Exercise with high velocity movement develops exploring strength or power.

Question 18

Q1: 1. Stroke Volume	 a. Lung 2. Residual Volume	 b. Muscles 3. Lactic Acid	 c. Heart 4. Snatch	 d. Basketball 5. Gliding	 e. Weight lifting

Accepted Answer

1.  Stroke Volume - c. Heart 2.  Residual Volume - a. Lung 3.  Lactic Acid - b. Muscles 4.  Snatch - e. Weight lifting 5.  Gliding - d. Basketball Note:    The term 'Residual Volume' is not mentioned in the provided chapter text, but it is a measure of lung capacity, making 'Lung' the correct contex...

NCERT Solutions