Respiration

Q.

Which of the following organisms can breathe through their skin?

1. Earthworm

2. Cockroach

3. Frog

4. Bird

Q.

Why does breathing become faster while doing exercise?

Q.

What is the percentage of oxygen in the air we inhale?

1. 16.4%

2. 21%

3. 18%

4. 20%

Q. What is the significance of the presence of mucus and hair in nasal cavity?

Q.

The energy­ releasing metabolic process in which substrate is oxidized without an external electron acceptor is called:

1. Fermentation

2. Glycolysis

3. Photorespiration

4. Aerobic respiration

Q.

Glucose is oxidized into carbon dioxide, water and energy in __ respiration.

Q.

The experimental leaf (covered with black paper strips/ light screen) should be tested for the presence of

1. Sugar in leaf

2. Starch in leaf

3. Water in leaf

4. Carbon dioxide in leaf.

Q.

Lactic acid produced during anaerobic respiration can be broken down completely when ________ is supplied.

1. carbon dioxide

2. water

3. glucose

4. oxygen

Q. Fishes breathe through their ___.

1. fins
2. gills
3. nose
4. mouth

Q.

Complete the following equation of respiration by selecting the correct option:

Glucose + $\underset{–}{\left(i\right)}$ $\to$ Water + $\underset{–}{\left(ii\right)}$ + Energy

1. (i) – Oxygen, (ii) - Carbon dioxide

2. (i) – Oxygen, (ii) – Glucose oxide

3. (i) – Carbon dioxide, (ii) – Glucose carbonate

4. (i) – Mitochondria, (ii) - Alveoli

Q.

Choose the correct option-

Anaerobic breakdown of glucose in our muscles produces-

1. Lactic acid

2. Pyruvate

3. Oxalic acid

4. Ethyl alcohol

Q. Q:What function does the nose have in respiration?

Q.

What is the purpose of respiration in humans?

Q.

What is a Normal Respiration rate?

Q.

Why do we get instant energy from glucose?

Q.

How are combustion and cellular respiration similar to each other ?

Q.

How does respiration take place in muscles? Give equation for the same

Q. How many organs are in the respiratory system?

Q. The type of respiration that occurs in the absence of oxygen is called:

1. Aerobic respiration
2. Anaerobic respiration
3. Cellular respiration
4. Incomplete respiration

Q. What is respiration? What are the two types of respiration.

Q. ‘P’ – Glucose → Carbon dioxide + Water + Energy

‘P’ – ग्लूकोस → कार्बन डाइऑक्साइड + जल + ऊर्जा

‘Q’ – Glucose → Carbon dioxide + Alcohol + Energy

‘Q’ – ग्लूकोस → कार्बन डाइऑक्साइड + ऐल्कोहॉल + ऊर्जा

‘R’ – Glucose → Lactic acid + Energy

‘R’ – ग्लूकोस → लैक्टिक अम्ल + ऊर्जा

Classify the given reactions ‘P’, ‘Q’ and ‘R’ as aerobic and anaerobic and select the correct option.

दी गई अभिक्रियाओं ‘P’, ‘Q’ तथा ‘R’ को वायवीय और अवायवीय के रूप में वर्गीकृत कीजिए तथा सही विकल्प का चयन कीजिए।

	Aerobic वायवीय	Anaerobic अवायवीय
(1)	Q and R Q तथा R	P
(2)	P and R P तथा R	Q
(3)	P	Q and R Q तथा R
(4)	Q	P and R P तथा R

1. (1)
2. (2)
3. (3)
4. (4)

Q.

How lactic acid is formed ?

Q.

Give one word for the following:
Organs that remove carbon dioxide from the body.

Q.

Openings on the side of the body in cockroach are _________.

1. Tubes

2. None of these

3. Trachea

4. Spiracles

Q.

Differentiate between aerobic and anaerobic respiration. (end-products of the process).

Q. The energy stored in food is released during ............•





This is the blank 👆☝👆👆

Q. Fierce pangs of hunger are generally felt after a strenuous physical activity. Why? [2 MARKS]

Q.

Give one example of each of the following:

An aquatic plant used in the lab to demonstrate O₂ liberation during photosynthesis.

Q. Which of the following structures in cockroach is analogous to nose in humans?

1. Feet
2. Skin
3. Spiracles
4. Lungs

Q.

Question 19
Observe the figures given as Figure 10.3 (A) and (B) and answer the following.

(a) Which of the figures A or B indicates the process of inhalation and which the process of exhalation?

(b) In the figure label the arrows and indicate the direction of
(i) movement of air
(ii) movement of diaphragm
(iii) movement of the rib