Question

What is the approximate length of an alimentary canal ?

A) 3m B) 4m C) 5m D) 7 - 8m

Q33 Which organelle is called power house of cell ?

A) Mitochondria B) Golgi body C) Ribosomes D) None

Q34 Which respiration is much efficient ?

A) aerobic B) anaerobic C) both are equal D) none

Q35 Write full form of ATP.

A) adenosine diphosphate B) adenosine phosphate

C) adenosine triphosphate D) none

Q36 Which of the following statement(s) is (are) true about respiration ?

A) During inhalation, ribs move inward and diaphragm is raised

B) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses

C) Into blood and carbon dioxide from blood into alveolar air sacs

D) Haemoglobin has greater affinity for carbon dioxide than oxygen Alveoli does not help in increasing

surface area for exchange of gases

Q37 During respiration exchange of gases takes place in_______.

A) Trachea and larynx B) Alveoli of lungs

C) Alveoli and throat D) Throat and larynx

Q38 The only artery which carries deoxygenated blood is :

A) Pulmonary artery B) Renal artery C) Hepatic artery D)Coronary artery

Q39 Respiratory pigment in human body is

A) Chlorophyll B) Water C) Blood D) Haemoglobin

Q40. Blood consist of what fluid medium ?

A) Lymph B) Platelets C) Plasma D) All of these​

Answer 1

Explanation:

32. d

33. a

34. a

35. c

36. Which of the following statement(s) is (are) true about respiration?

A) During inhalation, ribs move inward and the diaphragm is raised

B) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into alveolar air sacs

C) Haemoglobin has a greater affinity for carbon dioxide than oxygen

D)Alveoli does not help in increasing surface area for the exchange of gases

OPTION B AND C ARE CORRECT

OPTION A AND D ARE WRONG

(n, please if you want a correct answer at least write the questions properly)

37. b

38. a

39. d

40. c