1
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. AIPMT 2011 Prelims Biology - Breathing and Exchange of Gases Question 18 English
A
D : capillary wall - exchange of O2 and CO2 takes place here
B
B : red blood cells - transport of CO2 mainly.
C
A : alveolar cavity - main site of exchange of respiratory gases
D
C : arterial capillary - passes oxygen to tissues
2
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Mutations can be induced with :
A
Gamma radiation
B
Infra Red radiations
C
IAA
D
Ethylene
3
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?
A
42
B
63
C
84
D
21
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following acts as a physiological barrier to the entry of microorganisms in human body?
A
Epithelium of urogenital tract
B
Tears
C
Monocytes
D
Skin
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