1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
When a fresh-water protozoan possessing a contractile vacuole, is placed in a glass containing marrine water, the vacuole will
A
increase in number
B
disappear
C
increase in size
D
decrease in size
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Sycon belongs to a group of animals, which are best described as
A
unicellular or acellular
B
multicellular without any tissue organization
C
multicellular with a gastrovascular system
D
multicellular having tissue organization, but no body cavity.
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Given below are four matchings of an animal and its kind of respiratory organ :
(A)  Silver fish      $$-$$      Trachea
(B)  Scorpion      $$-$$      Book lung
(C)  Sea squirt      $$-$$      Pharyngeal slits
(D)  Dolphin      $$-$$      Skin
The correct matchings are
A
(A) and (B)
B
(A), (B) and (C)
C
(B) and (D)
D
(C) and (D).
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Systemic heart refers to
A
the heart that contracts under stimulation from nervous system
B
left auricle and left ventricle in higher vertebrates
C
entire heart in lower vertebrates
D
the two ventricles together in humans.
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