ANSWERS: (a) Left auricle and left ventricle
(b) Post caval and right caval
(c) Right auricle and left auricle
(d) Right ventricle and pulmonary aorta
EXPLANATION: (a) The bicuspid valve is a valve consisting of two membranous flap or cups situated between the atrium and ventricle of the left side of the heart in mammals.
(19)
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