MCQ
In man the normal number of chromosomes is
- A$42$
- B$44$
- ✓$46$
- D$48$
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Aplysia, Asterias, Antedon, Echinus
$(I)$. pre and postsynaptic neurons are in very close proximity
$(II)$. pre and postsynaptic neurons are separated by synaptic cleft
$(III)$. impulse transmission is very fast
$(IV)$. electrical synapses are common in our system
Select the correct option
$I.$ Sweet potato
$II.$ Potato
$III.$ Filippers of penguins and dolphins
$IV.$ Hearts of different vertebrate
$V.$ Forelimbs of whales, bat and cheetah
The correct option is