MCQ
The membrane covering the lungs is called:
- APeritoneum
- ✓Pleura
- CPericardium
- DDuramater
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$(i)$ Increase in mass $(ii)$ Differentiation $(iii)$ Increase in number of individuals $(iv)$ Response to stimuli
$(i)$ The body of the cockroach is segmented and divisible into three distinct regions - head, thorax and abdomen.
$(ii)$ Blood vascular system is of closed type.
$(iii)$ They are monoecious and both seves have well developed reproductive organs.
$(iv)$ The development of P. americana is paurometabolus, meaning there is development through nymphal stage.