MCQ
In cockroach, male genital open into.....
- AMid- ventral region of $8^{th}$ segment
- ✓Mid-ventral region of $9^{th} $ segment
- CMid-ventral region of $10^{th}$ segment
- DMid-ventral region of $7^{th}$ segment
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$(a)$ Contraction of diaphragm
$(b)$ Contraction of external inter-costal muscles
$(c)$ Pulmonary volume decreases
$(d)$ Intra pulmonary pressure increases
$R$ : Thyroxine increases catabolism, produces energy and increases body temperature.