Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Biology Zoology
What is the network of air tubes for gas exchanges in insects called?
1
Trachea
2
Spiracles
3
Bronchi
4
More than one of the above
5
None of the above