A. Lungs and spiracles
B. Root hair and mammalian hair
C. Feathers and scales
D. Contractile vacuole and kidney
Correct Answer: Option B
B. Root hair and mammalian hair
A. Lungs and spiracles
B. Root hair and mammalian hair
C. Feathers and scales
D. Contractile vacuole and kidney
Correct Answer: Option B
B. Root hair and mammalian hair
Copyright warnings! Do not copy.