A Hydra can suddenly contract its body by the contraction of_________
A. Musculo-glandular cells
B. Musculo-nutritive cells
C. Musculo- epithelial cells
D. Interstitial cells
Answer:C
A Hydra can suddenly contract its body by the contraction of_________
A. Musculo-glandular cells B. Musculo-nutritive cells C. Musculo- epithelial cells D. Interstitial cells