Options:
- A. Psilopsida
- B. Lycopsida
- C. Sphenopsida
- D. Prteropsida
View Answer
A. Psilopsida
A. Psilopsida
D. Having slow but prolonged effects
A. Hydra
A. Na+
B. Slime
C. Nematodes
C. To provide space for the development of organs and systems
B. Annelids
B. Enterobius vermicularis
B. mitosis