Which statement is true for both incomplete and complete digestive systems? A. Materials enter and exit through the same opening. B. Digestion begins outside the cells. C. The digestive cavity is like a tube. D. Continuous feeding is possible.
@Destinymasha
Tell me......what are complete and incomplete digestive systems?
idk
Complete ---food comes though the mouth, and out the anus (2 openings) Incomplete ---(only one opening) So food goes in through the mouth, and leaves the same way
c
Nope, a tube has 2 openings <----you must consider So, its not true for both
Digestion does begin out of a cell, however :)
Which statement best describes one way that both plants and animals fight pathogens? A. Both have an antigen–antibody response. B. Both have a protective outer layer. C. Both produce lymphocytes. D. Both have a lymphatic system.
What do you think?
b
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