Euglenoids have a flexible pellicle composed of

carbohydrates.

lipids.

protein. nvm the pellicle is composed of fibrous elastic protein, small amount of lipid or/and carbohydrates and maintains a definite shape. it is flexible enough to permit temporary changes in the body shape.

none of the above

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.