The length of carotenoids also has a role in plant coloration, as the length of the polyene tail determines which wavelengths of light the plant will absorb. Wavelengths that are not absorbed are reflected and are what we see as the color of a plant. Therefore, differing species will contain carotenoids with differing tail lengths allowing them to absorb and reflect different colors.
Rating Newest Oldest. Best Answer: they are all no, molluscs are clams, bivalves, and squid none of which have joints. Echinoderms-sea stars, urchins, and the such also do not have jointed appendages, further their bodies do not have segments.Source(s): zoology class. whiskeytangofoxtrot Â· 9 years ago.ating Newest Oldest. Best Answer: they are all no, molluscs are clams, bivalves, and squid none of which have joints. Echinoderms-sea stars, urchins, and the such also do not have jointed appendages, further their bodies do not have segments.
Phylum Arthropoda, Subphylum Crustacea Crustaceans are specialized for life in the water Most possess gills to obtain oxygen Chitinous exoskeleton reinforced with CaCO3 Two pairs of antennae Barnacles are crustaceans!The wonderful world of crustaceans!he majority of marine arthropods are crustaceans (subphylum Crustacea). Crustaceans are distinguished from other Arthropods by their possession of a pair of biramous (two-parted) limbs, and by a nauplius larval stage. Includes barnacles, shrimp, krill, crabs, lobsters, and copepods.