When a mosquito bites you, you are the HOST and the mosquito is the PARASITE.
Thus, Cactus survive with the help of its "green stems" and "transpiration".
Gene, as such traits are passed down through genes
I believe your answer would be Echinoderms and Chordates. I hope this helps!
the wavelength of infrared is larger than the ultraviolet and all frequency is smaller.