Which of the following statements is/are correct? (MORE THAN ONE ANSWER)
A. Cnidarian can not reproduce sexually
B. Nematocysts are stinging structures that Cnidarians and many other animal Phyla possess.
C. Given the following on the organisms:
I. An animal
II. Multicellular
III. has tissues (diploblastic)
IV. lacks organs
V. is radially symmetrical
This organism could be a member of the Phylum Cnidaria
D. Sea anemones are members of the phylum Echinodermata
E. Members of Cnidaria have three layers of cells (triploblastic) including the endoderm, mesoglea, and ectoderm.

did you fail the test? xd

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

hope it ,

bioteacher101