The correct answer is: d. it contains many light-sensing columns called ommatidia
Ommatidia are units that form compound eyes of arthropods such as insects, crustaceans and millipedes (these are invertebrates) and make them very sensitive to motion. Ommatidia are composed of photoreceptor cells (visual detection) surrounded by support cells and pigment cells.
The eyes of vertebrates are more complex showing that progressive improvements in the structure of the eye occurred during the evolution.
Answer: Blood
Explanation:
Blood can transport nutrients, vitamins and minerals to the cells.
Answer:
I think the answer would be C.
Explanation:
D is wrong for obvious reasons, elimanate any silly or impossible answers.
Since poly means muliple, and single means, not muliple (in most cases), B is elimanated.
Since Grapihic usaully refers to things that can been seen, where genic ussaully refers to more so like personality characteristics.
