Answer:
an incident ray
Explanation:
An incident ray is a ray of light that strikes a surface.
So, I decided to take another whack at this, specifically number 3, and at first I didn't really try to answer 'cause I have no clue what the word dueterostome means, but I do know that, for the other two criteria, A, arthropods is the only one that fits both.
also, on 6, it is b, because I remembered what an anther is and it has nothing to do with the eggs (it's the testes, pretty much)
and if I had to guess at 8, I would say it is d because all the others are characteristics of sexual reproduction. (I'm not sure of this, though, because I'm not sure where this defines the line for mitosis, both go through it, but at different points in the process, so I assume it isn't that one.)
I believe it's D) variable :)
The complete question is attached as an image with the evolutionary tree:
Answer:
The correct answer is option D. Gibbon, orangutan, common Chimpanzee, bonobo, And Human.
Explanation:
The arboreal life of primates is possible by adapting from the tree-dwellers. Therefore the tree-dwellers are ancestors of all primates. The adaptation primates developed and exhibits are such as thumb for grasping, separated big toes, rotating shoulder joint and stereoscopic vision.
Stereoscopic vision is to provides better vision to have a better view and sharp vision to see an object from distance and moving through trees. It is present in almost all including Gibbon, orangutan, common Chimpanzee, bonobo, And Human.