Some cells produce and secret high levels of digest enzymes. which organelles would you expect to be abundant in those cells and why?

Lysosomes, because they are the organelles that secrete these hydrolytic enzymes and help break down old organelles, viral/bacterial invaders, and food particles.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

satellites are frequently used to make observations of the orbit on earth