True, meristem cells are undifferentiated
The actual answer (sorry for the late reply, but this is for the rest of the people coming afterwards) would actually be B) Switch primitive reptile with primitive insect. Insects came before any reptiles.
Triglycerides vary with respect to the number of - C atoms and double bonds in the tails.
Triglycerides are esters derived from glycerol and three fatty acids. These are the main constituents of body fat in humans and other animals, as well as vegetable fat. There are two main types of triglycerides - saturated and unsaturated.
Answer:
ATP synthesis, through cell respiration.
