The most abundant class of phospholipid in animal cell membranes, with a hydrophobic tail composed of two fatty acyl chains, esterified to the two hydroxyl groups in glycerol phosphate and a polar head group attached to the phosphate group, is called: phosphoglyceride. cholesterol. glycolipid. liposome. phosphoglyceride and liposome.

Phosphoglyceride.

Explanation:

The cell membrane or plasma membrane is made up of lipid bilayer and proteins may be inserted or spans the membrane bilayer. The carbohydrate moieties are also present in association with lipids and proteins.

The phosphoglycerides are the most class of phospholipid present in plasma membrane. The phosphoglycerides consists of lipid bilayer linked with the hydroxyl group and the phosphate group is attached with the polar head group. The phosphate group attaches with the third carbon atom of the glycerol.

Thus, the correct answer is option (1).

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.