The development of seeds are considered to one of the most important in the evolution of land plants especially the spore-bearing vascular plants. The seeds will serve as the alternative means of dispersal for reproduction purposes especially in areas where there is no water.
Answer:
Option A, Forms a helix and no branch points
Explanation:
As we know that amylose is a straight chain molecule, therefore it forms helix and consists of branching. This is the reason why amylose has no branch points.
However, amylopectin is a branched chain molecule polymer. The monomer unit in both amylose and amylopectin is glucose - D connected at 1, 4 carbon . The number of glucose molecules are higher in amylopectin than the amylose.
Hence out of all given options, option A is correct
Three examples are red blood cells, root hair cells, and sperm cell.
The membrane allows proteins to pass through