Which of these statements is true regarding chlorophyll?

it is the rarest type of pigment in leaves.

it is the only type of pigment in leaves.

it is not the only photosynthetic pigment.

there is only one kind of chlorophyll

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.