I have test pleas help Which of the following statements does not form part of the "cell theory"?

a) All living organisms are made of cells.

b) The cell is the basic functional unit of all living organisms.

c) All plants are made of cells, but only certain types of animals are.

d) All cells come from pre-existing cells.

C, All plants are made of cells, but only certain types of animals are.

Explanation:

In biology, Cell Theory is the historic scientific theory that is now universally accepted, that all living organisms are made up of cells and that cells are the basic structural / organizational unit of all organisms, and also the basic unit of reproduction.

In this question, it asked which does NOT form part of cell theory, and the answer to that is C, since "all plants are made of cells, but only certain types of animals are" isn't true to the cell theory, because the cell theory basically says that ALL living organisms are made out of cells, and that means ALL plants and ALL animals.

Hope this helps :)

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.