The narrow, elongated, hollow cells that make up xylem tissue of plants allow for a. the production of glucose by photosynthesis. b. pollination of flowers by insects. c. the longterm storage of starch for future energy requirements. d. the transport of water and ions.

The answer is; D

These cells are called plasmodesmata. They are significant in the symplastic flow (meaning through the cytoplasm) of water and other molecules in the plant. A membrane called desmotubule runs along the pores of adjacent plasmodesmata. These cells are also significant in the communication between cells.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.

a. an idea which cannot be disproven!

explanation: