Alternation of generations means that plants produce:
only haploid multicellular organisms
only diploid multicellular organisms
only diploid multicellular organisms with single-celled haploid gametes
both haploid and diploid multicellular organisms

Alteration of generations means that plant produce both haploid and diploid multi-cellular organisms

Explanation:

Alteration of generations has 2 stages, gametophyte and sporophyte

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.