In Addition to Seeds, Which of the Following Characteristics Is

Question

In addition to seeds, which of the following characteristics is unique to seed-producing plants?
A) sporopollenin
B) lignin present in cell walls
C) pollen
D) megaphylls

Accepted Answer

Pollen is unique to seed-producing plants, allowing them to transfer male gametes to female gametes without the need for water, distinguishing them from non-seed plants like mosses and ferns. Sporopollenin is found in the walls of spores and pollen grains in all land plants, lignin is present in the cell walls of many plants, not just seed-producing ones, and megaphylls (leaves with a highly branched vascular system) are found in both seed-producing plants and some non-seed plants.