Question

Question 38 2 pts In addition to seeds, which of the following characteristics are unique to the seed-producing plants? O vascular tissue use of air currents as a dispersal agent O sporopollenin megaphylls O pollen

Answer 1

Ans.38. pollen.

In addition to seeds, pollen is characteristics are unique to the seed-producing plants.

Pollen is a powdery substance that consist in plants pollen is used for transfer haploid male genetic material from the anther of a single flower to the stigma of another via process that called pollination. pollen grains which are male microgametophytes of seed plants, and pollen grains are producing a male gamats. Outer layer of pollen grains are made-up of sporopolinin. That are too much hard. This protect pollen grains in a process of pollination. Means to transfer from stamen to pistil of flowering plants.

Ans. by facilitating dispersal of seeds

this is a process or mechanism which seed of angiosperm plants are transported to new site for a process of germination and also establishment of a new generation. There are a main five modes that are help in seed dispersal and that are gravity,wind, ballistic,water and by animal. But some plants are dispersal seed only through environment factors.