<span>Gametophyte stage is the stage in the life cycle of the plants where the changes happen in the generations which are basically a sexual phase in the plant's life. So the haploid Gametophyte stage produces gametes (eggs and sperm) by mitosis. The spores produced from the meiosis grow into gametophyte which goes through mitosis to attain the above mentioned alterations.</span>
Answer:
Cellulose
Explanation:
trunk is the main axis of a tree that supports the branches and is supported by roots. Cellulose makes it sturdy. Cellulose is the main substance in the walls of plant cells, helping them to remain stiff and upright.
Answer:
Eutrophication
Explanation:
Eutrophication is the name given to the natural nutrient enrichment of a shallow lake, estuary, or slow-moving stream. It is caused mostly by runoff of plant nutrients, such as nitrates and phosphates, from surrounding land.