Question

write a note on economic importance of algae and gymnosperms.​

Answer 1

Answer:

Economic importance of algae: Algae are useful to man in a variety of ways. They perform half of the total carbon dioxide-fixation on earth by photosynthesis, acting as the primary producers in aquatic habitats. Many species of marine algae such as Porphyra, Sargassum, and Laminaria are edible.

Gymnosperms have major economic uses. Pine, fir, spruce, and cedar are all examples of conifers that are used for lumber, paper production, and resin. Some other common uses for gymnosperms are soap, varnish, nail polish, food, gum, and perfumes.

Answer 2

Answer:

Importance of Algae

• Algae fixes Carbon dioxide with the help of photosynthesis

• It increases the level of dissolved oxygen in their immediate environment

• They produce rich compounds that serve as food for aquatic animals.

• Marine algae are used as food ex: Laminaria and Sargassum

• Certain algae are used as hydrocolloids

• Agar is used in growing microorganisms and in preparation of jellies.

• Chlorella is used as food by space travellers.

Importance of Gymnosperms

• Gymnosperms plants are used as ornamentals. Some are features in formal gardens – used for bonsai

• Their fibers are used in the preparation of paper pulp.

• Turpentine and resins are obtained from confers resin

• Useful oils are extracted from gymnosperms like junipers, pines, hemlock, fir, spruces, and arborvitae.

• Gymnosperm seeds are used as food products like bakery items.

• Occassionaly used to create silk and other textiles