Question

the algal hyphae have many nuclei distributed in continuous cytoplasm. true or false ​

Answer 1

Algal hyphae

Explanation:

• In lichens the algal cells are surrounded by fungal hyphae to form new organism with its own metabolism and properties.
• Fungal hyphae aggregate to produce fungal pseudotissues.
• Hyphae consists of one or more cells surrounded by a tubular cell wall.
• In most fungi hyphae are divided into cells by internal cross walls septa.
• Septa are usually perforated by pores large enough for  ribosomes, mitochondria and sometimes nuclei to flow between cells.

Answer 2

The statement is true. Coenocytic algal hyphae cells are multi-nucleated.

• In coenocytic algae, the cytoplasmic and nuclear content of the cell is not separated by any septum/ transverse cross walls or cell walls.
• A coenocytic cell is also known as coenobium.
• Such hyphal cells occur as the result of multiple nuclear divisions (Karyokinesis) within the cell i.e not followed by the cytoplasmic division(cytokinesis).
• All the nucleus thus formed appears to be embedded in a common cytoplasm.
• Coenocytes are usually unicellular but when the reproductive structures are formed, they may be delimited by a transverse septum.
• Coenocytes may vary in size but the majority of the coenocytic algae are macroscopic ones, visible by naked eyes. eg. stolons of Caulerpa species.
• The Latest studies show that coenocytes are able to seal and repair damages to their enclosing membrane and regenerative capacity has also been reported in some Chlorophyceae members and Caulerpales if any thalloid tissue is lost.
• Examples of other coenocytic algae are Chara(Chlorophyceae), Vaucheria(Xanthophyceae), Griffithisia(Rhodophyceae) etc.