Question

Sketch label and describe the Spirogyra

Answer 1

Answer:

The genus Spirogyra belongs to the order Zygnematales and is a filamentous charophyte green alga that gets its name from the chloroplasts' distinctive helical or spiral structure.

Explanation:

• There are more than 400 different species of Spirogyra in the world, and they are typically found in freshwater settings.
• An unbranched filamentous thallus makes up the vegetative structure of the spirogyra.
• Each cylindrical cell in the multicellular thallus is connected end to end.
• They can expand several centimetres in length and range in width from 10 to 100 m.
• Because there is a mucilage coating surrounding the filament, they are visible as a slimy mass.
• The inner cellulose layer and the outside pectose layer make up the cell wall.
• The dissolving of pectose in water is what causes the slimy mucilage sheath.

Thus, these are the characteristics of Spirogyra.

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Answer 2

Answer:

Spirogyra

Spirogyra is free-floating inexperienced algae mainly observed in sparkling water. It has a filamentous structure. It has a spiral form chloroplast.  They can reproduce each sexually & asexually. It reproduces with the aid of using the sexual conjugation method & asexual duplicate happens with the aid of using fragmentation.

a)External features:

• Spirogyra has an unbranched and filamentous vegetative frame structure.
• It has a lengthy, slim, and multicellular plant frame.
• The filamentous frame incorporates several elongated and equal cells which can be organized vertically.
• Filament is generally surrounded with the aid of using a membrane of mucilage
• Protoplasm: Following elements are found in protoplasm:
• Plasma membrane: It is located simply under the cell wall. It covers the internal topics of the protoplasm.

(b)Internal Features:

• Cytoplasm is located within the cell wall that is a several jelly-like substance and presents very near the plasma membrane.
• Cell vacuole: Each molecule has a massive vacuole positioned in the center.
• Nucleus: Each incorporates a single nucleus. It stays suspended in the cytoplasm with the assistance of a few cytoplasm strains.
• The silvery granules found in every chloroplast are referred to as pyrenoids.
• Chloroplast: Chloroplasts of this all are lengthy and flattened as tape. They seem spiral across the social. Usually, the number of chloroplasts can also additionally range from one to seven.

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