Question

what are the characteristics of spirogyra

Answer 1

The important characteristics of spirogyra are:

It is an unbranched, filamentous green algae occurring in the stagnant water so known as pond scum.

A mucilaginous covering or sheath is present which makes the surface slimy hence known as pond silk.

A double layered cell wall is present in which the outer wall is made of pectin and inner wall of cellulose.

A spirally coiled or ribbon shaped chloroplast with number of pyrenoids is present.

Reproduction occurs both in vegetative and sexual methods.

Vegetative reproduction is by fragmentation.

Sexual reproduction takes place by conjugation.

Three types of conjugation is found in spirogyra. They are i. scalariformconjugation, ii. Lateral conjugation, iii. Self conjugation.

The lifecycle of the spirogyra is haplobiontic.

Answer 2

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$\bold {Characteristics\: of\: spirogyra}$

=> 1. It is found in fresh water.

2. Its body is made up of long, shiny unbranched filaments which are found floating on the water surface. Its filaments are slippery in touch.

3. Its cell wall is made up of two layers. Outer layer is made up of cellulose and inner is made up of pectose.

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