CBSE Class 9 Answered

Characteristics of Division Thallophyta:

Small-sized and grow in moist places. Have an irregularly shaped, undifferentiated plant body called thallus. Have a cell wall made of cellulose. Have green pigment chlorophyll, but some may also have red or brown pigments. Autotrophic in nature and the reserve food material is generally starch. Do not have a vascular system. Asexual reproduction occurs through spore formation, while sexual reproduction occurs through conjugation.

Uses:

Often used as food. Used to obtain a gelling agent. Source of biofuels. Rich sources of vitamins and minerals. Pigments obtained from algae can be used as natural dyes.

Examples:

Nostoc Oscillatoria Spirulina Chara Chlamydomonas Spirogyra