Question

Classification of algae according to fritsch and lee

Answer 1

Algae have diverse characteristics. There are differences in their pigments, nature of cilia and nature of reserve food. They have been classified by many people on the basis of their physiological and morphological differences.

Fritsch classified algae into 11 classes on the basis of the type of pigments, mode of reproduction and nature of reserve food material. They are Chlorophyceae, Xanthophyceae, Chrysophyceae, Bacillariophyceae, Cryptophyceae, Dinophyceae, Chloromonodineae, Euglinineae, Phaeophyceae, Rhodophyceae and Myxophyceae (Cyanophyceae).

According to R.E. Lee algae can be classified into 4 groups.

Group 1 consists of prokaryotic algae known as Cyanophyta or blue-green algae.

Group 2 consists of Glaucophyta, Rhodophyta, and Chlorophyta.

Group 3 consists of Euglenophyta and Dinophyta.

Group 4 consists of algae which have two membranes of chloroplast endoplasmic reticulum. 

Answer 2

According to Fritsch, algae can be classified into 11 classes based on various aspects such as mode of pigmentation, reserve of food material and kind of pigments. The eleven classes are:

# Chlorophyceae (Green algae)

# Xanthophyceae (Yellow-green algae)

# Chrysophyceae

# Bacillariophyceae (Diatoms)

# Cryptophyceae

# Dinophyceae

# Chloromonadineae

# Euglenineae

# Phaeophyceae (Brown algae)

# Rhodophyceae (Red algae)

# Myxophyceae/Cyanophyceae (Blue-green algae)

Some of the above classes can be classified further into multiple orders.

 

Based on Lee’s classification, there are four groups:

# Group 1 featuring the prokaryotic algae comprising cyanophyta (blue-green algae)

# Group 2 comprising the chlorophyta (green algae), rhodophyta (red algae) and glaucophyta

# Group 3 comprising the dinophyta and euglenophyta

# Group 4 featuring algae with a dual membrane of chloroplast endoplasmic reticulum.