- Fresh water or marine algae, with unicellular or multicellular body.
- Cells are eukaryotic, containing cellulose in the cell wall.
- Chief pigments include chlorophyll a and b, alpha, beta and gamma carotenes, lycopene, hexanthin, lentin, violaxanthin and astaxanthin.
What are the important features and life history chlorophyceae?
Chlorophyceae is very large group of algae and is represented by about 429 genera and 6500 species. Chlorophyceae are mainly
fresh water algae
(about 90 percent species are fresh water and 10 percent marine). Fresh water forms are common in ponds, pools, lakes, ditches, water tanks, and in river and canals.
What are the characteristics features of chlorophyceae?
- the body may be unicellular, colonial, filamentous or multicellular.
- They are usually green due to the presence of chlorophyll a, chlorophyll b and beta-carotene.
- The chloroplast may be discoid, cup-shaped (e.g. Chlamydomonas), spiral or ribbon shaped (e.g. Spirogyra)
What is the function of chlorophyceae?
Chlorophyceae (green algae) starch is similar to that of higher plants, and several species have been used in
studies of starch biosynthesis
. In a recent set of studies, Ball et al. used Chlamydomonas reinhardtii to study starch biosynthesis.
What is chlorophyceae in biology?
Chlorophyceae (chloros, green; phyceae, algal organisation) is commonly known as
green algae'
. … The name green alga is given because of the presence of dominant pigments like Chlorophylls a and b over the carotenoids and xanthophylls. They are all eukaryotes.
What is the major pigment of chlorophyceae?
| Class Common Name Major Pigments | Chlorophyceae Phaeophyceae Rhodophyceae Green algae Brown algae Red algae Chlorophyll-a and chlorophyll-b. Chlorophyll-a, chlorophyll -c, Fucoxanthin. Chlorophyll-a, chlorophyll-d. Phycoerythrin. |
|---|
What are the main characteristics of green algae?
The typical green algal cell, which can be motile or nonmotile, has
a central vacuole
, pigments contained in plastids that vary in shape in different species, and a two-layered cellulose and pectin cell wall. Food is stored as starch in pyrenoids (proteinaceous cores within the plastids).
What is the life cycle of chlorophyceae?
This type is found in all chlorophyceae. In such cases the somatic phasse (plant) is haploid (Gametophyte) while the diploid phase (sporophte) is represented by zygote. During germination the zygote (2n) divides meiotically producing haploid (n) zoospores, which develop into individual plant.
What are the 11 algae classes?
There are 11 types of algae such as Chlorophyceae (Green algae),
Phaeophyceae (Brown Algae)
, Rhodophyceae (Red Algae), Xanthophyceae (Yellow-Green Algae), Chrysophyceae (Golden Algae), Bacillariophyceae (Diatoms), Cryptophyceae, Dinophyceae, Chloromonadineae, Euglenineae, and Cyanophyceae or Myxophyceae (Blue-green …
What are the classes of chlorophyta?
1.3 Green seaweed (Chlorophyta)
They grow in marine- or freshwater lakes and rivers. This phylum contains
nine classes
. Chlorodendrophyceae (46 species), Chlorophyceae (3046 species), Ulvophyceae (1610 species), and Trebouxiophyceae (672 species) are the four main classes (Guiry and Guiry, 2014).
What is the stored food of chlorophyceae?
In chlorophyceae, the stored food material is
starch
and the major pigments are chlorophyll a and d.
Why Myxophyceae are called so?
Blue-Green Algae (Myxophyceae)
The Red Sea owes its name
to a free-floating form
, Trichodesmium erythraeum (fig. 68a), which has a red accessory pigment and is responsible for the red color sometimes observed in the surface waters. Thus, “blue-green algae” may be red.
Are chlorophyceae hydrocolloids?
Certain marine
brown
and red algae produce large amounts of hydrocolloids which are used commercially. … The algae are divided into three main classes: Chlorophyceae, Phaeophyceae and Rhodophyceae. Chlorophyceae. Commonly called as green algae.
What is Algin in biology?
Alginic acid, also called algin, is
a naturally occurring, edible polysaccharide found in brown algae
. It is hydrophilic and forms a viscous gum when hydrated. With metals such as sodium and calcium, its salts are known as alginates.
What is algae 10th?
“Alga is a term that describes
a large and incredibly diverse group of eukaryotic, photosynthetic lifeforms
. These organisms do not share a common ancestor and hence, are not related to each other (polyphyletic).” Multicellular examples of algae include the giant kelp and brown algae.
