general account evolution economic importance

1. Chlorophyta

2. Presented by:
Zainab Rana
Presented to:
DR Umair Ahmad Awan

3. Table of Contents
 Biochemistry of chlorophyta
 Ecology of chlorophyta
 Economic importance of chlorophyta

4. Biochemistry
 Chlorophyll a and b present
 Caroteniods are also present
 Chlorophyta share the same pigments as land plants

5. Ecology
 Species of Chlorophyta are common inhabitants of marine
freshwater and terrestrial environments
 Several species have adapted to specialized and extreme
environments
 Such as deserts, arctic environments, hypersaline habitats,
marine deep waters, deep-sea hydrothermal vents and
habitats that experiences extreme changes in temperature,
light and salinity
 Some groups are exclusively found on land
 such as the Trentepohliales

6. Cont….
 Several species of Chlorophyta live in symbiosis with a
diverse range of eukaryotes
 Including fungi, ciliates, forams, cnidarians and molluscs
 Some species of Chlorophyta are heterotrophic, either free-
living or parasitic
 Two common species of the heterotrophic green
alga Prototheca are pathogenic and can cause the
disease protothecosis in humans and animals

8. Economic importance
 Food
• A number of green algae are used as food
• For example Ulva, Caulerpa, Enteromorpha
• Chlorella can yield food rich in lipids, proteins, vitamins and
minerals
 Antibiotics
• They can be extracted from Chlorella and Caulerpa

9. Cont…..
Cont……
 Parasites
• Cephaleuros virescens causes red rust of tea
• It also reduce the yield of tea
• Also reduce the yield of coffee, pepper, citrus etc
 Sewage oxidation
• Sewage oxidation ponds contain a number of green algae
• For example Chlamydomonas, Chlorella

10. Cont….
 Green algae as Ancestors of land plants
• There are no biochemical, cytological and morphological
similarities between land pants and any other group of algae
except the green ones or chlorophyta
 But:
• Both posses same type of chlorophyll a and b
• Carotenoids pigments are similar in two groups
• Flagella are similar in motile form of the two

12. Thank you