Algae Flashcards
Which organisms are the first group of plants with chlorophyll?
Algae
General characteristics of algae
- Chlorophyll and carotenoid present
- No vascular bundles; the body called thallus
- Mostly aquatic to suit reproductive activities
What kind of pigments can be found in algae?
Chlorophyll, Carotenoid, Xanthophyll, Phycobilin, Biliproteins
What kind of chlorophyll is usually found in algae?
Chlorophyll A
What are the types of cell walls found in algae?
- Silicified
- Cellulosic
- Mucopolymeric (Amino acids and amino sugars)
In which prokaryotes can mucopolymeric cell walls be found?
Cyanobacteria
What are the types of flagella found in algae?
Whiplash(unbranched) and tinsel (branched)
What are the types of flagella arrangment we have in alage?
Isokont (all flagella are of the same shape and size)
Heterokont (all flagella have different shapes and sizes)
Stephanokont (flagella arranged in a ring)
What are the types of food reserve in algae?
- Starch
- Oil
- Glycogen
Classification of algae based on habitat
Epiphytic (on organisms) Epipelic (on rocks) Endopelic (in rocks) Episammon (on sediments) Endolithic (In soil) Epilithic (on soil)
What are the forms in which algae exist?
Unicellular Multicellular Motile (chlamydomonas) Non-motile (chlorella) Filamentous (spirogyra) In colonies (volvox)
What are the types of reproduction in algae?
- Asexual
- Vegetative
- Sexual
What are the types of sexual reproduction in algae?
Isogamy
Anisogamy
Oogamy
Isogamy
Gametes that form a zygote are of the same shape and size. They are morphologically and physiologically the same
Anisogamy
Gametes are not of the same size and shape. The bigger gamete is assumed to be the female gamete.
Oogamy
Here, the male and female gametes are very different and easily identifiable.
Division
-phyta
Class
-phyceae
Order
-ales
Family
-aceae
What are the different plant divisions under algae?
Can Cole Eat Brown Rice, Pick Corn, Play Xylophone?
- Cyanobacteria
- Chlorophyta
- Euglenophyta
- Bacillariophyta
- Rhodophyta
- Phaeophyta
- Chrysophyta
- Pyrrhophyta
- Xanthophyta
Cyanobacteria
- Nostoc
- Anabaena
Chlorophyta
- Volvox
- Chlorella
Euglenophyta
- Euglena
Bacillariophyta
- Navicula
- Pinnuaria
- Cymbella
- Eunolia
Rhodophyta
Polysiphonia
Phaeophyta (Brown Algae)
- Fucus
- Sargassum
Chrysophyta (Golden Brown)
- Synura
- Paraphysomonas
Pyrrophyta (Dinoflagellates)
- Ceratium
- Peridinium
Xanthophyta
- Vaucheria
Economic importance of algae
They are used in industrial processes as thickening agents
Ecological importance of algae
They release O2 into the atmosphere through photosynthesis
