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Lab (1)
Prokaryotic Algae
Division: Cyanophyta
Order: Chroococcales
Family: Chroococcaceae
Genus: Chroococcus
Gloeocapsa
Merismopedia
Family: Microcystaceae
Microcystis
Pigment: Chlorophyll a, Biliprotein (Phycoerythrin &Phycocyanin).
Food reserves: Cyanophycean starch & Cyanophycin protein
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Order: Oscillatoriales (Harmogonales)
Family: Oscillatoriaceae
Genus: Oscillatoria
Family: Rivulariaceae
Genus: Rivularia
Gloeotrichia
Family: Nostocaceae
Genus: Nostoc
Anabaena
Chroococcus sp. (The cells half circle in shape)
Merismopedia sp
The ellipsoidal cells are arranged in regular rows to form a plate or flat colonies.
Microcystis sp
The spherical to irregular cells are surrounded by mucilage sheath.
What is “Palmelloid”?
Palmelloid:- The cells remain held together in a mucilaginous matrix.
Oscillatoria sp
· This genus containing many species, in some of them the cells are broader than long, where as in other the reverse is true.
· There is no differentiation among the component cells of trichome except the apical cell.
· Have no mucilage sheath.
Gloeotrichia sp
· Is taper from basal to apex (hair like).
· The mucilage sheath envelopes body to end of akinete.
· The body differentiated into three types of cells :
1. Basal Heterocyst
2. Elongated Akinete
3. Vegetative cell
Rivularia sp.
· The sheath envelopes whole body
· Akinetes are lacking
Nostoc sp
· It is unbranched filamentous
· The body differentiated in to three types of cells: Heterocyst, Akinete & vegetative cell.
Anabaena sp
· It is unbranched filamentous
· The body differentiated in to three types of cells: Heterocyst, Akinete & vegetative cell.
· Anabaena differ from Nostoc in vegetative cells, are being dram or cylindrical shape. While in Nostoc small spherical.
· Anabaena & Nostoc use in rice field because of (N2) fixation
Gloeocapsa sp
· The cell rounded or rounded in poles
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .