Botany lecture notes

Algae: General Characters PPT


Plant Science PPT

Algae: General Characters PPT
(General Characteristics of Algae PPT)

What are algae? General characteristics of algae, Classification of algae based on habitat, Thallus diversity in algae, Chloroplast shape variations in algae, Pigmentation in algae, Reproduction in algae, Life cycle in algae

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Botany lecture notes

Pigmentation in Algae PPT


Plant Science PPT

Pigments in Algae PPT
(Pigmentation in Algae PPT)

What are the major pigments of algae? What are different types of Chlorophylls present in algae? What are carotenoids? What are Phycobilins? What are Phycocyanin and Phycoerythrin? What are the main pigments of Green algae? What are the main pigments of Brown algae? What are the main pigments of Red algae? What are the main pigments of Blue Green Algae? What are the main pigments of Diatoms

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Botany lecture notes

Polysiphonia: Thallus Structure, Reproduction, Post Fertilization Changes and Life Cycle


Polysiphonia Post Fertilization Changes

Polysiphonia
(Thallus Structure, Reproduction, Post Fertilization Changes and Life Cycle)

Polysiphonia- Systematic Position

Division: Rhodophyta
Class: Rhodophyceae
Order: Ceramiales
Family: Ceramiaceae

Distribution of Polysiphonia

Ø  Polysiphonia is marine red algae belongs to the class Rhodophyceae.

Ø  They are abundantly present in the Atlantic Coasts of America.

Ø  Polysiphonia platycarpa is present in the Indian coastal regions.

Ø  Polysiphonia violacea is an epiphytic alga grown on some brown algae such as Fucus vesiculosus.

Ø  Some species of Polysiphonia are parasitic (example: Polysiphonia fastigiata).

Thallus Structure of Polysiphonia

Ø  As the name suggests, the thallus of Polysiphonia is siphonous with many interconnected filaments (siphons).

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Botany lecture notes

Similarities and Difference between Algae and Fungi (Comparison Table)


difference between fungi and algae

Algae vs Fungi
Similarities and Difference between Algae and Fungi

Algae and fungi are thallophytic cryptogams of plant Kingdom. Both algae and fungi share many common characteristics and thus they are treated in the same division Thallophyta of Cryptogams according to Eichler’s Classification. Even though they are in same class, thallophyta, they also show some distinct differences particularly in their mode of nutrition, physiology and reproduction. This post describes what are the Similarities and Difference between Algae and Fungi.

Similarities between Algae and Fungi

Ø  Both algae and fungi are thallophytes (plant body not differentiated into root, stem and leaves)

Ø  Both algae and fungi are placed together in the division thallophyta of cryptogams

Ø  With the exception of blue green algae, majority of algae and fungi are eukaryotic

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Botany lecture notes

Pigments in Algae (Key points) with PPT


pigments in algae

Pigmentation in algae:

Ø  Algae show great diversity in pigmentation.

Ø  Many coloured pigments such as green, red, yellow, and blue have been found in marine and freshwater algae.

Ø  Different groups of algae have different and specific pigment composition.

Ø  Pigments are usually found in specialized plastids called chromophores in all groups of algae except in the members of Cyanophyceae (blue green algae).

Ø  Distribution pattern of pigments has great taxonomic significance in algal systematics.

Ø  Classification of algae proposed by Fritsch is primarily based of the pigmentation of algae.

Ø  All major algal groups have at least one characteristic pigment in their cells.

Pigments in algae belong to THREE major categories based on their physical and chemical properties.

(1). Chlorophylls

(2). Carotenoids

(3). Phycobilins

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