Category: BOTANY(I Year VIDEO)

Ectocarpus is a marine alga. The thallus is heterotrichous. It consists of a prostrate rhizoidal system and an erect branched system . The main pigment is xanthophyll. The cytoplasm contains polyphenol containing vacuoles called physodes. The asexual reproduction occurs by the formation of zoospores in two types of sporangia called unilocular sporangia and plurilocular sporangia. The sexual reproduction occurs by isogamy , morphological anisogamy and physiological anisogamy. In physiological anisogamy the male gametes are more active than the female gamete. Ectocarpus is a brown alga and shows Isomorphic alternation of generation.

Peziza is called as cup fungus. Peziza is a saprophytic and coprophilous fungus. The mycelium is profusely branched, uninucelate and cup shaped. The asexual reproduction occurs by means of conidia and chlamydophores and conidia. The sexual reproduction occurs by somatogamous copulation. The apothecium is the fruiting body. It is sessile and sub- sessile.