February 16, 2012

Reproduction Algae are able to reproduce sexually and asexually. Sexual reproduction in algae is very rare because of the complexity of gamete transportation and because of this most algae may never get to reproduce sexually. There are two types of asexual reproduction in which algae take part in, they are daughter colony formation and sporulation. In daughter colony formation a group of algae will begin to create small duplicates of itself inside of the parent algae. After a while the parent will burst and let loose the daughter algae. Aside from daughter colony formation, algae also use sporulation as a means to reproduce. Sporulation is used by algae more than daughter colony formation. It consists of the parent algae creating reproductive cells within the cell walls. The zoospores(reproductive cells) escape from the parent cell and attach themselves to surface where they turn into filaments. Algae also reproduce sexually and the combination of gametes identifies isogamy and heterogamy,which are two classes of sexual reproduction. Isogametes are gametes that are alike in size and shape. In isogamy, the gametes that are being combined do not have any physical peculiarity amid male and female gametes. The isogametes side with each other's flagellar extremities touching and after a short time they form one, immobile diploid zygote. Unlike isogamy, heterogamy is the uniting of a male gamete and a female gamete. The algae produces sperm in large amounts and the egg cell that is produced is bigger than the sperm and unlike the sperm cell, it is immobile.

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