WebSexual reproduction. The sex organs of ferns are of two types. The sperm-producing organ, the antheridium, consists of a jacket of sterile cells with sperm-producing cells inside.Antheridia may be sunken (as in the families Ophioglossaceae and Marattiaceae) or protruding.They vary in size from those with hundreds of sperm to those with only 12 or … WebThe prothallus consists of haploid male sex organ, antheridia and female sex organ, archegonia which give rise to antherozoids and eggs respectively. Fertilisation: Fertilisation occurs with the help of water. The diploid zygote develops into an embryo that finally forms a sporophyte. Nature of the prothallus:
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WebView Bot Lab - Fern Life Cycle.docx from BIO 100 at Claremont McKenna College. Life Cycle of Ferns When we think of ferns, we probably imagine something similar to the Boston ferns that we see for. Expert Help. Study Resources. Log in Join. Claremont McKenna College. BIO. Gametophytes contain both female (archegonium) and male (antheridium) sex organs. They mature at different times in order to increase the chances of cross-fertilisation and genetic variation. The prothallus is the fern gametophyte. It is a green, photosynthetic structure that is one cell thick, usually heart … See more Meiosis is a type of cell division that produces gametes – cells that contain half the number of chromosomes than the parent cell. In ferns, … See more The archegonium is the female sex organ. These are flask-shaped structures that produce an egg, which is reached by the sperm swimming down the neck. Acknowledgement: Ohio State University See more Fertilisation occurs when the fern’s egg and sperm combine to form a zygote. Ferns require water to enable the movement of the sperm to reach the egg. A zygote is a combination of genetic material from both … See more The antheridium is the male sex organ. These are small spherical structures that produce flagellate sperm. Acknowledgement: Ohio State University See more special occasions wv
6.2.2: Ferns - Biology LibreTexts
WebSometime prothallus of fern give rise to a fern plant. It is an example of [CPMT 1983] ... Mosses and ferns are found in moist and shady places because both [AIIMS 2004] A) Require presence of water ... Female sex organs done clear. C) ... WebUnderstand the nature of a prothallus and a sorus, and the roles they play in a fern life cycle. Introduction In algae, fungi, and other relatively primitive organisms that in the past were regarded as plants, the gametes (sex cells) are produced in single-celled gametangia, and the zygote often undergoes meiosis directly. WebThe prothallus grows male organs, which produce sperm, and female organs, which produce eggs, on its underside. The sperm must “swim” in a drop of water to an egg to … special occasions rhinestone purses