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";s:4:"text";s:3772:"Learn vocabulary, terms, and more with flashcards, games, and other study tools. Water is required in order for spores to germinate and form a new gametophyte moss plant. The male gametophyte containing the generative cell splits into two sperm nuclei, one of which fuses with the egg, while the other degenerates. Lv 7. The main difference between pollination and fertilization is in the mechanisms of each of the two processes. The male cones release pollen. 8 years ago. How are the environmental agents for unitintg sperm and egg different in pines and bryophytes? As the male gametophyte, pollen is a multicellular, haploid stage that produces the sperm.. Pollen development occurs in a structure called the microsporangium (micro = small), located within the … What is the Malayalam word for kalonji. Also they have distinctive individuals. How are the environmental agents for uniting sperm and egg different in pines and bryophytes? Where are the sporangia located? Unanswered Questions . SELF-FERTILIZATION. A high rate of bivalent mis-segregation leading to aneuploid eggs follows the loss of individual SAC components, which suggests that this checkpoint serves a necessary component in maintaining a high rate of faithful chromosome division in MI [34,36,37,40,47]. The skewed paternity patterns recorded in the present study might be a result of precopulatory processes, competition among sperm from different partners, and/or selective storage and use of allosperm from the receiver. What is the hidden meaning of GI over CCC. The Devonian was a period of major change for the planet. The scales of the cones are closed during development of … How are the environmental agents for uniting sperm and egg different in pines and bryophytes? The environmental agent that unites sperm and egg in Bryophytes is water. In mosses, the gametophyte and the sporophyte are the same size and have the same structures. The environmental agent that unites sperm and egg in Bryophytes is water. In plants group (i.e. The ancestors of green algae had migrated from their marine and freshwater environments onto land earlier in the Paleozoic era and began to evolve stems and roots to enable their survival in the harsh conditions they … Spore, reproductive cell ... Spores are agents of asexual reproduction, ... Fertilization occurs with the fusion of a sperm with an egg to produce a zygote, which eventually develops into an embryo. A: They both require different environmental factors to unite their sperm and egg. Pollen is often described in everyday language as plant sperm, but this is not the case! The main difference between pollination and fertilization is in the mechanisms of each of the two processes. Lab 4: Plant Diversity 1 (bryophytes and seedless vascular plants) - Biology 254 with Carr at California State University - Dominguez Hills - StudyBlue Favorite Answer. Animals produce motile sperm with a tail known as a flagellum, which are known as spermatozoa, while some red algae and fungi produce non-motile sperm cells, known as spermatia. Pollen is the male gametophyte in angiosperms and gymnosperms. Relevance. Pines have miniature gametophytes produced by reproductive cones. Bryophytes and seedless vascular plants have flagellated sperm cells that swim a few centimeters through a film of water to reach the egg cells within the archegonium. water is needed for bryophytes; Win is what unites sperm and egg in pines; 3 adaptive advantages of … Answer Save. The male gametophyte containing the generative cell splits into two sperm nuclei, one of which fuses with the egg, while the other degenerates. The pollen tube is grown allowing the sperm cell to reach the … Are the two life stages dependent on or independent from each other? 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