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q what are the main bryophyte groupsthe major bryophyte groups are the mosses the hornworts and the
q what are the major characteristics of the bryophytesbryophytes are nonvascular plants that is they do not have conductive tissues and they perform
q do plants present only sexual reproductionthere are asexual forms of reproduction in plants few naturally detached pieces of root leaves or limbs
q for each of the three kinds of life cycles what is the respective ploidy of the individual that represents the adult or lasting formin the
q why is the plant life cycle known as alternation of generationsthe plant life cycle is called as alternation of generations because in this cycle
q are gametes always made by meiosisin the haplontic haplobiontic life cycle and in the plant life cycle diplobiontic life cycle gametes are made by
q what respectively are zygotic gametic meiosis meiosis and sporic meiosiszygotic meiosis is the one that occurs in the haplontic haplobiontic life
q what are the three fundamental sexual life cycles studied in biology which of them corresponds to metagenesis which of them is the human life
q what are the two divisions of the angiospermsthe angiosperms are divided into dicotyledonous and
q what is the difference between phanerogamic and cryptogamic plantscryptogamic hidden sex organs plants are those that do not present seeds or
q what are the four major groups into which the study of the plants is dividedin botany the plant kingdom is divided into pteridophytes bryophytes
q what is the difference between tracheophytes and bryophytesbryophytes are nonvascular plants liverworts mosses hornworts that is they do not have a
q what are the subkingdoms into which the plant kingdom is dividedthe kingdom plantae is divided into two big subkingdoms the tracheophytes and the
q do plants have tissue organization and specialized organsplants have specialized organs like roots limbs reproductive organs leaves and
q how different are animal cells from plant cellswhile plant cells are eukaryotic photosynthetic autotrophic and have chloroplasts and cell wall the
q what are the major cellular features of the beings of the plant kingdomthe typical plant cells are eukaryotic have nucleus photosynthetic use light
q what is the function of the umbilical cordthe umbilical cord is a set of blood vessels that connects the fetus with the placenta and in the fetus
q what are the endocrine functions of the placentathe placenta has endocrine function since it secretes the hormones estrogen and progesterone that
q is there an exchange of cells between the mother and the fetus through the placentaunder usual conditions there is no passage of cells across the
q what are the major substances transferred from the mother to the fetus through the placenta and from the fetus to the motherfrom the mother to the
q in which kind of animals does the placenta exist what is its major functiontrue placenta is present in placental mammalsthe placenta is formed from
q what is the chorioallantois membrane present in the embryonic development of birds and reptiles how does this membrane participate in the energetic
q why can the amnion also be considered an adaptation to terrestrial lifethe amnion is as well an adaptation to dry land since one of its functions
q what is the difference between amnion and chorionamnion is the membrane that covers the embryo and chorion is the membrane that covers the amnion
q why can the allantois be considered an adaptation to terrestrial lifethe allantois is an adaptation to dry land because in embryos of oviparous