Biology exam notes: Units on reproduction in plants and animals (sexual & assexual), mitosis & meiosis, growth and cell division

BIOLOGY TERM 3 Reproduction Asexual echo ·leads to the production of offspring that are very bid their farms and so carry on adaptations to the conditions they live in. ·Does not be on the production of peculiar(prenominal)ised reproductive cells (gametes) ·Does not numerate on the encounter meeting of spermatozoon and egg, eg. Aquatic species draw their gametes into the pissing. ·Does not expect on two mature one-on-ones, nonpareil to produce sperm and the other to produce eggs, coming in concert at an appropriate time for the transfer of sperm. Fission ·of a single-celled organism is the simplest type of replica. ·A cell divides across a midsection to smorgasbord two equal daughter cells. Eg. some bacteria and some unicellular alga and fungi. Budding ·A baseborn differentiate, including a nucleus produced by mitosis, pushes out from the parent cell and breaks off. ·Occurs in yeasts. Spores ·Are the reproductive cells of single-celled and multicel lular algae and fungi. ·The spores of aquatic fungi and algae swim by water by using their long whip wish well flagella. · Currents of bloodline disperse microscopic spores of terrestrial algae and fungi. When a spore reaches a favourable environment it germinates and develops into a new organism.

fragmentation and Regeneration ·Fragmentation (the open frame off of split of the parent body) followed by regeneration (the return of detached part into a new individual) is a form of asexual procreation that occurs in some multicellular organisms. ·A many celled organise that is capable of growing into a a ll new individual detaches from the parent, ! either by a special mechanism or by accident. ·Quite frequently atomisation is a burden of damage. ·Repair after fragmentation prat become reproduction in organisms such as sea star and earthworms. Eg. extension phone of plants. Parthenogenesis ·is the development of an unfertilised egg into an embryo. Eg. Plants, honey... If you want to commove a full essay, order it on our website: OrderCustomPaper.com

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