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LIFE! - Coggle Diagram
LIFE!
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Reproductive Strategies
Asexual reproduction
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Forms
Fragmentation
The body of the parent breaks (fragments) into two or more pieces, with each piece having the ability to generate the missing parts and form a new genetically identical individual. The original parent is lost in the process.
Vegetative Propagation
A new, genetically identical plant is formed from a piece of root, stem, or leaves from the parent plant. The parent plant is usually preserved in the process.
The plant will have little seedlings (almost like seeds, but there is no seed), that grow from it's main body and into a new plant
These new plants do not grow from seeds, but instead originate from modified stems that run underground. They are called RHIZOMES! There are also other modified stems such as strawberry stolon's that run above ground.
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Budding
Mitotic division results in an outgrowth or ‘bud’ on the side of the parent body. The bud continues to grow in size, and eventually separates from the parent. The new individual is genetically identical to the parent, and the parent is preserved.
Spores
Spores are reproductive cells that contain identical genetic information to the parent. These sporangia have tough outer cases to protect the genetic material inside. Once released, a sporangium will grow into a new organism if the conditions it lands in are favourable. The parent is preserved in this process.
Binary Fission
The parent cell undergoes cell division to create two new genetically identical individuals. The original parent is lost in the process.
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Sexual reproduction
In this form of reproduction, individuals are produced from the fusion of two sex cells or gametes
In this type of reproduction, the reproduced offspring ARENT gentically identical to one of the sources, instead from both
Even if 2 offspring have the same parents, they will have differences. This is due to the process of meiosis from which the gametes is formed.
Both sex cells with have a 'haploid' (Single set) amount of chromosomes. When the gametes fuse together, they create a 'zygote' with a diploid (Both sets of chromosomes from both parents) amount of chromosomes.
Without all of these chromosomes, the zygote will not have a complete set of instructions to complete the organism
Ex. In humans, both female and male sex cells have (haploid) 23 chromosomes, when fused together, the zygote has (diploid) 46 chromosomes
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The Variety of Life
Taxonomy
The science of naming, describing and classifying life on earth.
Taxon
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Domain
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Kingdom
Genus
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Species
A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
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Tree of life
Another system of classifying animals, helps with showing genetic/ancestorial relationships between organism
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Example: