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Science:Biodiversity
Alberta grade 9 curriculum
Question | Answer |
---|---|
What is Extirpation? | When a species goes extinct in a certain area. |
What is Extinction? | When a species is completely wiped out and there are none of them left anywhere. |
What is biological diversity? | Variety of life on earth. |
What is a species? | A group of organisms that consist of similar individuals capable of interbreeding. |
What is species diversity? | The number of different species in a given area. |
What is Habitat diversity? | The amount of different habitats in a region. |
What is a niche? | An specific organisms specialty within its community. |
What is a population? | The number of organisms of the same species that live in a particular area at the same time. |
What is asexual reproduction? | Reproduction with only one parent. |
What is sexual reproduction? | Reproduction requiring two parents. |
What is inheritance? | When an organism gets a genetic trait passed down to them by previous generations. |
What are chromosomes? | Threadlike structures of nuclei acids and proteins found in the nucleus of most cells, carrying genetic information. |
What are genes? | The parts of a chromosome. |
What is DNA? | The main part of a chromosome. |
What is cell division? | When a cell produces two more cells (duplicates) of the same genetics. |
What is binary fission? | When a cell duplicates it’s DNA to make copies of itself. |
What is natural selection? | When organisms better fitted to the environment survive and reproduce and the organisms not as well suited die off, creating specific traits within a species. (survival of the fittest) |
What is artificial selection? | When humans pick animals or plants with certain traits and make them reproduce to refine said traits. (eg. breeds of horses) |
What is a symbiotic relationship? | Any type of long-term interaction between two organisms. |
What is mutualism? | When both organisms benefit. |
What is commensalism? | When one species benefits and the other is not affected. |
What is parasitism? | When one species benefits and the other is harmed. |
What are 5 ways plants can reproduce? | Seeds, Budding, Runners, Cuttings, Bulbs, or Suckering. |
What is a zygote? | When two gametes come together it forms a zygote. |
What is an embryo? | An unborn offspring that is in the process of developing (comes after zygote) |
What is a gamete? | A singular sex cell that can come together with another gamete of opposite sex to form a zygote. |
What is a dominant gene? | An allele in one gene that masks and overpowers the second allele in the gene. It is Physically visible. |
What is a recessive gene? | An allele that is masked by the dominant gene and therefore not physically visible. However that recessive gene can be seen in offspring sometimes. |
What is mitosis? | A type of cell division that results in two daughter cells that are both exact copies of the parent. (example: bacteria) |
What is meiosis? | A type of cell division where four daughter cells are born, but each has only half of the parents genes. (example: gametes) |