Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Asexual Reproduction
Document related concepts
Transcript
Reproduction & Cell Division Review Asexual Reproduction Sexual Reproduction Forms of Asexual Reproduction Binary Fission - one cell splits into 2 identical cells Budding – splitting unevenly, small “bud” Regeneration – re-growing parts Starfish, planaria Vegetative reproduction – Plants growing from cuttings, runners, bulbs Cell Division Mitosis - cell division that makes two identical daughter cells If an organism has 24 chromosomes, each new cell will also have 24 chromosomes. The new cells are called daughter cells and are identical to the original cell. It happens in every cell and makes body cells with same # of chromosomes It happens for growth and repair Meiosis – cell division that makes sex cells (egg or sperm) ONLY makes sex cells with ½ # of chromosomes Mitosis Meiosis Sexual Reproduction – two parents causes variation among a species Fertilization – when egg and sperm join to make one body cell (zygote) zygote – the first body cell of an organism (a fertilized egg) zygote Flowering Plant Label the parts: anther, filament, stigma, style, ovary, sepal, petal The male parts are in the _____________________. The female parts are in the ____________________. The pollen must reach the egg for fertilization to take place. This is ______________________ reproduction in a plant. 1. .If an organism reproduces asexually, its offspring will most likely be A. genetically different from each other B. produced from specialized cells known as gametes C. genetically identical to the parent D. produced as a result of fertilization 2. The diagram shows yeast reproducing. This type of ____ reproduction is called ____. A. sexual – binary fission B. sexual – budding C. asexual – binary fission D. asexual – budding 3. Which lists the structures from largest to smallest? A. chromosome – gene – cell – nucleus B. cell – nucleus – chromosome – gene C. gene – chromosome – nucleus – cell D. nucleus – cell – gene – chromosome 4. A female fish produces sex cells called A. zygotes B. sperm C. eggs 5. If the bird’s sperm contains 40 chromosomes, how many chromosomes are in each of the bird’s body cells? A. 46 B. 40 C. 20 D. 80 6. When an amoeba reproduces, it is completing _________________ reproduction called _______________________. A. B. C. D. Sexual – regeneration Sexual – budding Asexual – binary fission Asexual - budding
