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TEACHER NOTES AND ANSWERS Section 5.4 Binary fission: asexual reproduction of a single-celled organism by division into two roughly equal parts; may sketch a figure similar to the Visual Vocab on page148 Mitosis Budding: small projection grows on surface of parent and forms a new organism Fragmentation: parent organism splits into pieces that can each grow into a new organism Vegetative reproduction: modification of a stem or underground structure from the parent organism; new organism often remains connected Asexual reproduction: creation of genetically identical offspring from one parent organism; does not involve fusion of gametes Advantages to species: Can be more efficient if organisms well suited to environment. All organisms can potentially reproduce. Organisms do not need to spend resources finding or attracting a mate. Disadvantages to species: All organisms respond same way to environment. Organisms may lack adaptability to survive in changing conditions. © Houghton Mifflin Harcourt Publishing Company Holt McDougal Biology Cell Growth and Division Name: _____________________________ Class: __________________ Date: __________________ Section 4: Asexual Reproduction PowerNotes © Houghton Mifflin Harcourt Publishing Company Holt McDougal Biology Cell Growth and Division
