What we will do What we will learn 10N 15 Poutū-te-Rangi 2017 Quick quiz and preliminaries How to start well For a species, advantages and disadvantages of sexual and asexual repro Why most living things reproduce sexually Examine how both sexes make and contribute the GAMETES: 4623 23rd pair: XX or XY and unfairness. Labelled parts again – in more detail What a gamete is, how both sexes make them and how they unite. If time, some HRT on the HW books How to make great use of time.
10N – Seating Plan Front of lab - Whiteboard
HW item Skills practiced HW booklet pages on skeletal system, muscles and joints, blood and heart, circulatory system Pages 1 - 8 Due Thursday 2nd of March 2017 Time management Knowledge of three systems in the body HW booklet pages 9 – 18: circulatory, breathing and digestive systems. Due Monday 20th of March 2017
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Advantages and Disadvantages of Asexual Reproduction ADVANTAGES Asexual reproduction is the production of the next generation but only using one parent. Examples include: plant cuttings, plant “suckers”, stick insects and aphids (some generations only) Advantages and Disadvantages of Asexual Reproduction ADVANTAGES DISADVANTAGES It is a very efficient way of making lots of the next generation ALL the identical organisms are vulnerable to the same diseases as each other It only requires one parent – this is easier if the species is solitary – e.g. tiger Sexual Reproduction is the production of the next generation using genetic mixing from two parents. Advantages and Disadvantages of Sexual Reproduction ADVANTAGES DISADVANTAGES VARIATION: Every individual is a little bit different from the others. This makes it harder to wipe out a whole species It uses lots more resources: food, energy, time Jonathan and Cody think it is more pleasureable! It needs two parents. This is difficult for some species: e.g. Angler Fish