- 1、本文档共4页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
- 5、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。
- 6、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
- 7、成为VIP后,您将拥有八大权益,权益包括:VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 8、VIP文档为合作方或网友上传,每下载1次, 网站将根据用户上传文档的质量评分、类型等,对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
Flatworms-ObservationofaLivePlanarian-FickelScience:一个生活的涡虫-斐寇尔科学生长观察.doc
Flatworms-Observation of a Live Planarian
Background:
Read the following article to find out information about planarian:
Article on the Planarian
Answer the questions at the end of the article and be approved before moving on.
Look up pictures of planarian. Insert at least 5 images of planarian that are from different perspectives and angles. (These will be used to help you find and capture your planarian)
Insert 2 images of labeled diagrams of the internal and external anatomy of planarian.
Materials
1 microscope
1 hand lends
1 pipette
1 concave microscope slide
1 cover slip
1 Petri dish with a cover
Procedure
Step 1 : Carefully begin to investigate where Planarian are in your ecosystem. Use the hand lens to help you find your specimen.
Step 2 Using your pipette to suck up the planarian, Hunt and Capture a specimen for Investigating Use your pipette, . If you have more than one, share.
Step 2: Place the planarian into a Petri dish with a small amount of water from the ecosystem.
Step 3: Describe where you found the Planarian: This is its habitat, or simply put, where it lives. They are often found gliding over the inside of the containers.
Step 4: Observe your worm, using a microscope and a hand lens. Sketch the planarian on a piece of paper. Label the eyespots. Label the anterior and posterior ends.? Take a picture and insert it below.
Step 5.? Measure your planarian.? This operation is best performd by removing some of the water from the dish and waiting for the worm to stretch out.?? Measure the length of the worm in millimeters.? (Always replace the water, you can use the dish lid to transfer water to and from the planarian environment.) Length of Planarian? _______
Step 6:Write your length on the board and when all the lengths are down, determine the average planarian size. ? Average??? ____________
Step 7:Observe the planarian for five minutes.
Does the planarian seem active or passive??
How does it move??
Does it swim or creep?
您可能关注的文档
- AEBA文说说测定电源的电动势和内阻的原理及其应用.doc
- AETOS--亏损能提高外汇交易的技能.doc
- Al3+-MXFX体系的紫外特性及莫西沙星的测定.doc
- Al3+-MXFX体系的紫外特性及莫西沙星的测定80055.doc
- AL9052M传输性能分析仪.doc
- ANALYSISOFRATEOFRETURN:回报率分析.doc
- Analyzeproductionpoliciesforsomevegetablecropsin…:分析了蔬菜作物生产政策….doc
- ANSYS一种结构瞬态分析实例42713.docx
- ANSYS结构分析指南p-方法结构静力分析.doc
- Apache优化管理.doc
文档评论(0)