Flatworms (phylum platyhelminthes) Procedure 1. Observe the live planaria, if present, under the dissecting. If there are no live specimens, view this video: https://www.youtube.com/watch?v=w0QzSYQGsnA a. What type of symmetry does the planaria display? b. Does the planaria exhibit cephalization? c. Can you locate the planaria eyespots? What do the eyespots sense? 2. View the large planaria model. Make sure you can identify the pharynx, the eyespots, and the flame cells. a. Does the planaria have a complete or incomplete digestive system? b. What is the function of the flame cell? c. Are planaria hermaphrodites? d. Scientists say planaria have ladder like organs. Why?

Flatworms (phylum platyhelminthes) Procedure 1. Observe the live planaria, if present, under the dissecting. If there are no live specimens, view this video: https://www.youtube.com/watch?v=w0QzSYQGsnA a. What type of symmetry does the planaria display? b. Does the planaria exhibit cephalization? c. Can you locate the planaria eyespots? What do the eyespots sense? 2. View the large planaria model. Make sure you can identify the pharynx, the eyespots, and the flame cells. a. Does the planaria have a complete or incomplete digestive system? b. What is the function of the flame cell? c. Are planaria hermaphrodites? d. Scientists say planaria have ladder like organs. Why?

An Illustrated Guide To Vet Med Term

4th Edition

ISBN:9781305465763

Author:ROMICH

Publisher:ROMICH

Chapter12: 1+1=3 (or More)

Section: Chapter Questions

Problem 17MC

See similar textbooks

Similar questions

Annelida Procedure View the earthworm model. Make sure you can identify the setae and the clitellum. 1. What type of symmetry does the earthworm display? 2. Does the earthworm exhibit cephalization? 3. Does the earthworm exhibit segmentation?
The picture below is a prepared slide of Fucus receptacle cross section. (40x) Make a sketch of this organism and using your Photo Atlas or online resources, label conceptacle, oogonia, antheridia, paraphyses (sterile hairs) cortex cells, medulla cells. Upload your sketch here. Edit View Insert Format Tools Table 12pt v Paragraph v |BIUA
kindly label the sea urchin's ovary as to what CELL/S is being pointed at. Please make sure that the answer is a cella. b.c.
Label the grasshopper testis under microscope
Part B. Please turn in typewritten answers to the following questions 1. Asexual reproduction in diatoms occurs when the two valves move slightly apart and the cell divides in a plane parallel to the valves. A new valve is formed which nests within the parent valve. What happens to the average cell size in a population of diatoms reproducing in this manner? How has diatom life history evolved to resolve this issue of changing cell size? Explain. 2. Many benthic invertebrates produce planktonic larvae. Please provide a rationale for a meroplanktonic lifestyle. That is, what are the putative advantages of spending only part of the life cycle in the plankton? 3. Many species of zooplankton will undergo daily vertical migrations, spending the daylight hours lower in the water column and the evening hours closer to the surface. Please speculate as to why so many species display this common behavior.
Experimental Planaria #1 Cut in half inte front (anterior) and rear (posterior) Day t Measuring the Planaria This operation is best performed by removing some of the water from the dish into the lid with a clean pipette and waiting for the worm to stretch out. Measure the length of the worm in millimeters. (Aways replace the water right away, you can use the dish lid to transfer water to and from the pianaran environment.) A. Record the length of the front (anterior) section jusAFTED you cut. This is your INITIAL front length: 5m 6) B. Record the length of the rear (posterior) section just AF TERGU cut. This is your INITIAL rear length: mro C. Observe and record any behavioral responses just after your cut Day 2 Spend time under the microscope observing the cut Planaria. Answer the following questions based on your observations. NO measurements will be taken on this daL. a) Are the cut fragments showing signs of regeneration? b) How did you identify the regenerating portion? What color…
Label the monkey testis under microscope
Test II. Comparing Characteristics. Given the groupings of phyla, please indicate within the prescribe column whether these characteristics belongs to the group. Indicate your answer by writing Y if a characteristic and N if a non-characteristics. If the characteristic is not true to all members of the phylum, then write NY. Characteristics PORIFERA CNIDARIA PLATYHELMIN THES NEMATHELMIN THES MOLLUSCA bilateral symmetry sexual reproduction Characteristics ANNELIDA ARTHROPODA ECHINODERMATA CHORDATA bilateral symmetry sexual reproduction
Please answer fast "The cuticle and its profound effect on the organisation and functioning of the insect body". Explain and discuss this statement with examples.
Match the insect parts or modification with their corresponding similarity Elytra Pterostigma Raptorial Fossorial Exopterygote Endopterygote Vas deferens Spermatheca Natatorial Dorsoventrally flattened Choose... Choose... Beetle legs Holometaboulous insects Mole cricket fore legs Hemimetabolous insects Cockroaches characteristic Dragon fly wing Water bug legs Diptera hindwing Female reproductive organ Weevil forewing Wingless insects Mantids fore le Prey mantids foreleg Male reproductive organ Earwig characteristic
true/false 1. Siphonaptera has a laterally flattened body. 2. Sawflies have crochets on their prolegs. 3. Spruce Beetle (Dendroctonus rufipennis) is generally attracted to weakened or recently dead trees, and carries blue stain fungi. 4. Geometridae larvae have only 2 or 3 pairs of prolegs.
Label the frog testis under microscope