BSC2011L F2F, Exercise 9, Ecdysozoan Protostomes 12-23 (1)

Questions1. Does the hydra illustrate the polyp or the medusa stage?2. How many germ layers does the hydra contain?3. What type of symmetry is seen in the hydra?4. Can you find the hydra tentacles? How many tentacles does your hydra specimen contain?5. Name the stinging cells present on the tentacles that are unique to cnidarians.6.Explain the movement of the hydra if live specimens are available. 7. If there are live hydra specimens do not add the vinegar as indicated on the lab website. Vinegar causes them to expel the cnidocytes. 8. View the preserved cnidarian specimens will be on display. They may differ from the ones directly mentioned in the lab website but there should be some medusa cnidarians as well as corals and sea anemones. Please make observations on the available specimens.

EXERCISE 9: Introduction to the Animal Kingdom Part 2: Modes of Digestion and Respiration, and Rotifera, Platyhelminthes, Annelida, and Mollusca Pre-lab questions (due at the start of the lab period) 1. You will examine four different phyla this week. Which of these four are coelomates? Which of these four are pseudocoelomates? Which of these four are acoelomates? 2. Epithelial tissue can be found as six different types. Examine the table below and place an X in the cells box corresponding to the description(s). The first type has been done for you as an example. Square Tissue Type Single layer Multiple layers Thin/Flattened Elongated cells Simple cuboidal Stratified cuboidal Simple columnar Stratified columnar • Dratiets Punch Simple Squamous Stratified squamous X Cells X tead ka time sinal ice ho various body plans exhibited by members of the animal kingdom

Please answer I'll give a good rating

Clam I need help with the following questions about Clam When dissecting a clam, what functions of the parts are observed? What is the general feeding strategy of the clam, and how does the digestive system allow it to behave in that way? What is the nature of the circulatory system (open or closed) and is the clam acoelomate, pseudocoelomate, or true coelomate? How does the clam reproduce, obtain oxygen, and get rid of waste?

Answer 7-13

Please ? answer all questions

Name Class Date Skills Worksheet Directed Reading Section: Annelids pg.686-691 In the space provided, write the letter of the description that best matches each term. 1. segments a. primitive brain b. flap-shaped appendages c. an earthworm organ that grinds soil 2. cerebral ganglia 3. septa d. external bristles 4. gizzard e. series of repeated structures along the length of the body f. internal body walls that separate the segments of most annelids 5. setae 6. parapodia Read each question, and write your answer in the space provided. 7. How do nutrients and other materials pass between the segments of an annelid? 8. What organs are found in all the segments of an annelid? 9. Describe how signals are sent through an annelid's nervous system.

Questions 1. Describe the feeding process in Tetrahymena. What are the functions of the cilia? 2. What is the function of vacuoles? 3. What is the relationship between the number of vacuoles formed and time? 4. Write a testable question that can be answered experimentally using the India Ink method.

Question:- 4. Describe characteristics of the phylum Platyhelminthes and its subgroups by discussing similarities and differences of (i) morphological and anatomical features, (ii) life styles (e.g., how they acquire nutrients and where they live), and (iii) life cycles and modes of reproduction of “turbellarians,” trematodes, and cestodes.

please help me

anathomy and physiolygy 2nd edition Lab my question: Body cavities & serous membranes? thank you

PLEASE HELP!!

Please please answer both images attached quickly

Please help with these questions

2

Please help me with this assignement. Thank you

Answer 4 and 6

Answer the following questions: Give examples to support your answers. Elaborate your answer.. 1. Give one method  done by some country to save sea turtles. 2. Discuss why some sa that hemichordates are said to be the missing link between the invertebratesand vertebrates. 3. What is the importance of knowing the marine organisms residing and depending on the oceans? 4. Is there any relationship among fish lice, bird lice, and land mammals, except that they are lice? 5. Differentiate baleen  and toothed whales in four sentences. 6. How do marine organisms especially the animals found in the pelagic affects the populations of certain species in the ocean?

please help me answer problems #1-5. thank you!

REPORT SECTION Name: Day & Hours of Lab Section: SUBPHYLUM CRUSTACEA Describe the joint motion of the crayfish cheliped (first walking leg). Compare and contrast the range of motion to that of your own wrist. Describe how the leg structure of the crayfish is modified to compensate for the limited motion of a single joint. BSC20110 v. 20231 EXERCISE

Answer first three questions

sea star oral 3.The _________________ ___________________ is inverted and pushed into the shell of a bivalve when feeding.

please help me locate and label the parts for Saccoglossus kowalevskyi (Dolichoglossus). 2 photos is ok! thanks

Q24

Answer the last three questions

Hello, Please answer the following attached Biology question correctly and fully. Thanks!

Procedure 8: Echinodermata Echinoderms are a diverse group of marine organisms. The name means "spiny-skin" and is appropriate because the internal skeleton of the animals in this group has spines, called ossicles, that usually protrude through the skin.. Echinoderms have a unique water vascular system that includes a network of tubes that connect many hollow tube feet. Water flow is controlled by muscle contractions and directs the movement and feeding of these animals. 1. Observe the display of specimens at the counter and answer the questions below. a. Name five examples of animals that belong to this phylum. 1. 수 Table 13.2. Sea star. 2. 3. 4. b. What type of symmetry does this phylum exhibit? c. Observe a live starfish or sea urchin. Look for the tube feet. 1. Describe the location of the tube feet in your specimen. 2. Estimate the number of tube feet in each arm.

Please do asap

Answer the questions.

Review Questions Answer the review questions below. The phyla we viewed today were the porifera, the cnidaria, the nematoda and the arthropoda 1. Which phyla exhibited bilateral symmetry? 2. Which phyla had no true tissues? 3. Which phyla contained parasitic organisms? 4. Which phyla were coelomates? 5. Which phyla exhibited cephaliziation? 6. Which phyla that you viewed today contained specialized appendages? 7. Which phyla exhibited radial symmetry? 8. Which phyla were pseudocoelomates? 9. Which phyla had a complete digestive system? 10.Which phyla were multicellular? 11.Which phyla were asymmetrical? 12. Which phyla were acoelomates?

Answer questions 7 and 12

Please help me answer some of the parts of my homework. I've already answered some, but please change if you think it is wrong. Thank you!   Symmetry Tissue Type Germ Layers Body Cavity Circulatory System Embryonic Devt. Segmentation Annelida Bilateral Epithelium Triploblastic Coelom Closed circulatory system Trochophore Larva   Nematoda Bilateral Trichinella Triploblastic Pseudo coelomates       Mollusca Bilateral Mantle Triploblastic Coelom Open circulatory system Protosomes   Arthropoda Bilateral   Triploblastic Coelom Open circulatory system   Head, Thorax and Abdomen Porifera Have no body plan Do not have tissue Diploblastic Acoelomate       Cnidaria Radially Epidermis & Gastro dermis Diploblastic Acoelomate       Ctenophora Rotational Ectoderm & Endoderm Diploblastic Acoelomate       Chordata Bilateral Mesoderm…

I have highlighted the question I want answered

answer both to get a like.or don't attempt plz.Thanks ( Short explanation only).