23a Prelab 23 Echinoderms and Invertebrate Chordates

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.

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 answer all three questions in the photo. Be detailed and accurate. Don’t use previous answers or versions. Do this completely and correctly please.

Please answer I'll give a good rating

sea star  The _____________________________ groove contains tube feet.

Answer the review questions below. The phyla viewed were the platyhelminthes, mollusca, and annelida. 1. Which phyla exhibited bilateral symmetry? 2. Which phyla contained parasitic organisms? 3. Which phyla were coelomates? 4. Which phyla exhibited cephalization? 5. Which phyla that you viewed today contained specialized appendages? 6. Which phyla were aceolomates? 7. Which phyla had an incomplete digestive system? 8. Which phyla contained a shell? 9. Which phyla contained hermaphrodite organisms?

Answer 7-13

sea star oral 5.The ____________ __________________ is a circular tube that connects to each of the radial canals of each arm.

Please help with these questions

Answer questions 7 and 12

match a word with the definition Atria, Cuticle, Pseudocoelom, Exoskeleton, Ecdysis, Malpighian tubes, Gastropods, Incurrent siphon, Crop, Gizzard, Septa, Protostomes, Deuterostomes, Pentaradial symmetry, Water vascular system, Myomeres, Swim bladder, Ventricle, Endoskeleton, Notochord   _______________An excretory organ for eliminating metabolic waste found in insects. _______________Thin-walled part of the heart that receives blood from the body. _______________Thin walled tube where food is temporarily stored. _______________Thick wall chamber where soil is ground up and useable organic substances are separated from waste. _______________Extendable fleshy tube that transports water into the body.

match a word with the definition Atria, Cuticle, Pseudocoelom, Exoskeleton, Ecdysis, Malpighian tubes, Gastropods, Incurrent siphon, Crop, Gizzard, Septa, Protostomes, Deuterostomes, Pentaradial symmetry, Water vascular system, Myomeres, Swim bladder, Ventricle, Endoskeleton, Notochord _______________Thin Fleshy partitions between segments. _______________A skin covered skeleton composed of Calcium. _______________This system uses seawater to generate hydraulic pressure to power their tube feet for locomotion. _______________A short, rigid rod located between the dorsal hollow nerve tube and the digestive tract. _______________Provides muscular movements for swimming or burrowing. ______________Organisms which exhibit determinate development, and spiral cleavage. ______________Organisms which exhibit indeterminate development, and radial cleavage. ______________ Organ that gives buoyancy to bony fish. ______________ Thick walled part of the heart that pumps blood to the body.…

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.

Topic: Anthoceros: Development of Sporophyte Question: What happens during the active segmentation stage of zygote?

please label with the word bank.

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.

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.

Hello, good day. I have a problem answering this question, and I need your help. Hoping for a response, and thank you so much. Instruction: The answer must be in a minimum of 2 paragraphs, and each paragraph must have a minimum of 4 sentences.  Question:  Describe the features or characteristics that would differentiate Aedes aegypti and Aedes albopictus larvae.

Q12: what are 3 correct answer options. There's 3 correct answer please answer all correct answer options

Give typing answer with explanation and conclusion

Please do asap

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?

Using the the Figure attached, please answer these questions1.a. define filopodia 1.b. define contact sites  1.c. indicate where there are induced filopodia on the cells in A, B, C and D; (draw a circle around them or add an arrow to indicate their location; DO NOT CIRCLE THE ENTIRE CELL)1.d. name the cell types (name of the cell line) used in A, B, C and D 1.e. what kind of microscopy was used to capture these images?

Topic: Earthworms 1. What is the function of the setae? 2. What is the function of the openings at segment number 14?

Kindly refer to the photo attached. thank you so much.

Why is a blood vascular system necessary in animals with partitioned coeloms?________________________________.

Instructions: Do not copy in Google  Plese answer all, they are connected to the questions 1. Identify the basic characteristics and specialized features exclusive for each phylum of invertebrates. Porifera Cnidaria Ctenophora

Please complete the table and using the characteristics in the table, complete the cladogram. Thank you very much!

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…

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?

QUESTION 13:  Define the following terms as they apply to Platyhelminthes:   Eyespots:   gastrovascular cavity:

Question:- 1.How is morphology related to food collection in protobranch and lamellibranch subclasses of bivalves?

Explain your answer atleast 1 to 2 paragraphs. 2. Salamanders can regenerate limbs, but only under certain conditions. a) What is the effect of denervation on regeneration of a salamander limb? b) What is the role of the nerve supply?

i need only correct answers, ASAP  only correct answer, i will upvote