This specimen is not a nematode because: O a. It has 2 layers of muscle. O b. It has a gut. C. It has a coelom. O d. It has a very thick cuticle. O e. It is not circular in cross-section. CLEAR MY CHOICE

Q: A pseudopodia, also known as a is used for O A. real foot; movement O B. real head; turning C. false…

A: Pseudopodia are arm-like projections from eukaryotic cell membranes. These projections are the…

Q: A defining feature of the Ecdysozoa is aa. segmented body.b. closed circulatory system.c. cuticle.d.…

A: The Ecdysozoa is a group of protostome animals that belong to the arthropod, Nematoda, and several…

Q: 1. Hemipteran's piercing and sucking mouthpart is a modified structure of mandibles and maxillae.…

A: 1. Hemipterans possess piercing-sucking mouthparts. Mouth part in form of segmented beak arising…

Q: JM. Cavanihac A 0.1 mm

A: Some animals go through metamorphosis to become an adult. A larva is a distinct juvenile form of…

Q: Feeding rosettes can be observed on the surface of the sediment and are formed by Group of answer…

A: It is a multiple choice question.

Q: Which of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata…

A: Chordate can be defined as the animal that will belong to the phylum Chordata. There is some period…

Q: Place the following life stages in order from youngest (1) to oldest (5).     glochidium in host…

A: Life stages These are defined as the different ages or stages one goes through in a normal lifetime.…

Q: What structure differentiates Ectoprocts and Brachiopods from other Lophotrochozoa?

A: The animals are multicellular eukaryotes with heterotrophic nutrition. The unicellular are protozoa,…

Q: Which group of flatworms are primarily external parasites of fish?a. monogeneansb. trematodesc.…

A: The flatworms are acoelomates that can be either parasitic or free-living. The free-living forms act…

Q: of these features is absent in Porifera? Select one: O a. Complete digestive tract O b. Circulatory…

A: Porifera is the phylum of most simple aquatic organisms. They are eukaryotic multicellular and made…

Q: Nematodes are acoelomate animals (True/False)

A: Acoelomate animals are those animals which have no coelom or body wall present in them. Thus a…

Q: We were shown this specimen in an invertebrate zoology class. What is it? The professor told us…

A: It sure does comes under mollusks but I believe that this is not a Bivalve but a Chaetoderm, which…

Q: If chaetognaths belong to Lophotrochozoa, they would be more closely related to animals like…

A: Chaetognaths are phylum of the predatory marine worms.

Q: Vertebrata Urochordata Chordata Cephalochordata Hemichordata |Ambulacraria Echinodermata Mollusca…

A: The phylogeny represents that how they taxons in the tree are related to each other.

Q: The larval stage of a cnidarian is known as a a. medusa. b. planula. c. polyp. d. cnidocyte.

A: Non-chordates are the life forms that do not have any backbone or notochord in their structure.…

Q: Nematodes once were thought to be closely related torotifers due to the presence of a pseudocoelom…

A: Nematodes:         Nematodes can be otherwise known as roundworms, which comes under the hood of…

Q: Flatworms (platyhelminthes) possess a a. metanephridial system  b. protonephridial system c.…

A: Platyhelminthes are flatworms having many classes of triploblastic and are acoelomate flatworms that…

Q: Which features are true of sea cucumbers? A. use the water vascular system to move on the seafloor…

A: Please follow step 2 for detailed explanation.

Q: A ciliated feeding structure in the larval stage is a characteristic of aa. trochozoan.b.…

A: The systematic classification of animals is necessary for the purposes of identification and…

Q: Why are flatworms called acoelomates

A: Flatworms belongs to the phylum Platyhelminthes. They are unsegmented, bilaterally symmetrical…

Q: Pictured is one of the life stages of an Aurelia sp., or Moon Jellyfish, a Scyphozoan. Which life…

A: Introduction cnidarian, also called coelenterate, is a phylum under the kingdom Animalia containing…

Q: What is the primary characteristic of the Ecdysozoa (Nematoda + Arthopoda)?

A: Answer: Ecdysozoa : These are the superphylum which includes arthopoda and nematoda , which have…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.