How many kinds of mesozoans exist and where would you search for them?

Q: When and how did sponges develop their skeletons?

A: The ancient sponge appeared about 2.5 millions years ago  the first animal . Coming in many sizes…

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: What are the types of reproduction presented by cnidarians?

A: Cniderians:  Cniderians comes under phylum anemalia, which contains both marine and fresh water…

Q: What are Roundworms ? What role do they play ?

A: The group of eukaryotic, multicellular, and heterotrophic organisms is classified under the kingdom…

Q: Describe a potential advantage and disadvantage of the cuticle of ecdysozoans.

A: Ecdysozoa belongs to the kingdom Animalia in which it belongs to the group of protostome animals…

Q: How do flatworms breathe?

A: The worm of a phylum includes the planarians that will together and the parasitic flukes and…

Q: To which of the following groups would a species that does not molt, possesses a coelom, and has a…

A: The process of molting refers to the method where one immature organism sheds hair, feathers,…

Q: Serial segmentation is a key characteristic of which of the following phyla? a. Mollusca b.…

A: The organisms of the ecosystem have significant properties. Depending upon the different features of…

Q: Why might a parasitic protozoan lack mitochondria?

A: Answer- Parasites are those organisms that totally depends upon the host organism for food and…

Q: What characteristic is common to the flatworms, molluscs, and annelids? a. All have bilateral…

A: Organisms with a single plane of symmetry are called bilaterally symmetrical. Organisms which lack a…

Q: If you were asked to choose one of the following invertebrate as a pet (protozoa, sponges, and…

A: Protozoans *protozoans are single celled eukaryotes that lives free living or parasitic means that…

Q: How similar are the morphological and physiological traits of the members of pancrustacea? Why are…

A: Comparative anatomy is the study of the "similarities and dissimilarities" between various objects.…

Q: Why do we still refer to a giant clam as a metazoan?

A: Protozoans are the unicellular primitive organisms and are eukaryotes. Some of them are free-living…

Q: Define about ecdysozoa ?

A: Animals were originally classified by using certain characteristics in their morphology and…

Q: What are Crustaceans ? define its features ?

A: Step 1 Arthropoda is a phylum of triploblastic, haemocoelomic, segmented invertebrates having head,…

Q: what are the different taxonomic classifications of protozoans

A: Introduction :- Protozoa are heterotrophic, unicellular eukaryotic organisms. They can either live…

Q: Do sponges appear to have any organs or organ systems?

A: Answer- Sponges are the most primitive type of animal in the whole kingdom.

Q: Distinguish acoelomate, pseudocoelomate, and coelomate.

A: The distinguishing features are  Coelomates have a body cavity , a true coelom which is inside the…

Q: How sponges are different from other animals ?

A: Sponges are members of the phylum Porifera which are stationary, channel taking care of marine or…

Q: Identify the characteristics unique to ecdysozoans.

A: Ecdysozoans are protostomes that include nematode worms and arthropods. Dunn et al in 2008 supported…

Q: Unifying features include shell, mantle, radula, foot, visceral mass Which classes show a loss of…

A: Mollusca is the  second largest phylum of the invertebrate animals.  Answer;1    The mollusk (or…

Q: Where are nematocysts located in the Anthozoans (subphylum Anthozoa)?

A: Anthozoa is a subphylum under phylum Cnidaria.It is a class of marine invertebrates which includes…

Q: Both poriferans and placozoans lack epithelial tissue connective tissue muscles nerves

A: Porifera are most primitive sessile metazoans. They are diploblastic multicellular organisms whose…

Q: Cnidarians are...

A: Ans. Cnidarians are diploblastic.  Option 2nd diploblastic is correct

Q: What is an example of a flagellated protozoan?

A: Protozoans are single-celled heterotrophic eukaryotic organism. They  belong to kingdom Protista.

Q: Are acoelomate flatworms basal bilaterians?

A: While classifying the animals based on their internal structures and external features, the presence…

Q: What characteristics distinguish Branchiopoda, Ostracoda, Copepoda, Thecostraca, and Malacostraca?

A: The phylum Arthropoda has ten sub-classes namely, a) Euchelicerata b) Chilopoda c) Diplopoda d)…

Q: The phylum Nematoda has which type of body cavity?

A: Nematodes are one of the defined phyla of the kingdom Animalia. It is otherwise known as roundworms.…

Q: What are poriferans?

A: Sponges have bodies in the form of tubular vases or globes open in the upper extremity. They have an…

Q: What are amoeboid protozoans?

A: Protozoa are free living, unicellular and microscopic organisms. The locomotary organs of protozoa…

Q: What are two features that put the octopus in the phylum Mollusca?

A: Mollusks are defined as a large group of invertebrates. They generally have soft body, also the…

Q: Why do some biologists think that the apicomplexans descended from dinoflagellates?

A: The finding of a nonphotosynthetic plastid in malaria and other apicomplexan pathogens has prompted…

Q: What characteristics of protozoa make them resemble animals?

A: Protozoa are unicellular organisms that have some traits with animal cells, such as the ability to…

Q: Why are all animals comprised of the clade metazoa?

A: Kingdom Animalia comprises the clade metazoan. Traditionally, the term metazoan has been used to…

Q: How is the biology of onychophorans related to their distribution?

A: Comparative anatomy is the study of the "similarities and dissimilarities" between various objects.…

Q: What is the following specimen? Our invertebrate zoology professor told us there is a bryozoan on…

A: It is a Bryozoa which is commonly called as Moss animal, they are also called as Ectoprocta and…

Q: Please complete the following (abbreviated) cladogram of Metazoa, labeling tips, nodes and…

A: Cladogram -- In olden days biologists grouped the organisms based solely on their physical…

Q: What makes molluscs different from other invertebrate phyla?

A: Introduction Molluscs:- Mollusca is the second-largest phylum of invertebrate animals after the…

Q: How does the excretory system of nematodes work?

A: Nematodes are the members of group eumetazoans characterized by bilateral symmetry and three germ…

Q: What is the cleavage pattern of Cnidarians?

A: Cnidarian, is also known as coelenterate is a member of the phylum Cnidaria (Coelenterata), These…

Q: What is the reason for saying that sponges are closely related to, and probably evolved from,…

A: Sponges, which belong to the phylum Porifera, are a sister group to the Diploblasts and are a…

Q: Which other invertebrate groups are likely to be the closest relatives of molluscs? What evidence…

A: Mollusca is the largest marine phylum of the animal kingdom that is characterized by a mantle with a…

Q: Three major phylogenetic groups of Bilateria are currently recognized: Ecdysozoa, Lophotrochozoa,…

A: Since the drastic reorganisation of the phylogeny of the animal kingdom into three major clades of…

Q: What are the different groups of crustaceans and what organisms are placed in each group?

A: Groups of crustaceans: There are over 50,000 known species of crustaceans divided into a number of…

Q: What larval type do Anthozoans have and what phylum are they in?

A: Anthozoans are marine invertebrates which comprises of: Sea anemones Stony corals Soft corals

Q: A NEOMENIOMORPHA CHAETODERMOMORPHA POLYPLACOPHORA MONOPLACOPHORA GASTROPODA B CEPHALOPODA SCAPHOPODA…

A: A cladogram is drawn to represent proposed evolutionary (phylogenetic) relationships between…

Q: What are some examples of cnidarians? In which environments can these animals be found?

A: Hydra, jellyfish, coral are the some examples of cnidarians. Presence of cnidoblast cell in their…

Classification of Marine Organisms

Classification is a way of categorizing organisms that enables an easy process of identification of such organisms. All living things are classified by grouping them under specific categories. The grouping is done based on the close relativeness of the organisms. The classification tool requires knowledge of characteristics, differences, and similarities between different organisms.