Which phylum is characterized by a hard, flexible exoskeleton and multiple life cycles?

Q: What advantages favored the evolution of tapeworms’ long, flat shape?

A: Tapeworm belongs to the Phylum Platyhelminthes commonly known as flatworms. The organisms belonging…

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: How did the diverse feeding appendages of arthropods arise?

A: There are some important features of Arthropods. Which are as follows: They are jointed appendages.…

Q: Why do sponges fit the definition of animals?

A: Animals are heterotrophic, are made up of cells, are devoid of cell wall in their cells

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: How is a hemocoel different from a true coelom?

A: Organisms with three primary germ layers are called triploblastic while the ones with only two…

Q: What is notochord?

A: Notochord is a rod that extends through the chordate organisms.

Q: How are wings and exoskeletons adaptive advantages in terms of the body structure of insects?

A: In this question, we have to mention the adaptive advantage of wings and exoskeleton in the insects.

Q: Explain the advantages and disadvantages of the arthropod exoskeleton.

A:

Q: Which other phylum of the animal kingdom present species with exoskeleton?

A: Exoskeleton is present on the outer surface of the body as a covering which provides the protection…

Q: How is arthropod reproduction characterized?

A: Arthropoda is the largest phylum of Animalia.  Defined by segmented body and paired jointed…

Q: What material is found in the skeleton of all sponges?

A: Sponges are members of the phylum Porifera. Sponges are a multicellular organism that has bodies…

Q: Concerning tissue complexity how different are cnidarians from poriferans?

A: Poriferans and Cnidarians are organisms belonging to the Animal Kingdom. Phylum Porifera are also…

Q: What characteristics is the ancestor of tetrapods thought to have had? Choose all that apply

A: Tetrapods  Tetrapods are the group of animals that have four legs. It the major group of animal and…

Q: What activities and body functions of arthropods require the most specialized appendages?

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

Q: Which of the following groups includes all of the others? a. Protostomes c. Eumetazoans b.…

A: Taxonomy is that the observe of distinguishing completely different organisms, classifying them into…

Q: What is a key characteristic of all arthropods?a. Six legsb. Pseudocoelomc. Mandiblesd. Exoskeleton

A: Arthropods are the largest phylum among animal kingdom. They are non chordates and do not contain…

Q: Define each of the following: tergum, sternum, telson, protopod, exopod, endopod, epipod, endite,…

A: Invertebrates are the animals that don’t have a bony skeleton or backbone. It means invertebrates…

Q: Which of the following is not characteristic of arthropods? (a) exoskeleton (b) pseudocoelom (c)…

A: Answer is b.) pseudocoelom.

Q: In the rainforest you discover a new species that is terrestrial, has determinate development, molts…

A: Introduction  Morphology is the study of physical characters which can be visualized either by naked…

Q: What are the reason that you can think of for the arthropods to constitute the largest group of…

A: Arthropods are the invertebrate animals that have a segmented body, paired jointed appendages, and…

Q: Where do invertebrates fit into the evolutionary history ofeukaryotes? Of animals?

A: Phylogeny is the branch of biology that studies phylogenetic analysis. A phylogenetic analysis is…

Q: which phylum of animals includes the parasitic tapeworm?

A: A phylum is a taxonomic group. It is a level higher than classes in taxonomic categories. This…

Q: The large central opening in the poriferan body is called the _____. a. emmule b. picule c. stia d.…

A: The term biodiversity refers to the diverse variety of life present on the earth. As biodiversity…

Q: What factors support the placement of phoronids and brachiopods as sister taxa?

A: The tree phyla-Phoronida, Ectoprocta, and Brachiopoda-possess a crown of ciliated tentacles, called…

Q: What is a key characteristic of all arthropods? a. Six legs c. Hydrostatic skeleton b. Pseudocoelom…

A: Arthropoda are invertebrate animals equipped with joint appendages. It is the largest phylum of…

Q: Do octopus and squids have exoskeleton?

A: An exoskeleton is an outer cover present on the body of an animal. In most of the animals it is made…

Q: How does the presence of exoskeleton explain the general small size of arthropods?

A: Arthropods are the invertebrates with characterized by the presence of jointed appendages and a hard…

Q: What phylum is considered to be the arthropod's closest relative? What major characteristics do…

A: Arthropods are invertebrates that have legs with joints. They account for around 75% of all animal…

Q: How does the lifestyle of a gastropod differ from that of a cephalopod?Identify adaptations that…

A: To describe: The way in which the lifestyle of a gastropod differs from that of a cephalopod.…

Q: What is the sister group to the Tetrapoda clade?

A: A sister group or sister taxon is a phylogenetic term denoting the closest relative(s) of another…

Q: Echinodermata is the first phylum you have examined whose members possess true endoskeletons. What…

A: Echinodermata are called after their spiny skin, and so this phylum has over 7,000 recognized living…

Q: The phylum Nematoda is protostome or Deuterostome ?

A: Phylum Nematode commonly referred to as roundworms or thread worms are aquatic or terrestrial,…

Q: Cephalopods are the only mollusks (with segmented bodies/have a mantle that secretes a shell/with a…

A: Mollusca are designated as the second-largest phylum of the animal kingdom after Arthropoda. They…

Q: The arthropods have a metameric body with segments organized into functional groups called

A: In this question, we have to answer a metameric  body with segments organised into functional groups…

Q: What type of exoskeleton do some molluscs present?

A: The mollusks are soft-bodied, marine invertebrate animals. These can be present on land or…

Q: earthworms and leeches belong to which phylum?

A: R.H. Whittaker grouped various organisms and proposed five kingdom classification namely: Protista,…

Q: What is the function of the feet in molluscs? How is the mollusc foot related to the name given to…

A: Phylum Mollusca is the second largest animal phylum which includes over 60,000 species. Molluscs…

Q: What advantages are associated with segmented bodies and appendages?

A: The term segmentation in biology means to duplicate the organs or body parts, like arms and legs.…

Q: How can the endoskeleton of echinoderms be characterized in comparison to analogous structures…

A:

Q: Which group of echinoderms has a biradial symmetry and tube feet all over its body?

A: Tube feet are one of the little adaptable or flexible cylindrical processes which present in the…

Q: What do fossil tetrapods tell us about the transition from water to land?

A: The animals that have 4 limbs are known as tetrapods and constitute the superclass Tetrapoda which…

Q: Which phylum is associated with a blind gut, complete digestive system, and simple choanocytes?

A: Phylum is a principal taxonomic category that ranks above class and below kingdom in the hierarchy.…

Q: What are benthoic animals?

A: The animals are eukaryotic and multicellular organisms.

Q: Do Cnidarians have a simple or complex body plan?

A: Cnidarians:These are the animals of phylum cnidaria. These are carnivores. These animals have the…

Q: Which clade does not include humans?(A) synapsids(B) lobe-fins(C) diapsids(D) osteichthyans

A: Clades are the group of organisms that are classified on their shared traits with their common…

Q: Which phylum of animals shows radial symmetry and has tentacles with stinging cells? Nematoda…

A: Based on the symmetry of the body, animals can be classified into three types, namely radial…

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.