Larval development is common among marine crustaceans but very rare among freshwater ones. Can you hypothesize why?

Q: Explain the difference between a Coelom and a pseudocoelom.

A: Introduction :- Animals are divided into different phylums , classess and families , on the basis of…

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: Peramorphosis can occur when a feature, such as horns, _in a descendent than in its ancestor.

A: Heterochrony is the difference in time or pace of development as compared to an ancestor. Because…

Q: Which is more widespread, nematodes or annelids

A: Nematodes are most numerous of any phylum . About 15000 species of nematodes are present .  Due to…

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: 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: Describe two types of canal system for sponges including a class representative for each system

A: The canal system is a distinguishing feature of all sponges. It is the perforation of the body…

Q: Which is not a characteristic feature of sea stars?a. coelomb. eyespotc. skin gillsd. tracheae. tube…

A: Introduction  Echinoderm is the phylum contains non-chordate invertebrate animals. They have spiny…

Q: Flatworms can reach a maximum size of around 40cm. Whilst this is big for a worm, there are…

A: Introduction Flatworms or Platyhelminthes are acoelomate, bilaterally symmetrical, soft bodies…

Q: Use phylogeny 27.6 (Animal phylogeny) to answer this question. What best describes frogs in terms of…

A: Considering the phylogeny of the frogs, they can be categorised as the following as mentioned in…

Q: Explain how a shelled egg allows reproduction on land.

A: Answer- Class- Reptilia, Aves and exceptional mammals have shelled eggs and comes under oviparous…

Q: Stalked jellyfishes" belong to which class?    A. Staurozoa B. Scyphozoa C. Anthozoa D.Hydrozoa E.…

A: Stalked Jellyfishes are the sole living members of Class Staurozoa.

Q: Which group of flatworms are primarily ectoparasites of fish? a. monogeneans b. trematodes c.…

A: The flatworms come under Phylum Platyhelminthes and comprise a very diverse group of worms.  The…

Q: Which statement about crustaceans is true? There are very few marine species. They lack a carapace.…

A: 5 kingdom classifications is a type of classification in which living organisms are classified into…

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: Explain the term used for Mollusc with a broad, flat foot for crawling ?

A: Molluscs are considered the second species-rich phylum in the world followed by the arthropods. This…

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: Why do insects exist is an intriguing conundrum. So how did the insect get inside? Please provide…

A: Insects are immensely diverse and numerous organisms that are essential to ecosystems all around the…

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 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: Why are robber crabs land invertebrates?

A: Robber crab which is also known as coconut crab, scientific name Birgus latro , it is a species of…

Q: Why are horseshoe crabs not crabs (or crustaceans)?

A: Crustaceans are essential for a group, or taxon, classified as arthropods. The fundamental passing…

Q: Use examples to explain how the external morphology of cephalopods has changed over evolutionary…

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

Q: Explain how each molluscan feature is modified, compared to gastropod and bivalve body plans. 1)…

A: Cephalopods, Gastropods and Bivalvia are all classes of Molluscs. They differ in their habitats. For…

Q: Which group within kingdom Protista probably gave rise to sponges? On what evidence do you base your…

A: Protists are eukaryotic organisms belonging to the kingdom Protista. Protists do not share any…

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: Cnidarians development will continue to include the stage. --- Gastrula Zygote Blastula Gamete

A: Cnidarians are also commonly known as coelenterates. They are a phylum under Kingdom Animalia that…

Q: Suppose you watch a video showing the development of an unknown animal. What clues can the…

A: Animals can be classified based on morphological characteristics (traits that can be observed after…

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: 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: Which group of echinoderms usually posses pentameric antimeres but some species may have more? A.…

A: Echinodermate's term was coined by J. Klein. These are exclusively marine organisms falling in the…

Q: Which is not true about Cnidarians? A1. Some cnidarians go through polyp stages and medusa stages A.…

A: Cnidarians are invertebrates such as jellyfish and corals, belongs to the phylum Cnidaria. All…

Q: How does the body plan of mesozoans relate to their parasitic behavior?

A: Phylum mesozoans include small worm like organisms which are parasite on marine inverteberates…

Q: Why do very few animals eat sponges?

A: Sponges, the individuals of the phylum Porifera, are a basal animal clade as a sister of the…

Q: Which of the following is NOT a characteristic of annelids?   A.they have a closed circulatory…

A: THE animals that belong to phylum annelida are called anellids  or called segmented worms . , they…

Q: Match the organism to their body symmetry * sponges A. asymmetrical + earthworm B. bilateral *…

A: Body symmetry means that in how many equal parts an organism can be divided. If an organism is…

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.