Which statement about crustaceans is true? There are very few marine species. They lack a carapace. Most have six legs attached to the head. They are the least prevalent marine arthropods today. Most have a body that is composed of three regions: head, thorax, and abdomen.

Q: Explain the  advantage of a digestive system with two openings have relative to digestive systems…

A: The digestive systems that is usually been define that the annelids have two openings as opposed to…

Q: What animals are protostomes? Select all that apply. Chordates Mollusks Flatworms Arthropods…

A: Protostomes are animals in which mouth is formed before its anus during embryonic development.…

Q: A)gills  B) jaws C)pharyngeal slits D)vertebrae E)lavar stage

A: A phylogenetic tree often called a phylogeny is a diagrammatic representation that shows how various…

Q: Which group of invertebrates is most closely related to vertebrates? A. molluscs B.…

A: Mollusca This is the second largest animal phylum. Are terrestrial and aquatic having an organ…

Q: Which species rests on the tips of two pelvic fins and elaborate tall fin as it sets on the…

A:

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: List two ways that crustaceans are adapted to an aquaticlife and insects are adapted to living on…

A: Crustaceans has a place with arthopoda and have a hard exoskeleton,which is made out of calcium…

Q: Refer to the diagram above. What characteristic is shared by amphibians, birds, reptiles, and…

A: Today biologists agree with what Darwin said that all animals have evolved from one common ancestor…

Q: Which of the following has a complete digestive system? a. tapeworms c. cnidarians b. sponges d.…

A: Digestive system is one of the systems in the body which carries out digestion. Digestion is the…

Q: A dichotomous key to the classes of Subphylum Vertebrata 1 with fins 1' without fins 2 with jaws 2'…

A: The scientific tool that identifies organisms based on observable traits is called a dichotomous…

Q: Which of the following is the correct classification for the following chordate animal: This animal…

A: Fishes  Fishes are aquatic Gill bearing animal belonging to the phylum chordata and sub phylum…

Q: Squamata includes _____. a. crocodiles and alligators b. turtles c. tuataras d. lizards and snakes

A: Characteristics of Reptiles: Reptiles are tetrapod vertebrates ( having vertebral column) , they are…

Q: The Phyla that first developed a complete digestive system Sponges Mollusks Cnidarians Ribbon…

A: The phylum is a level of taxonomic rank above class and below kingdom. Porifera-sponges.…

Q: A rise in atmospheric carbon dioxide increases ocean acidity, making it harder for animals to build…

A: Many marine invertebrates depend on equilibrated chemical conditions and pH levels in the ocean to…

Q: Animals that have a coelom; Are animals that lack a body cavity Are animals that lack a complete…

A: Answer) Animals that have a coelom are animals that have a true body cavity. Coelom: It is the…

Q: The first group of animals to develop organs and organ system are

A: Organ systems Organ systems can be defined as collection of organs or group of organs that perform…

Q: Drawing animal body plans to compare features: Draw a cross-sectional diagram comparing the animals…

A: Flatworm or Acoelomate are the animal without body cavity, they involve ectoderm,mesoderm, endoderm…

Q: A coelom is a body cavity completely lined with (a) epithelium (b) ectoderm (c) mesoderm (d)…

A: In human beings, there are three embryonic germ layers that are responsible for the development of…

Q: Which statement about protostomes is true? O They are radially symmetrical. They have a complete…

A: The group of eukaryotic organisms that are heterotrophic and multicellular is called animals. There…

Q: Which invertebrate phylum includes the most species?a. mollusks c. arthropodsb. roundworms d.…

A:

Q: the five classes of vertebrates  are

A: Vertebrates can be defined as the type of organisms which consists of the spinal cord protected by…

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…

Q: leeches are used in medical fields

A: Leeches: Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea…

Q: Give examples of each of the following animal phyla: mollusks annelids arthropods chordates

A: Phylum is the second highest taxonomic after Kingdom. Large number of organisms sharing one or more…

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: Which group of invertebrates is most closely related to vertebrates? a. cephalochordates b.…

A: The phylum chordate contains subphylum vertebrata and invertebrates. In invertebrates, there will be…

Q: ILLUSTRATE THIS/ Mollusks are divided into three classes: Class Cephaloda (squids), Class…

A: Mollusks are the soft-bodied invertebrates and are abundant species belonging to the phylum…

Q: Porifera v [ Choose ] tetraneury, chambered heart stomochord, pharyngeal gills aquiferous system…

A: Porifera : Are a group of animals also known as sponges, as they have pores on their body which…

Q: Which is INCORRECT about sea urchins? A. Spines are movable B. Secondary spine is shorter a d solid…

A: Sea Urchins are echinoderms having a spiny outer structure.  They move with the help of tube feet…

Q: Select all statements that are true about the Kingdom Animalia I. Animals are multicellular and…

A: Given:  Statements that are true about the Kingdom Animalia.

Q: Earthworms intestine extends from the gizzard to the anus. Does the digestive system show…

A: An earthworm is a type of invertebrate that belongs to the Annelida phylum. They live in the soil…

Q: "Simple" animals are distinguished from more "complex" animals by their presence of hair and mammary…

A: There are many different kinds of animals which may be single celled Or multicelled. These animals…

Q: The largest group of vertebrates would De the birds. mammals. osteichthyans. insects. DO00

A: Vertebrates is a group of chordates with a well developed vertebral column. In this group, the…

Q: Members of which phylum are known as "segmented worm" Write about their body symmetry, mode of…

A: The segmented worms belong to the phylum Annelids.  Annelids are also known as ringed worms. It is a…

Q: All insects have jointed appendages and radula. have exoskeletons or cuticles. undergo complete…

A: The answer is option B - have exoskeletons or cuticles. The insect exoskeleton is the external…

Q: A Crustaceans, like annelids, are segmented animals. But crustaceans unlike annelids have tagmata.…

A: Class Crustaceae of phylum Arthropoda like other members of Arthropoda are joint-legged organisms.…

Q: Compare and contrast the body characteristics of a flatworm, nematode, and annelid in the figure…

A: The classification and differentiation of different organisms is based on their physiological and…

Q: Which phylum is characterized by animals thathave a segmented body?(A) Cnidaria(B)…

A: Segmented body is the division of body plans in some animals in which the body is divided into the…

Q: Annelids, Arthropods and Molluscs are protostomes. Give reason.

A: Answer: Introduction: Protostomia is a group of animals comprising phyla the Arthropods, Annelids…

Q: Develop a DICHOTOMOUS KEY to the CLASSES of Phylum      ECHINODERMATA:      Class Asteroidea…

A: Since we only answer 1 question in case of multiple question, we’ll answer the first question as 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: Walkng in the beach you see an animal with a hard shell and many jointed appendages. Determine…

A: Arthropods  These are invertebrate animals that possess  exoskeleton with segmented body, and paired…

Q: Which are not classified as molluscs? Answer Clams Squids Lobsters Nautiluses

A: Molluscs are found in the phylum invertebrate. Molluscs have three parts in their body: Head: It…

Q: Which would be found in both flatworms and cnidarians? a digestive system with a single opening a…

A: Phylum Cnidaria include all marine species like corals, jelly fish and Hydra and have a bilateral…

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…

Q: Question: The development of amniote eggs allowed animals to move away from water.   True or False

A: Cells are the basic units of life and based on the cellular composition and complexity living…

Q: Pleopods of prawns are far larger in comparison to body size than crayfish What might this tell you…

A: Abdominal legs of crustaceans are called as pleopods. Pleopods are also called as swimmerets.

Q: Crustacea manage to swim backward by means of their (choose two) telson uropods siphon gill bailers…

A: Answer : telson and uropods are correct. - telson forms the part of tail fan in crustaceans. When it…

Q: . SUMMARY OF THE ANIMAL KINGDOM Compare the animal groups by placing the correct number(s) in the…

A: Animals are classified into chordates and non chordates based on the presence or absence of the…

Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.