In order to flip themselves upright, horseshoe crabs use their: Chelipids Telson Gnathobases Spatula Uropods

Q: Describe the characteristics of the Class Turbelleria by checking all that apply. They are…

A: The objective of the question is to identify the correct characteristics of the Class Turbellaria, a…

Q: These differ from the other classes of sponges in that their cells are syncytial (multinucleate and…

A: Sponges are comes under the group called Porifera. The presence of pores on their body is a special…

Q: Choose the locomotion mode of each taxonomic group (use once): Echinoidea [ Choose ] [Choose]…

A: Locomotion means movement from one place to another. There are different body organs for the body to…

Q: All acoelomate bilateral animals have protonephridia. Group of answer choices True False

A: ▪︎Acoelomates are the organisms which do not possess a body cavity.They are triploblastic, their…

Q: Which of the following statements is true? --Sea stars are dioecious possess dermal branchiae and…

A: Sea stars are dioecious possess dermal branchiae and they have two stomachs.True: Sea stars are…

Q: completely converted into the water-vascular system. restricted to a small space around the gonads.…

A: Echinoderms have a spacious coelom (an open, fluid-filled body cavity lined with tissue), large…

Q: Briefly describe the distinguishing morphological features of each of the following: eurypterids,…

A: Eurypterids, horseshoe crabs, and pycnogonids are classified under the Subphylum Chelicerata. In…

Q: please exaplain   The juvenile stages of some insects are merely small versions of the adult: they…

A: The changes in form that occur as an insect approaches adulthood is called metamorphosis.

Q: Barnacles can move as adults. True or False?

A: Step 1 - False . Barnacles do not move as adults but remain attached to their substratum ( termed as…

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: An arthropod that lacks mouthparts for chewing food is called what?

A: Most of the mouthparts in arthropods represent modified and paired appendages which may be in past…

Q: Choose all the phyla we looked at in this lab that have a hydrostatic skeleton. nematodes molluscs…

A: Nematodes, mollusca and annelids all the three have hydrostatic skeleton. The hydrostatic skeleton…

Q: The organ that functions to coat annelid worms with a mucus-derived cocoon is the uterus O clitellum…

A: Annelid worms These worms belong to the phylum Annelida. These are also called segmented worm, that…

Q: In addition to a spinal column, what key feature distinguishes members of Vertebrata from Chordata?…

A: Animals can be differentiated on the basis of the presence of backbone. Species with notocord or…

Q: Please match the Arthropod subphylum or class to the description. two pairs of antennae [ Choose ] […

A: Arthropoda is a largest phylum in Animal kingdom.

Q: Give the order for the life cycle of the hydrozoan, Obelia, starting with the polyp form.…

A: Obelia is a marine and freshwater animal species belongs to the genus hydrozoans. It is also called…

Q: It forms pseudopods that ooze forward or backward. It contracts longitudinal muscles, which puts…

A: Ans- It contracts longitudinal muscles, which puts pressure on the hydrostatic skeleton and causes…

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: What is the external rigid carapace of arthropods called? Of which substance is it made? Which type…

A: The Arthropoda is the largest phylum in the Kingdom Animalia in terms of the number of species. It…

Q: When a planarians injured:   animal dies loses stem cells damaged tissue forms a scar the wound…

A: Planarian are found in platyhelminthes in the animal kingdom.

Q: A)  State the function of the following external parts of the genus Cambarus (Class Crustacea):…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

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: What body form do sea jellies exhibit, medusa or polyp? How do they catch their food?

A: Sea jellies are the invertebrate animals belonging to the phylum cnidaria. They do not have brains,…

Q: Earthworms are segmented animals. All of the following are present on/in most segments of an…

A: Origin The origin of earthworms was said to be on earth around 200 million ago. Their ancestors were…

Q: The dauer stage of worm development occurs:   1) when there is ample food   2) when there is…

A: Worms are the organisms of the animal kingdom that lack eyes and limbs. they have a cylindrical…

Q: Compare the reproductive system of an earthworm with that of Ascaris. Be sure to note both…

A: Both ascaris and earthworms are kind of worms. Earthworms are beneficial to the soil,and ascaris is…

Q: clitellum is the: Hirudina Cestoda Oligochaeta Platyhelminthes Permoclitellata All lack a permanent…

A: Clitellum is a glandular and unsegmented region of earthworms. It is situated near the head region…

Q: In planarians ampulation : What body parts are required for feeding? Do all of the planarians eat…

A: Planaria  They are free living flat worm belonging to the phylum Platyhelminhs. They have high…

Q: Which of the following is true about polychate worms (Feed using nematocysts/ part of the ecdysozoa/…

A: All animals are classified according to their presence of characteristics such as characters,…

Q: What is a syncytium? Do tapeworms possess syncytial structures?

A: Introduction :- A syncytium is a multicellular structure that develops from the union of several…

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: Why is the presence of a coelom advantageous? O it allows room for the development and movement of…

A: The coelom is lined by a muscular tissue called the peritoneum that encloses the internal organs.…

Q: Compare and contrast anatomy and ecological role of a Bivalve and a Cephalopod. Based on their…

A: Bivalve is a class of marine and freshwater molluscs. They have a flat body and include clams,…

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.