Turbellaria are flatworms that have most of their body filled with: O a. Alarge complex reproductive system. O b. Branching digestive system. O c. Excretory system. O d. Muscles for swimming. O e. Extensive respiratory system.

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: 8. Which structure is indicated in this photo of a cross section through the middle of an…

A: In earthworms, the median dorsal vessel is the main circulatory structure that is responsible for…

Q: Animal having a coelom gives the advantage of: O a. It allows more efficient sense organs. O b. It…

A: A fluid-filled hollow cavity present in many living organisms is called coelom. It functions as a…

Q: E- Ammonoidea 1-Shell: 2-Aperture: 3- Suture: 4- Position of siphuncle: 5-Umbilicus: 6-Periphery:…

A: Ammonoidea and Nautiloidea are fossil cephalopods.

Q: Which of the following applies to a squid? a. Cephalization c. Complete digestive tract b. True…

A: The differentiation of the anterior end into the head is known as cephalization. It is associated…

Q: Cells involved in extracellular digestion in cnidarians. O A. enzymatic gland cells B. cnidocytes O…

A: Cnidarians are invertebrates that are also known as coelenterates that belong to the Phylum…

Q: Which of the following is not an arthropod?a. arachnidsb. crustaceansc. rotifersd. insectse. All of…

A: Out of arachnids , crustaceans , rotifers and insects only Rotifers are there which is not an…

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: The nervous system of the Hydra is _______ _______ while the flatworm’s is ________ _________.…

A: Introduction In terms of biology, symmetry is referred to as the repetition of parts in animals or…

Q: What adaptation did lobe- finned fish have that was different than the previous organisms? A. lobes…

A: Introduction  Fish are aquatic vertebrates that lack limbs with digits, such as fingers or toes, but…

Q: Flatworms (platyhelminthes) possess a O A. metanephridial system B. protonephridial system O C.…

A: Flatworms are unsegmented organisms that are bilaterally symmetrical and are acoelomates. They have…

Q: Feeding rosettes can be observed on the surface of the sediment and are formed by Group of answer…

A: It is a multiple choice question.

Q: A paramecium (ciliated protozoan) ingests a poison, the poison inhibits the function of its…

A: Paramecium The slipper like protozo having cillia all arround the cell wall.

Q: Choanocytes are present in

A: Answer - Option D - Spongocoel In simple sponges, the choanocytes are present in the lining of the…

Q: The function of the apical complex in apicomplexans is toa. propel the cell through water.b.…

A: The species belonging to phylum Apicomplexa are parasitic alveolates. These protists have an unique…

Q: of these features is absent in Porifera? Select one: O a. Complete digestive tract O b. Circulatory…

A: Porifera is the phylum of most simple aquatic organisms. They are eukaryotic multicellular and made…

Q: If chaetognaths belong to Lophotrochozoa, they would be more closely related to animals like…

A: Chaetognaths are phylum of the predatory marine worms.

Q: 7. The embryos, oncospheres of taenia saginata are released in the a. Liver of cattle b. Liver of…

A: Hi, Thanks For Your Question.  Q. 7 The embryos, oncospheres of taenia saginata are released in the…

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: Corals belong to which of the following? a. comb jellies b. rotifers c. sponges d. None of these are…

A: Kingdom Animalia contains all animals. It is the largest kingdom of Animalia as compared to other…

Q: The sister taxon of the Chordata is the _____. a. Mollusca b. Arthropoda c. Ambulacraria d. Rotifera

A: All living organisms are classified based on their internal and external features. The science of…

Q: The larval stage of a cnidarian is known as a a. medusa. b. planula. c. polyp. d. cnidocyte.

A: Non-chordates are the life forms that do not have any backbone or notochord in their structure.…

Q: 1. All hymenopterans have narrow waists. true/false 2. Trichopterans have scales on their wings.…

A: Answer 1st answer true 2nd answer false

Q: Match the taxa to their feeding mode + Pterobranchia A. Suspension feeders + Cephalochordata B.…

A: Pterobranchia is suspension feeders. They use their hollow ciliated arms and tentacles to catch…

Q: Flagellates parasitic for man which have a single flagellum belong to None of the above .a O…

A: Flagellates may be solitary, colonial (Volvox), free-living (Euglena), or parasitic (the…

Q: A coelomate organism may have which of the following characteristics? a. Circulatory system b.…

A: A coelomate organism may have which of the following characteristics?

Q: If the lateral cilia of pterobranch tentacles are inactivated what would be the likely consequence?…

A: Pterobranchia are marine invertebrates that live in the ocean flower and are small worm-like…

Q: 10. Which phyla has a notochord? Group of answer choices a.Porifera b.Chordata c.Nematoda…

A: option (b) is correct answer.

Q: Bivalves, cephalopods, and gastropods are alla. arthropods.b. lophophorans.c. cnidarians.d.…

A: Animal Kingdom is a diverse group, including organisms ranging from non-motile simple sponges to…

Q: Characteristics of mollusc are O A. Mantle B. Mantle cavity O C. All of these O D. Coelom E. Radula

A: Cells are the basic unit of life. Living organisms could either be unicellular or multicellular.…

Q: All of these animals catch plankton with feathery things except A. Phoronid B. Ribbon worm C. …

A: A diverse group of organisms present in water that is carried by tides and currents is referred to…

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: In arthropods, the tracheal system isa. a unique set of structures that function in ingestion and…

A: Arthropoda belongs to the Kingdom Animalia and is known for having segmented bodies with appendages.…

Q: Earthworms are known to consume which of the following materials except: O living plant tissues…

A: From above question   Correct answer is living plant tissue(roots)

Q: Cnideria

A: Answer is option E. Aside from sponges, all animal phyla have a digestive tract, or gut. Cnidaria…

Q: Why is nematode species C. elegans so famous? A. t secretes a glue that may be useful for pacemaker…

A: C .    it makes an antibiotic ..... C. elegans nematodes have nerves, skin, intestines, muscles,…

Q: u. equivaive 7. In many insects, the body is of taxonomic importance. the arrangement of on

A: This question is based on taxonomy and anatomy of insects.

Q: Animal having a coelom gives the advantage of: O a. It allows more efficient sense organs. O b. It…

A: The study of biology that deals with the structure, function, evolutionary classification and…

Q: Tapeworms differ from other flatworms in that for movement: O a. They have well-developed muscles…

A: Tapeworm have pair of suckers that can attach and release Tapeworms has two distinct classes of…

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: You are confronted with two worms that, on first glance, appear to be very similar. Upon closer…

A: Introduction :- An earthworm is a type of worm that belongs to the phylum Annelida. They are…

Q: trophozoites best fit the following descriptions ? • Motility: Sluggish , usually nonprogressive…

A: * Entamoeba coli is a non pathogenic species belongs to entamoeba genus that inhabitats the…

Q: Match each structure with its descriptions. ____ radula                     a. internal skeleton…

A: Human anatomy and physiology are concerned with how the human body works to keep itself alive and…

Q: While studying the embryonic development of an organism, you determine that the blastopore of the…

A: During the embryonic development of an organism, the blastopore of the developing gastrula is…

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.