Which is not true of both platyhelminths and xenacoelomorphs O possess nephridia O are triploblastic O acoelomate O hermaphroditic

Q: Which of the following is not a correct pair? (a) protonephridia; flatworm (b) metanephridia;…

A: Excretory system involves the removal of the digested materials that are eliminated from the body.…

Q: Which of the following is NOT present in all Annelids? O complete alimentary canal O coelom O…

A: The annelids, commonly known as ringed worms or segmented worms, are a vast phylum that includes…

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: This TRUE of enterocoely. O Results in the formation of coelom. O Results in processes in protostome…

A: Embryonic development refers to the development of a multicellular embryo from a fertilized egg.…

Q: ard calcium carbonate structures are sed as skeleton by: Echinodermata Arthropoda

A: skeleton is a structural frame that supports an animal body. It is of two types endoskeleton and…

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: All ctenophores have tentacles O True

A: false

Q: The shells of molluscs have 3 layers. Which is not one (nacreous/mantle/periostracum)?

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

Q: Reptiles (a) are all endotherms (b) are amniotes (c) have a great deal of keratin in their epidermis…

A: Vertebrate includes all species of animals within the vertebrata subphylum. These represent the…

Q: Trochophore larvae are characteristic of (a) arthropods (b) cnidarians (c) flatworms (d) mollusks…

A: Answer is d.)  mollusks.

Q: Vhich of the following DA All Mollusks have radulae. B Some mollusks, but not all, have a variation…

A: Phylum can be defined as the level of classification or belongs to a taxonomic group below the…

Q: The chondrichthyes (cartilagenous fishes) have teeth not anchored to their jaw. The reason for this…

A: Animals (likewise called Metazoan) are multicellular eukaryotic creatures that structure the natural…

Q: Function of the mouth in cnidarians includes O A. food ingestion B. solid waste egestion O C. water…

A: Cnidarians are the aquatic invertebrates that exhibit two phases of life: The free-floating stage…

Q: Which of the following is NOT true about nematocysts? O They are structures housed in special cells…

A: Classification is the process of systematically arranging the entries in different levels on the…

Q: Which is NOT true for Hydra? O dioecious O ciliated planula larva O asexual reproduction by budding…

A: Hydra is a genus of phylum Cnidaria and class Hydrozoa genus of tiny freshwater creatures. They are…

Q: What feature unifies all the classes of annelids Select one: Oa Parapodia Ob. Choanocytes Oc.…

A: The phylum Annelida consists of mainly segmented worms. They have a true coelom, are bilaterally…

Q: sea star oral 3.The _________________ ___________________ is inverted and pushed into the shell of a…

A: Echinoderms are marine invertebrates that includes bilateral animals like star fish, sea urchins,…

Q: The presence of a bony skeleton, an operculum, and a swim bladder areall defining characteristics…

A: The Myxini have a partial cranium (skull) and skeleton is composed of cartilage. The Lampreys lack…

Q: Nematodes (roundworms) differs from an earthworm in that: O a. Nematodes have no body cavity. O b.…

A: Invertebrates are organism that do not posses a vertebral column throughout their life.  They are…

Q: What is the excretory/osmoregulatory organ of mollusks? a. Flame cells b. Malpighian tubules c.…

A: Mollusca is the second largest invertebrate phylum, after arthropoda. It contains about 1, 00, 000…

Q: A palr of målé and female roundworms were observed in a stool sample. These parasitic worms would be…

A: Answer to question 2 is option B.) Nematodes.

Q: You find a flatworm during a field trip and discover that the embryos undergo spiral cleavage. What…

A: The daughter cells are positioned in the grooves of the parent cells in a spiral division. The…

Q: Some amphibians never leave the water, whereasothers can survive in relatively dry terrestrial…

A: Amphibians are living organisms that can survive both in water and on land. The common examples are…

Q: Which of the following worms deposit their eggs in the perianal folds? a)tapeworms b)liver fluke…

A: These are all human parasitic nematodes or trematodes.

Q: The vast majority of Rhizarians feed using long threadlike structures known as: pseudopodia O collar…

A: The vast majority of the Rhizarians feed using long threadlike structures known as:  Pseudopodia

Q: Annelids have nephridia whose function i

A: Annelids are the invertebrates belonging to the phylum Annelida, some example of annelids are:…

Q: Amphibians O All of the above Usually hatch in a less developed larval form O Migrate south to…

A: Amphibia is a class of vertebrates which spend some part of their life cycle on land and remaining…

Q: All acoelomate bilateral animals have protonephridia. O True O False

A: acoelomates are bilateral animal that does not exhibit a body cavity. They are very primitive in…

Q: The class of annelid worms which differs from all other classes of annelid worms in that it lacks an…

A: Phylum name: Annelida, commonly known as segmented worm, is a phylum of invertebrates that includes…

Q: The earthworms are different than the leaches in that the earthworms move by; Using chetae to anchor…

A: According to the question, we have to explain the reason the earthworms are different than the…

Q: Xenacoelomorpha are characterized by all of the following except: protonephridia hermaphroditism…

A: Xenacoelomorpha is a invertebrate belonging to a small phylum and have two sister groups namely…

Q: Although tunicate larvae have a notochord, adult tunicates do not. The reason for this is; The…

A: Even though Tunicates come under the category of Chordates but they do not have notochord.

Q: The Icefish belongs to the family called: Serranidae Bathydraconidae Notothenioid fishes…

A: The icefish is also known as crocodile icefish or white blooded fishes. They lack haemoglobin in…

Q: The excretory structure of the earthworm is, 1. A protonephridium 2. An ananephridium 3. A…

A: Numerous invertebrates have nephridium, an organ used for excretion. Two varieties of nephridium…

Q: The swim bladder found in bony fishes;

A: Animals (likewise called Metazoan) are multicellular eukaryotic creatures that structure the natural…

Q: In which of the following aspects are nematodes more complex than flatworms?    a. External…

A: Nematodes are also known as round worms. Flatworms belong to phylum platyhelminthes.

Q: Ctenophores are carnivores. O True False

A: The animals are characterized by different attributes like presence of cilia, combs, pores, fins,…

Q: During embryonic development, if the blastopore of the gastrula forms the mouth opening second (anal…

A: C. deuterostome are correct answer. The animal is classified as a deuterostome.

Q: Which is not true of both platyhelminths and xenacoelomorphs Group of answer choices acoelomate…

A: Platyhelminthes are flatworms having many classes of triploblastic and are acoelomate flatworms that…

Q: Which is false about animal xygote?  it's produof fertilized egg   it's totipotent stem cell…

A: A zygote is a fertilised egg cell produced by the union of a female gamete (egg, or ovum) and a male…

Q: The lophophore is Aa common developmental stage of the Lophotrocozoa. Ba synapomorphy of the…

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

Q: Cnidarians only have one opening for a “gut” (gastrovascular cavity) and this slows down their food…

A: Cnidarians are animals that belong to the Cnidaria phylum. Invertebrates make up the majority of the…

Q: Name the animal shown in this picture. O Nematoda O Mollusca OAnnelida O Cnidaria OPlatyhelminthes

A:

Q: Tunicates have pharyngeal slits for: a. Filter feeding. Ob. Catching its prey (as a predator). С.…

A: Tunicates, moreover called urochordates, are an amazingly assorted subphylum of the Chordata, a…

Q: Name the excretory product of (i) reptiles (ii) Prawns.

A: Introduction  Excretory Products: there are generally three type of standard excretory products…

Q: In most flatworms solid waste is eliminated via the O A. anusS O B. mouth O C. nephridiopore O D. A…

A: It is a multiple choice question.

Q: The live "vinegar eels" we observed in lab belong to the phylum: O Mollusca O Annelida O Nematoda O…

A: Taxonomy, is the method to arrange differed organism in botany and zoology in a hierarchical…

Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.