Which of the following structural characteristics of a gastrointestinal tract contributes to chemical digestion? A. The typhlosole of an earthworm B. The crop of a bird C. The chelicerae of a spider D. The radula of a mollusc E. All of the above

Q: The rhynchocoel is a ________. a. circulatory system b. fluid-filled cavity c. primitive excretory…

A: Step 1 The phylum Nemertea, also termed as ribbon worms are unique due to the presence of a…

Q: Although they are related, the digestive system of an earthworm and Ascaris are very different. Why…

A: Ascaris is a roundworm that belongs to the phylum Nematoda. It is a thin, unsegmented, parasitic…

Q: One-way passage of food through the digestive system of many animal groups allowsa. intracellular…

A: Digestion refers to the phenomenon by which food is digested in the body and is absorbed to fulfil…

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: Mention the structures labeled in the figure with 1,3, 4, 5, 17, 18 20 21 22 23 24 10 19 16 12 13 14…

A: Introduction :- Snail is a gastropod that has an enveloping shell that it may retreat entirely into…

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: in which of the following organisms does digestion occur outside the body? Select one: O a. Protozoa…

A: Extracellular digestion has allowed animals to feed on large organisms and has widely expanded…

Q: The microscopic extensions at the lumenal aspect of epithelial cells lining the intestinal wall are…

A: Intestinal wall consists of 4 layers: mucosa, submucosa, muscularis propria, and serosa.1. Mucosa is…

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: Observe the exoskeleton of the marine blue crab. What do you think they are made of?

A: Taxonomy is the study of organism categorization, it is the grouping (division) of all known species…

Q: What is true about a gastrovascular cavity? Group of answer choices a. It has generally evolved to…

A:

Q: Which of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata…

A: Chordate can be defined as the animal that will belong to the phylum Chordata. There is some period…

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: The bodies of all insects have major divisions.

A: Answer : Option (b) is correct

Q: Choanocytes are present in

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

Q: Which of the following results from sexual reproduction in sponges? a. Parenchymula  b. Gemmule…

A: Reproduction in sponges takes place in two ways- Asexual reproduction - with the help of buds,…

Q: The main function of the mucus in the stomach is to _____. a. trap and kill ingested…

A: Glycoprotein and water are the primary components of mucus. It consists of periciliary fluid and gel…

Q: Gills are found ina. fish.b. marine arthropods.c. mollusks.d. All of the above

A: Gills in fish are located on both sides of the pharynx, they help them to breathe underwater.

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: Archaeocytes are associated witha. digestion in bacteria.b. the digestive tracts of sponges.c. the…

A: Archaeocytes are otherwise called amebocytes. They are specialized cells present in the sponges. The…

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

A: Tapeworm: These are invertebrates of class Cestoda, these are parasitic and are around 5.000…

Q: Provide two characteristics of the digestive tract for an animal that eats mainly termites

A: Termites are eusocial insects belonging to order Blattodea.

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: 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: Based on how digestion is compartmentalized along the mammalian alimentary canal, what digestive…

A: Tapeworms are found in human intestines, where they feed on partially digested food. Three common…

Q: 1. What is the function of the organ shown below? A. Stores bile B. Produces pepsin and hydrochloric…

A: Introduction: Pancrease is an elongated compound (exocrine and endocrine activity) organ situated…

Q: Torsion is a unique characteristic of the a. bivalves. b. gastropods. c. chitons. d.…

A: Every group of organisms has some special characteristics that make them unique from others.…

Q: Choose which is FALSE among the following statements about the Phylum Annelida. A. Annelids have…

A: A. False.  B. True C. True D. False E.True.

Q: One example of Cephalopoda is

A: Cephalopoda is a class of Phylum Mollusca which is a small group of advanced and organized marine…

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: For question with blanks, choose the combination of answers that most accurately completes the…

A: Step 1 Kingdom Protista or Protoctista is the kingdom of all unicellular and colonial eukaryotes…

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: Which form(s) of a cestode can be ingested by a human that eats infected pork or beef that is…

A: Cestodes are adult worms that live in the small intestine; they are normally well tolerated or…

Q: One genus in Phylum Platyhelminthes is Turbellaria, which consists of free-living worms with a thin,…

A: They are bilaterally symmetrical, triploblastic, and acoelomate. They could be parasitic or…

Q: Compare the digestive systems of a flatworm and a human. Can you include examplesthe of the…

A: Digestion is a process by which food is broken down into the smaller component the body can absorb.…

Q: Which structure stops large particles from going into the cephalochordates pharynx? A. mucous net…

A: Cephalochordates, urochordates, and vertebrates are the three major groups of chordate animals.…

Q: All of the following statements are relevant to how sponges obtain nutrition EXCEPT: A. Plankton…

A: SPONGES Sponges feeds on particles that usually ranges from 0.1 to 50 um . The food consists of…

Q: With a gastrovascular cavity... A. Digestion is both extra-oral and intracellular B. Food enters and…

A: The simple digestive system found in many organisms with a central cavity connected to an opening is…

Q: Describe the advancements in the specialization of the digestive tract of earthworm in comparison to…

A: Introduction Earthworms are also known as farmers friend. As they improve soil quality and…

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.