how do marine fish perform osmoregulation? A) through gaining water through the gills B) through gaining salt through the gills C) Through drinking water and eating food D) through excreting large amounts of dilute urine 

Q: How is the excretory system of molluscs characterized?

A: The mollusks are diverse morphologically and live in many types of environments. It includes snails,…

Q: 1. Is there a male or female crayfish? 2. How many swimmerets does a crayfish have? 3. How many…

A: DISCLAIMER: Since you have posted a question with multiple subparts, we will solve the first three…

Q: How does the siphon's action allow the squid to move quickly through water? Explain in 7 sentences.

A: The principle of siphoning. Surface tension squeezes the liquid stream in to the different drops…

Q: Sea Urchin and Sea Cucumber (cont.) What is the motility strategies for both of them? How do they…

A: Echinoderms are invertebrates (animals without backbones) that include sea urchins and sea…

Q: What is the locomotion in pelagic urochordate

A: Urochordata is a group of animals with a notochord and nerve cord confined to the tail region in the…

Q: Are the bony fishes uricotelic or ammoniotelic?

A: Bony fishes are placed in the Class Osteichthyes and includes all fish that have bones. They are…

Q: What would happen to freshwater unicellular organisms if suddenly released in a saltwater…

A: Some of the unicellular organisms found in fresh water( ponds, rivers, streams) are  ameoba,…

Q: What controls the opening and closing of the clam's shell?

A: Clam is a common name for several kinds of bivalve molluscs.

Q: What is septal nephridia on earthworm?

A: The excretory system of earthworm contains a pair of nephridia in every segment except first three…

Q: What function other than feeding do suckers serve?

A: There are many organisms that have sucker which is a kind of attachment in the body. It is found in…

Q: Describe the excretory system of lizard?

A: Reptiles like crocodiles, snakes and lizards are uricotelic organisms, i.e., the primary nitrogenous…

Q: Discuss in detail the excretory system of Lizard?

A: The animal body is a well built machine in which all the organs coordinate together to make it work.…

Q: What is the name of this fish?

A: squirrel fish

Q: Describe the unique excretory system of insects. How is uric acid formed?

A: Excretion is the process of removing metabolic wastes from the body. The excretory system varies…

Q: What are the disadvantages of a flatworm’s digestive system having only one opening?

A: Flatworms are a soft-bodied group and are flattened invertebrates. The species of flatworms are…

Q: What is so primitive about the gastrointestinal system of free living flatworms?

A: Flatworms are basically defined as the soft bodied organisms that have flattened body. The tapeworm…

Q: Define the following: ctenidia, odontophore, periostracum, prismatic layer, nacreous layer,…

A: After Arthropoda, the largest animal phylum is Mollusca. This phylum contains around 90,000 living…

Q: How do giant tube worms receive their nutrition?

A: Giant tube worm is a completely marine invertebrate located under the phylum annelida.  It has a…

Q: How can the excretory system of annelids be described?

A: Annelids have a unique excretory system consisting of nephridia similar to kidneys in humans.…

Q: View a dissected clam on the website. Make sure you can identify the mantle, the foot, the gills,…

A: 1.) Function of foot in clam is foot enables the clamp to borrow itself in mud or sand. 2.) Function…

Q: What characteristics of Tiktaalik are fish-like?

A: Fossils are the evidences for the history of the life on earth, the remains of a organism or any…

Q: What is the excretory matter in scoliodon ?

A: Scoliodon is  cartilagenous fish which belongs to the phylum vertebrata of class elasmobranchii and…

Q: what are the advantages of FISH ?

A: FISH is a fluorescent in situ hybridization technique which is used to detect numeric anomalies of…

Q: How do annelids feed, exchange gases, and move?

A: Annelids are the phylum of animal kingdom that represent the segmented body also known as segmented…

Q: What advantage does an animal gain by having agallbladder?

A: Gallbladder is a duct which stores the bile juice secreted by the liver

Q: Name the excretory organ of cockroach.

A: Excretory organs are those organs which collects waste products from the body and sent it outside…

Q: What modification do sea anemones possess that allows food and water to be distributed among the…

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: Name the fluids associated in adult lizards?

A: The lizards are cold-blooded chordates that belong to the class of reptiles. They are native to…

Q: Draw the structure of nephridial system in earthworm?

A: Nephridia carry out the excretion in the earthworm. It is present in pairs in the body’s segments.

Q: Give the role of pharynx in larval and adult lamprey?

A: The jawless vertebrates belong to the subphylum Vertebrata under the section Agnatha. The…

Q: The earthworm excretory structure is considered to be A. A protonephridium B. An ananephridium C. A…

A: Nephridium is an organ that is present in several invertebrates for excretion. There are two types…

Q: How do sea star tube feet attach to substrates?

A: Tube feet are also called podia and these are small mobile tubular projections on the oral front of…

Q: How is excretion done inamphibians?

A: Amphibians are the cold-blooded vertebrates. They can live in water as well as on land. There…

Q: What is a dihybrid?

A: Mendel after studying the pea plant genetics comes to few conclusions which he summarised into 3…

Q: Why is it a problem to the animals lacking siphons to live in the sediment? List two problems.

A: The aquatic molluscs belonging to the classes Cephalopoda, Bivalvia, and Gastropoda contain…

Q: Explain the excretory system of cockroaches.

A: Excretory system refers to the biological system that is involved in removing both solid and liquid…

Q: In cephalopods contraction of _____________________of the mantle force water from the mantle cavity…

A: Give options.  radial----inhalant valve circular-----inhalant valve Radial----funnel (siphon)…

Q: What is tufts of pharyngeal nephridia of earthworm?

A: Earthworms have a long cylindrical body which is divided into numerous segments. The body is divided…

Q: When did gills first appear?

A: Introduction: Gill is found in several aquatic living organisms and acts as their respiratory organ.…

Q: How do nephridia of annelids compare to the flame ceels of flatworms and the nephridia of…

A: Phylogenetics is the study of how different organisms are sharing evolutionary relationships with a…

Q: What is the function of gastrocnemius msucle in the frog?

A: The construction of the muscular, skeletal, and other anatomical frameworks are explicitly changed…

Q: What’s an invertebrate?

A: RH Whittaker gave the five-kingdom classification and divided all the living organisms into the five…

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: How many types of nephridia are found in earthworm based on their location?

A: Nephridia are the main excretory organs in earthworms. They are associated with excretory and…

Q: What is vasa deferntia in earthworm?

A: Earthworm . scientifically named as Lumbricina terrestris is a terrestrial invertebrate. They have a…

Q: Give a short note on pigeon's cloaca?

A: Cloaca is the pigeon's reproductive organ. Cloaca can be defined as the combined opening for the…

Q: What is an example of freshwater flatworm? Due to that habitat what is the physiological problem…

A: Flat worms classified under Phylum Platyhelminthes. Platyhelminthes such as planarias has much more…