Q: what is the reproductive strategy for fish?
A: Fishes are mostly oviparous. Polygamy, polyandry and monogamy are a part of the reproductive…
Q: Define the role of buccal cavity in earthworm?
A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…
Q: List and describe the characteristics that fishes have incommon.
A: VERTEBRATES:- These are those organisms that are without any strong structural support means…
Q: Give the names of the three divisions of cloaca in sand lizard in order beginning from anterior end?
A: Cloaca is the common chamber and outlet that opens into the exterior. It is present in amphibians,…
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 controls the opening and closing of the clam's shell?
A: Clam is a common name for several kinds of bivalve molluscs.
Q: What features of squid and octopuses are adaptations for predation?
A: Mollusks are a part of the invertebrate phylum. These include slugs, mussels, snails, and octopuses.…
Q: What are the lateral linesof fishes?
A: Vertebrates comprise all species of animals within the subphylum Vertebrata. Vertebrates include…
Q: What are Annelids ?
A: Phylum Annelida belongs to the kingdom Animalia. They are found in both aquatic and terrestrial…
Q: . What are the major types of cartilaginous and bony fishes?
A: A chordate is a creature of the phylum Chordata. During some time of their life cycle, chordates…
Q: Explain the internal and external anatomy of a squid.
A: External Anatomy of the Squid: A squid has three principle body parts: the mantle and balance, the…
Q: How is gas exchange done in flatworms?
A: Flatworms come under phylum platyhelminthes and kindom animalia. These flatworms are found in the…
Q: Give the differences between lancelet and lamprey with regard to the external characters?
A: Lancelets belong to a class of Cephalochordata, primitive chordates. They are small animals usually…
Q: What is the type of circulatory system present in annelids?
A: The animals are the most abundant living organism that are found in almost every habitat. They have…
Q: Describe the feeding mechanism of a Hydra.
A: Hydra is fresh water organism that belongs to phylum coelenterata , radially symmetrical that…
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: What are lobe-finned fishes ?
A: Fish are oceanic, craniate, gill-bearing creatures that don't have appendages with digits. The…
Q: Define angelfish)
A: Angelfish are found throughout most of tropical South America, including the Amazon River system.…
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: Explain about ray-finned fishes ?
A: ray-finned fishes, is a class of bony fishes. The ray-finned fishes are so-called because their fins…
Q: How does the swim bladderof fishes work allowing fishesto control their depth underwater?
A: Fishes are vertebrate animals belongs to the family of Pisces. Fishes are aquatic organism’s lives…
Q: Explain the differences between the two types of shellfish and provide three examples of each.
A: Shellfish is a colloquial and fishery name for aquatic invertebrates with exoskeletons that are…
Q: How are differences in the anatomy of lampreys andconodonts reflected in each animal’s feeding…
A: Lampreys are categorized into the category of Cyclostomata (jawless fishes), whereas Conodonts are…
Q: How do eggs of lancelet and lamprey differ?
A: Lanceletes commonly called amphioxus are marine living, small, eel like animals that belong to the…
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: Briefly describe how a typical bivalve feeds and how it burrows.
A: Bivalvia is also called Pelecypoda. It is derived from the Greek word pelekys, hatchet, podos, and…
Q: What is the purpose of gill slits?
A: Gill slits are defined as the individual openings to the gills which lack a single outer cover.…
Q: Why swim bladders are important in sound production of fishes?
A: A gas filled sac usually along the dorsal wall of the bony fishes . It is an outgrowth of the…
Q: Briefly explain the mechanism of action of a sea star’s tube foot.
A: Tube feet, also called podia are the small tubular projections on the oral surface of an echinoderm,…
Q: List the characteristics of fishes.
A: The division gnathostomata is divided into two super class , Pisces and tetrapoda .
Q: What features distinguish annelids from roundworms?
A: Annelids and roundworms belong to the phylum non chordata of the animal kingdom. They do not have…
Q: Describe the coelom of a bony fish?
A: Coelom is a fluid-filled body cavity found in metazoans between the body wall and gut wall. It…
Q: What are the two main classes into which fishes are divided?
A: Vertebrates comprise all species of animals within the subphylum Vertebrata. A vertebrate have a…
Q: List the similarities between lancelet and the lamprey?
A: Phylum Chordate which is characterized by the presence of notochord and dorsal nerve cord consists…
Q: Sandworm and Leech Compare the external features of sandworm and leech, then compare them to the…
A: The lugworm or sandworm (Arenicola marina) is a large marine worm of the phylum Annelida. Leeches…
Q: Give differences between the lancelet and lamprey regarding gill slits?
A: Lancelets commonly called amphioxus are marine living, small, eel like animals that belong to the…
Q: What do non-parasitic lampreys do?
A: Lampreys are aquatic jawless vertebrates with an eel-like appearance. They are mostly found in…
Q: How do fishes breathe?
A: Introduction Fishes are the aquatic animals which either live on surface or in the water. Unlike…
Q: Explain how the high pseudocoelomic pressure affects feeding and defecation in nematodes.
A: The pseudocoelom is a fluid-filled body cavity that is situated inside the external body wall of the…
Q: What are the structural adaptations of freshwater leech from marine ones?
A: Leeches fall under the Phylum Annelida. They are segmented parasites, meaning, they derive their…
Q: Describe the exoskeleton of mealworm larva and crayfish
A: Exoskeleton refers to the structure of a rigid envelope that aids in supporting and protecting soft…
Q: How do jelly fishes locomote?
A: Jellyfishes are marine organisms that belong to the kingdom Animalia, and there are many kinds of…
Q: Tabulate differences lancelet and lamprey with regard to their habits , external characters, muscles…
A: Lamprey and Lancelet belong to Vertebrata of the phylum Chordata and fish-like Cephalochordata.
Q: What are some advantages of freshwater clams producing parasitic larvae that attach to the gills of…
A: Glochidia, parasitic larvae of freshwater clams, attach themselves to the gills and skin of fish.
Q: How do ammocoetes and adult lamprey differ?
A: In morphology and behaviour, the larval stage of the primitive lamprey, known as an ammocoetes…
Give the role of pharynx in larval and adult lamprey?
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- Describe several modifications of the digestive and respiratory systems which are specializations for the lamprey's parasitic lifestyle.Provide a title for this diagram of the starfishWhat is the life cycle of sea lampreys, and the various control methods for lampreys intersect with this life cycle?