Describe the life cycle of freshwater eels. How does the life cycle of American eels differ from that of European eels?

Q: Why do anandromous lampreys die after breeding in the freshwater environment

A: Anadromous fishes are born in freshwater. They spend most of the time in salt water but they return…

Q: Review the extent of segmentation in Polychaetes, Leeches, Siboglinids, Echicrans, and Sipunculans.

A: Hi! Thank you for the questions. As you have posted multiple questions, I will be answering the…

Q: what is the reproductive strategy for fish?

A: Fishes are mostly oviparous. Polygamy, polyandry and monogamy are a part of the reproductive…

Q: Outline the life cycle of a gordiid nematomorph.

A: Ecdysozoans are a group of protostome animals that include nematodes, arthropods, and numerous…

Q: Do all of the tentacles of a squid have suckers?

A: Cephalopods belong to phylum mollusca. These exclusively marine animals are characterized by…

Q: Which of the following is the correct classification for the following invertebrate animal: These…

A: Animal are those organism who don't have cell wall in their cells. They can move from one place to…

Q: Describe the functions of the parts of the crayfish. What are the ecology and economic biology of…

A: Crayfish are freshwater crustaceans resembling small lobsters.They are members of the superfamilies…

Q: List three major distinguishing features of annelids

A: Annelids belong to the, Kingdom - Animalia Sub kingdom - Eumetazoa Few examples of annelids are as…

Q: Please label these two images of clam correctly

A:

Q: Discuss the evolutionary significance of lobe-finned fishes.

A: Lobe-finned fishes (Sarcopterygii) have a lobe in their fins. They have a paired fleshy pectoral and…

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: Contrast the body plans of a typical latworm and an annelid.

A: The flatworms represent the acoelomate organisms belonging to phylum Platyhelminthes. In contrast,…

Q: What features distinguish the two classes of annelids, and wheredo members of each group live?

A: Annelids are true-segmented worms. They belong to the phylum Annelida. They are usually found in…

Q: What is the function of Jacobson’s organ of snakes?

A: Order Squamata includes snakes, lizards, and amphisbaenians. The snakes are considered as the…

Q: Does sexual selection in cichlids resultin reproductive isolation?

A: Reproduction is the process by which an organism creates more of its own progeny. Reproduction is…

Q: various species of reef fishes, sex reversal is commonly associated with the animal’s _____. A)…

A: Sex reversal is the extreme example of phenotypic plasticity in which the phenotype changes…

Q: Describe the characteristics of pseudocoelomate roundworms.

A: pseudocoelomate are organisms which have a body cavity that is filled with fluid and the fluid…

Q: What is the importance of having swim bladders to aid in the sound production in fishes?

A: Q. What is the importance of having swim bladders to aid in the sound production in fishes? Fish are…

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: 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: Are most fast-swimming fish cold-blooded or warm-blooded? What advantage does this provide?

A: Some species of fishes possess a web of arteries and veins lying very close together which enables…

Q: Describe four important characteristics of fishes.

A: Fish are vertebrates, aquatic animals belonging to the phylum Chordata in the animal kingdom. They…

Q: Describe the characteristics of the annelids

A: Annelids is a phylum under Kingdom Animalia.  1. They exhibit organ-system level of body…

Q: Which structure of the ray-finned fishes allows for breathing in water while the fish is stationary?…

A: The fishes are found in the super class Pisces. They belong to chordates.

Q: List and describe the three classes of flatworms.

A: Flatworms are acoelomate,triploblastic,bilaterally symmetrical organisms.they are found in…

Q: Give an account of the stemum of frog?

A: Amphibians:   They are small vertebrates and almost live in a moist environment. They have special…

Q: What are differences between arm and tentacles of squid? Explain.

A: Squids & octopuses are commonly confused for one another for a reason. Because, they're both…

Q: Explain how coelenterates defend themselves when swimmers venture into their habitat

A: Coelenterates are aquatic animals that have a tissue level of organization. They are mostly marine…

Q: Contrast the swimming of sharks with that of bony fishes.

A: Swimming in bony and cartilage fish.

Q: Describe the adaptations of crustaceans in aquatic habitats seen in the Crustacea

A: Crustaceans are the group of organisms under the Kingdom Animalia and phylum Arthropoda. These are…

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.