what  is a carapace?

Q: What class of Chordates is considered as the most advanced and highly specialized?

A: Phylum Chordata belongs to the Kingdom Animalia and includes all the vertebrates, i.e., animals with…

Q: Is scoliodon a shark?

A: Elasmobranchii is a subclass of cartilaginous fishes that have five to seven laterals to ventral…

Q: How does the foot of a bivalve differ from that of snails or chitons?

A: Limpets or Notoacmea, Collisella are known as small, cone-shaped shells found on the rocks…

Q: In what ways do the genera Australopithecus and Homo differ?

A: Genetic evidence showed that about 7-10 million years ago, humans were evolved from chimpanzees. The…

Q: Which Animals Are Chordates?

A: Animals are multicellular eukaryotic organisms belonging to kingdom Animalia that are heterotrophic,…

Q: What are the lateral linesof fishes?

A: Vertebrates comprise all species of animals within the subphylum Vertebrata. Vertebrates include…

Q: Define the Chordate characteristics ?

A: The chordates belong to the Chordata phylum of the animal kingdom. The name Chordata comes from…

Q: How are the vertebrates related?

A: Vertebrates refers to all the species of animals within the Subphylum Vertebrata. Subphylum…

Q: Give a short note on Snout-Producing organ?

A: The olfactory system is a sensory system that is used for olfaction. It is one of the special senses…

Q: How is the large size of some cephalopods related to the type of circulatory system they present?

A: Mollusca is the largest marine phylum of the animal kingdom that is characterized by a mantle with a…

Q: Describe the body wall of pigeon?

A: Pigeon, scientific name: Columba livia belongs to phyla avian. The body of a pigeon is spindle or…

Q: How closely is Homo sapiens related to Neandertals?

A: Evolution is change in the heritable qualities of organic populaces over progressive ages. These…

Q: How do penguins differ from other marine birds?

A: Birds, belonging to the class Aves, are the warm-blooded vertebrates possessing feathers. They have…

Q: Do all chordates have backbones?

A: Chordates having following characters: Presence of dorsal hollow nerve cord. Presence of notochord.…

Q: What are four distinguishing characteristics of chordates?

A: The four qualities of chordates are a notochord, dorsal, pharyngeal cuts (or pockets), and postanal…

Q: What is archegonium?

A: Archegonium is a female sex organ that is found in bryophytes, pteridophytes and most gymnosperms.

Q: What are Bony Fishes ?

A: Fishes can also be classified into two types based on the type of skeletons ,they are Osteichthyes…

Q: Do octopus and squids have exoskeleton?

A: An exoskeleton is an outer cover present on the body of an animal. In most of the animals it is made…

Q: What is the biggest turtle in North America?

A: Turtles are reptiles of the order Testudines characterized by a special bony or cartilaginous shell…

Q: Which amniotes are endothermic? What are some advantages of endothermy?

A: An organism alludes to something living that has a coordinated design, can respond to boosts,…

Q: what were the earliest members of the genus Homo?

A: Human evolution is the evolutionary path that led to the development of anatomically modern humans,…

Q: Do echinoderms present with cephalization?

A: Cephalization is the formation of a central nervous system in organisms. Cephalization is important…

Q: What is the classification of animals based on the feeding habit?

A: Animals are classified based on different criteria including the place they live in, the type of…

Q: Why are external skeletons important for soft-bodied invertebrates?

A: Skeleton is the robust structure exhibited in the organism which act as scaffold for the body.…

Q: How many common characteristics do cetaceans share with mammals and fish?

A: According to the question, we have to explain how many common characteristics cetaceans share with…

Q: What is/ are the major comparison(s) between the tunicates and bony fish? Are tunicates…

A: Tunicates belong to sub phylum urochordata. These are marine animals. They have an outer covering of…

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: What is an ambulacrum, and what is the difference between open and closed ambulacral grooves?

A: Biological diversity is the presence of variability of life on Earth. It measures the genetic…

Q: What is a primate?

A: Cell is a basic structural and functional unit of all life forms. All organisms are made of at least…

Q: Define paired pharyngeal gill slits?

A: The chordates are the members of phylum Chordata. They include humans and various other vertebrates.…

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: Have the head fold and tail fold fused to form the ammiotic cavity?

A: The longitudinal and transverse folding that happens as a result of embryonic expansion,…

Q: What class do sea turtles belong? How do you know?

A: Vertebrates originated in the ocean. Land vertebrates descended from Bony fishesEvolved two pairs of…

Q: What is a body structure that is found in Bony fish but not in Cartilaginous fish?   Teeth Gills…

A: The animal kingdom is diverse constructing millions of species. Fishes are one group of vertebrates…

Q: Are there aquatic andflying mammals?

A: Animals are the groups of multicellular organisms that constitute the Animal kingdom. They are…

Q: What are the ages of fish?

A: The Devonian time is considered as the age of fishes, this time is around 415 to 355 million years…

Q: Which do fish have instead of arms and

A: The aquatic animals have special organs to breathe in the water They also have special organs to…

Q: What is metamorphosis?

A: The amphibians and the amniotes eventually evolved from the early tetrapods. Amphibians undergo…

Q: What does the name “echinoderm” mean?

A: Echinoderms have the following characteristics- 1. They are triploblastic. 2. They are marine. 3.…

Q: How useful is the study of the nature of body cavity and coelom in theclassification of animals?

A: Animal classification is a system of grouping animals by their similar characteristics. It is also…

Q: what type of scales do bony fish and Lancets have?

A: Lancet fish, both of two types of broadly dispersed, deepwater marine fish of the class Alepisaurus…

Q: What is a radula and what is its function?  What is a mantle and what is its function

A: Given: Need to define radula and it's function Need to define mantle with it's function.

Q: What animal do you think tyrannosaurus rex would eat?

A: Tyrannosaurus rex are the large theropods.Tyrannosaurus are a bipedal dinosaur who have a huge skill…

Q: How many gill slits are present in Scoliodon?

A: Scoliodon or shark belongs to class Chondrichthyes.  Their skeletons made up of cartilage rather…

Q: How do australopithecines and Homo differ?

A: Evolution is the change of the qualities of a species of a few ages and depends on the course of…

Q: Why is the internal shell of Cephalopods significant to their adaptation?

A: Cephalopods have huge, advanced brains, and their brain-to-weight proportion is the biggest among…

Q: What is the role of elaborated cloaca in reptiles?

A: Reptiles are characterized by the presence of four limbs and uric acid as the nitrogenous waste…

Q: What is Chordate body plan?

A: The vertebrates are the largest group of chordates, with over 62,000 species living. The vertebrates…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.