hemichordates are said to be the missing link between the invertebrates and vertebrates.

Q: These differ from the other classes of sponges in that their cells are syncytial (multinucleate and…

A: Sponges are comes under the group called Porifera. The presence of pores on their body is a special…

Q: Mindoro Black Rat (Rattus mindorensis) Explain the following taxon of this animal: Kingdom -…

A: The Mindoro dark rodent (Rattus mindorensis) is a types of rat in the family Muridae. It is tracked…

Q: Which of these does not pertain to a protostome?a. spiral cleavageb. blastopore is associated with…

A: In the animal kingdom, after the fusion of male and female gamete, a diploid zygote is formed. This…

Q: What is the tissue origin of the following: Placoid Scales Cosmoid Scales Ganoid scales Cycloid…

A: scales in fishes.

Q: h an help of neat and well-labelled diagrams, describe the differences and similarities between…

A: Amphioxus is a small marine animal that is also known as the lancelet. These are the members of the…

Q: Briefly describe the distinguishing morphological features of each of the following: eurypterids,…

A: Eurypterids, horseshoe crabs, and pycnogonids are classified under the Subphylum Chelicerata. In…

Q: A terrestrial animal species is discovered with the following larval characteristics: exoskeleton,…

A: The phylum is the division of Kindom in the process of classification of organisms in which the…

Q: Humans are members of the phylum chordata. As such they have a notochord. The notochord in humans;…

A: All the chordates possess the following diagnostic characters either in the embryonic or adult…

Q: Which of the following has indeterminate development?     Echinodermata     Nematoda…

A: This is the growth that is not terminated once a genetically pre determined structure has completely…

Q: This is a basal gnathostome more closely related to bony fishes O Dunkleosteus O Geotria O…

A: Gnathostomes meaning “jaw-mouths” are vertebrate organisms possessing jaws. The jaw development was…

Q: How do members of the phylum Chordata differ from other animal phyla? Explain in 10 sentences.

A: According to the Linnaeus system, scientists classify animals and plants based on physical features…

Q: Which of the following is a characteristic of mammals?     homodont     mammary glands…

A: Introduction Mammals:- Mammals are a group of warm-blooded vertebrate animals belonging to the class…

Q: 1. Both Lepidoptera and Diptera have proboscis. true/false. 2. Phthirapterans have large claws…

A: Answer 1 :- True.   Explanation :-  The proboscis is an elongated, tubular structure that is used…

Q: What are the ecological roles of hexapods and myriapods? Cite some examples of ecologically…

A: Introduction :- Ecology is the study of interaction among the living organisms and with their…

Q: Although ctenophorans appear somewhat similar to cnidarian medusae, the two phyla are structurally…

A: Animal kingdom deal with 10 major phyla.

Q: Why is the occurrence ofeyelids in amphibians incomparison to their absence infishes an adaptation…

A: Amphibians belong to the phylum Chordata. They are vertebrate tetrapods. This group includes frogs,…

Q: hoose which is FALSE among the following statements about the anatomy of annelids. A. Earthworms…

A: Phylum Annelids is an invertebrate it includes  segmented worms ,terrestrial and aquatic earthworm ,…

Q: Oligochaetes have     well-developed heads     chaetae for locomotion     lungs for…

A: Oligochaetae is a subclass of animals in the phylum Annelida, which is made up of many types of…

Q: Pharyngeal slits are which of the following?   Question 24 options:   a)  Openings in the…

A: Pharyngeal slit are opening in the pharynx that extend to the outside environment. In organisms that…

Q: Animal phylogenies based on molecular and

A: 1) Phylogenetic trees basically reconstructed from different genes in the same organism. However it…

Q: Based on the anatomy and biological design of Bulbasaur given in the illustration, will it survive…

A: It is assumed that some big meteorite crashed into Earth, changing the climatic conditions so…

Q: Please choose all the correct statements regarding early chordates. Amphioxus has all four defining…

A: Amphioxus has all four defining chordate characteristics as an adult- This statement is Correct…

Q: An arthropod body is described as having three key features: A segmented body, an exoskeleton, and…

A: Arthropods are found in all parts of the world in a wide variety of environments. This phylum…

Q: Which of the following is NOT an axial skeleton in the frog? urostyle mandible sternum ribs

A: Introduction:- The axial skeleton is comprised of the 80 bones that make up the body's central core.…

Q: In terrestrial arthropods these features represent adaptations to a terrestrial existence:…

A: Arthropods are a group of creatures with chitinous exoskeletons and jointed appendages. Terrestrial…

Q: Why did invertebrates evolve structures for protection?

A: INVERTEBRATES Animals which have notochord are called Chordates , and the Chordates having…

Q: Why was the medusa stage lost in some cnidarians? Do you think it is more advantageous

A: Solution : In the phylum Cnidaria, which includes jellyfish and sea anemones, polyp and medusa are…

Q: Name one unique feature of the Arthropoda that is visible on honey bees. Also, can you guess what…

A: Introduction :- Arthropoda are an invertebrate phylum under the kingdom Animalia and it is the…

Q: which of the following features does not distinguish humans as a member of phylum chordata as…

A: Chordata are the group of animal kingdom which includes three groups that are urochordata,…

Q: Compare the whole specimens and cross-sections of Ascaris and Dugesia. How would you differentiate…

A: Ascaris is an example of Nematoda and Dugesia is an example of Platyhelminths. Both are phyla of…

Q: All of the following are clades of amphibians EXCEPT O Urodela Apoda Tuataras Anura

A: Amphibians are the kinds of cold blooded and vertebrate animal that can sustain both on land and…

Q: What animal is this? nemertean polychaete tardigrade arrow worm phoronid

A: Tardigrade : They are also known as water bears. They are 8 legged microorganisms. They are known to…

Q: Describe the structural differences between the pleopods and the pereiopods up the prawn. What…

A: Pereiopods are primarily walking legs and are also used for gathering food.They are also the ten…

Q: Of the following, which includes chordates that are NOT vertebrates? O Myxini Echinodermata…

A: Answer : Option A & D are correct :  Myxini & Urochordata

Q: Explain the relationship between the Vertebrata and these invertebrates.

A: The classification of phylum chordata is divide into three subphylum, i.e., Urochordata (Tunicata),…

Q: There is current controversy about which group is sister to the rest of the animals. Which two of…

A: The animals are those organisms who are made up of animal cells. They don't have cell wall around…

Q: In an ancestral chordate like the lancelets the Pharyngeal slits function as whereas in humans the…

A: Pharyngeal slits Pharyngeal slits are a third chrodate feature, these are openings between the…

Q: /hich of the following features is not unique to the Vertebrate

A: A vertebrate is an animal with a spinal cord surrounded by cartilage or bone. They include birds,…

Q: Which of the following statements regarding dipnoi (lungfish) is true?     amniotes share a more…

A: Lungfish are freshwater  rhipidistian vertebrates belonging to the order Dipnoi. Lungfish are best…

Q: Which of the following is NOT a description of the Arthropods? Exhibits true segmentation in the…

A: Introduction Arthropods:- These are invertebrate animals having an exoskeleton, a segmented body,…

Q: Which of the following animal groups adopted a sedentary mode of life as adults? O P. Nematoda O P.…

A: sedentary means living in the same place for the whole of one's life; it does not indicate migratory…

Q: Describe the process of nuerological development of a member of phylum Cnidaria.

A: In this question, we have to answer the process of neurological development of member of phylum…

Q: The clade Therapsida technically includes modern mammals * true false

A: Most of the therapsids contain reptilian ancestors of mammals. This clade includes a variety of…

Q: Although nematode worms and arthropods do not appear related, they, in fact, are. One similarity…

A: Animals (likewise called Metazoan) are multicellular eukaryotic creatures that structure the natural…

Q: Which of the following is not a characteristic found in sea stars? Walking on tube feet An…

A: Echinodermata  All are marine. Generally live at bottom and slow moving. Body shape is star like,…

Q: For context: This activity will examine the classification of invertebrates and the methods used to…

A: Invertebrates: the animals lacking backbones and usually devoid of internal skeleton system, comes…

Q: Which one of the following arthropods has biramous appendages?     scorpion     mite…

A: An arthropod is an invertebrate animal having an exoskeleton, a segmented body, and paired jointed…

Q: Which of the following is NOT one of the two tissue layers of a cnidarian? A. outer epidermis B.…

A: The germ layers are responsible for production of different tissue types in living organisms.…

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.