Echinoderms have _____. a. triangular symmetry b. radial symmetry c. hexagonal symmetry d. pentaradial symmetry

Q: A pseudopodia, also known as a is used for O A. real foot; movement O B. real head; turning C. false…

A: Pseudopodia are arm-like projections from eukaryotic cell membranes. These projections are the…

Q: Compared to other actinopterygians, teleosts _____. reach sexual maturity later in life and live…

A: Actinopterygian refers to bony fishes which appeared during the Triassic period (50.6 million years…

Q: Fossil evidence that many saurapod dinosaurs had feathers suggests that ____. flight is an…

A: In the course of evolution Dinosaurs are the important part. So according to the fossils the size of…

Q: The difference between the nerve cord and the notochord is that the nerve cord is used _________ and…

A: Chordates are the animals which show deuterostomic development. Chordates can be further divided…

Q: Skull parts are represented in only___ of the more than 100 genera of sauropods. (A) 20 (B) 24 36 D)…

A: A clade of saurischian dinosaurs, the sauropoda is referred to as sauropods. The features of…

Q: Hadrosaur are large and strong looking, couldn’t they at least try to defend themselves from…

A: Introduction :- Hadrosaurs are the animals belongs to the phylum chordata .They have few mechanism…

Q: Monotremes all have what unifying feature? Arthropod-like pincers Placenta Ventral pouch Ability to…

A: Mammals belonging to the order Monotremata are known as monotremes. The Monotremata are the oldest…

Q: Based on similarities among forelimbs, what bones did the common ancestor of tetrapods probably…

A: Introduction : Homologous organs are those organs that have a common origin but different functions.…

Q: Amniotes are divided into three groups based on their skull mor-phologies. What are these three…

A: Amniotes are organisms whose animals have embryos that develop in amnion and chorionic and has an…

Q: Which of the following are amniotes? Choose all that apply. Fish O Amphibians O Reptiles Birds…

A: This specialised membrane structures of certain tissues formed outside of the body of the embryo…

Q: What are description of Tyrannosaurus rex, Giganotosaurus and carcharodontosaurus please don’t tell…

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

Q: The outward appearance of forams is highly variable. Other than the forams' sizes, describe other…

A: Foram species produce shells. These shells are known as tests. The tests can be divided into…

Q: What does metamorphosis mean

A: Metamorphosis involves the reactivation of the genes allowing the cells to change from one type to…

Q: Medical examination of some youths revealed in their armpits grey insects 1.0-1.5 mm in size, with…

A: Introduction: Ectoparasites are parasites that live on their hosts' outer surfaces, such as the…

Q: Scales of modern teleosts differ from the ancestral state in that they _____.     are thicker and…

A: They are the members of actinopterygians.  They are marked by the body rays on their fins.…

Q: Which of the following is not a synapomorphy of craniates?

A: Craniates are a group of chordates that includes many organisms that have a cranium or a braincase.…

Q: Animals that have an anterior and posterior end are said to be_______ . The anterior end of such…

A: Animals that have an anterior and posterior end are said to  be cephalized.  The anterior end of…

Q: Bilateral symmetry is a(n) A B C synapomorphic ancestral claws derived analogous - trait for the…

A: A phylogenetic tree is a diagram demonstrating the evolutionary connections between a group of…

Q: describe the four distinguishing characteristics of chordata a d the structural, functional, and…

A: "Since you have posted more than one question at a time, we will provide the solution only to the…

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: Which of the following represents a major advancement in the transition of tetrapods from an aquatic…

A: Tetrapods  Tetrapods are animals with four limbs. These animal are developed from aquatic animals.…

Q: The fossil cephalopod has a calcareous shell and a squid-like body that would extend out of the…

A: Anatomy is the branch of biology that deals with the study of the structure of organisms and their…

Q: eptiles came to dominate the land in the _________ Period of the Paleozoic Era.

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: Hadrosaur is May have been the only _____ dinosaurs

A: Step 1 The Mesozoic era had witnessed both rise and fall of reptiles. A large number of ruling…

Q: Cnidarians development will continue to include the stage. --- Gastrula Zygote Blastula Gamete

A: Cnidarians are also commonly known as coelenterates. They are a phylum under Kingdom Animalia that…

Q: As with the emergence of the Acoelomorpha phylum, it is common for ____ data to misplace animals in…

A: The kingdom Animalia comprises a great diversity of organisms. Acoelomorpha is a Subphylum of…

Q: Tyrannosaurus rex how can they be description of body? Are they muscular body or sturdy or stocky?…

A: Tyrannosaurus is described as the genus of tyrannosaurus therapy dinosaur. This is distributed all…

Q: Which of the following is NOT a characteristic of the exoskeleton of an arthropod? A. Always laden…

A: Arthropoda is the largest phylum in the animal kingdom and contains insects. Their bodies are…

Q: What are three most important point in Anuran’s metamorphosis, that you find the most interesting…

A: Metamorphosis is the change of shape during an animal's life. There are some destructive and…

Q: Which of the following things is/are true about this organism? Phylum Chrodata Subphylum Vertebrata…

A: This organism is Lancelet.  Diagrammatic view of lancelet internal structure. Classification of…

Q: 71.The stratigraphic range of brachiopods is ordovician to recent T F

A: Brachiopods, also known as the phylum Brachiopod, are a group of animals that live Brachiopods are…

Q: 11. The figure above illustrates how some characteristics of the horse have changed over time. Along…

A: Evolution can be defined as the change in the characteristics of a species over multiple generations…

Q: In amniotes the space around the auditory ossicles in the middle ear cavity is filled with _______.…

A: The collection of vertebrates that lays their eggs on the land instead of water, or have their fetus…

Q: Draw and describe metamorphosis in amphibians. Describe it thoroughly and do not just copy form…

A: Definition: - Metamorphosis is the process of transformation of a larvae into an miniature adult.…

Q: Skull parts are represented in only of the more than 100 genera of sauropods. (A) 20 (B) 24 36 (D)…

A: Answer :- The vast, herbivorous sauropod dinosaurs, which flourished during the Mesozoic Era, are…

Q: 1. Adult Ephemeroptera has stigma on its wings. true/false 2. Gracillariidae is a leaf-mining…

A: 1. Yes, it's true, they have pterostigma on its wings. Stigma or Pterostigma is a Dark ,more or less…

Q: TRUE OR FALSE  1. The fossil record provides a sweeping overview of the history of life over…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Compare the óverall body plan of the prawn to that of an insect like a grasshopper (see drawings…

A: Answer:  ADAPTATION: It is the power of any organism to adapt themselves in an environment. They…

Q: Fill in the blanks with synapomorphic, symplesiomorphic, or neither Mesoderm is a ___ feature of…

A: Synapomorphy refers to a character shared by two or more taxonomic groups and it is derived from…

Q: Echinoderm skeleton consists of: An internal skeleton of calcium carbonate. O a. O b. An internal…

A: Endoskeleton- The hard part which is the internal support of the structure is called an…

Q: 4. Bone probably first evolved to Choose a or b a. provide fish with jaws in order to be fearful…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

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: Vestigial structures may or may not have any function in modern organisms O True O False

A: Introduction :- Vestigial structures are anatomical structures or organs that have lost all or most…

Q: Diapsids possess a single temporal ópening in their Skulils true false Other:

A: Diapsids are a group of amniote tetrapods. Modern diapsids include lizards, snakes, turtles, birds,…

Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.