Monotremes are very primitive mammals because: O a. They lay eggs. O b. They do not provide milk to their young. Oc. They breathe using gills. O d. They have a cartilaginous skeleton. O e. They have no lower jaw.

Q: Vertebrate jaw bones evolved from____ . a. gill supports b. ribs c. scales d. ear bones

A: Vertebrate jaw by A jaw allowed vertebrates to use a large variety of food and interact in predation…

Q: Which of these is not a feature of amphibians?a. dry skin that resists desiccationb. metamorphosis…

A: Amphibians are little vertebrates that require water, or moist surroundings, to survive.

Q: A major difference between birds and other reptiles is that birdsa. produce a shelled egg. d. care…

A: The group of heterotrophic, multicellular, and eukaryotic organisms that do not show the presence of…

Q: Although many mammals have binocular vision, the anatomical adaptation(s) that set primates apart…

A: The order Primates belong to the class Mammalia. The animals belonging to this group are lemurs,…

Q: Why do whales possess a femur and a pelvis? A. They descended from organisms that walked on land. B.…

A: Introduction:- There are some parts of the body that no longer serve a role, yet did in our…

Q: How do mammals differ from birds, and what adaptationsdo they share?

A: Birds belong to the class Aves. It has a spindle shaped body with head, neck, trunk and tail. They…

Q: Which adaptation makes it possible for an animal to live its whole life cycle on land?

A: The correct response to this particular question will be, C. amniotic eggs.

Q: The evolution of which of the following features of mammals is hardest to trace through the fossil…

A: Fossil records are the remains of dead organisms that remained intact in various layers of soil in…

Q: Snakes, turtle, lizards and crocodilesfalls under which category of animals?A. Pisces…

A: The animals are the most abundant living organism that are found in almost every habitat. They have…

Q: A body cavity fully lined with tissue derived from mesoderm is called a______ . a. coelom c.…

A: Mesoderm can be defined as the germ layer that is present in animal embryos  will give rise to the…

Q: What internal structure does this animal use to bring in oxygen and release carbon dioxide? O A.…

A: Dolphins are mammals. They have three ear bones, and they have hair at some point during their life…

Q: Mammals are distinguished from other animals based ona. size and hair type.b. mode of…

A: Mammals belong to the group of vertebrate animals in which the young ones are nourished with the…

Q: Australopiths are_______ . a. a type of monkey c. extinct hominins b. wet-nosed primates d.…

A: Australopiths belong from Australopithecus, which evolve from 4.18 to about 2 million years ago

Q: Which of the following characteristics is/are associated with amphibians? (a) amnion (b) placoid…

A: Answer- Amphibian is a class of animals that are the part of chordates and they are the first…

Q: Herbivorous mammals are missing one type of teeth: O a. Premolars. O b. Molars. O. Incisors. O d.…

A: Herbivores have long, flat molars (back teeth) with rough surfaces for breaking down tough plant…

Q: Unlike bony fishes, amphibians havea. ears. b. jaws. c. a circulatory system.d. a heart.

A: The group of eukaryotic organisms that are heterotrophic and multicellular is called animals. There…

Q: Amphibians evolved from which type of ancestral fish?a. sea squirts and lanceletsb. ray-finned…

A: Amphibians evolved from lobe finned fishes as ancestral fish.

Q: Segmentation, first seen in annelids, allows evolutionary advantages bya. allowing more fluid…

A: The segmented body is the most noticeable of the annelid phylum's identifying characteristics. The…

Q: Both cartilaginous and bony fishes have_ a. jaws d. a swim bladder b. a bony skeleton e. a…

A: The name vertebrate comes from the Latin word vertebrae, which refers to the spine's bones. Animals…

Q: defining trait found in chordate embryos

A: Answer: Defining characteristics of chordates: In chordates, four common features appear at some…

Q: Arthropods are the first phyla to possess: A)a brain B)an exoskeleton C)a complete digestive…

A: The organisms belonging to the phylum Arthropoda are characterized by the presence of pairs of…

Q: The formation of the neural plate is induced by the ….? Group of answer choices a. notochord b.…

A: The neural plate that has formed as a thickened plate from the ectoderm, which is induced by the…

Q: According to the fossil record, what did the common ancestors of all tetrapods (four-limbed animals)…

A: Modern day tetrapods includes including whales, lizards, humans, and birds, and a number of other…

Q: Scientists used to think that all dinosaurs were large and slow-moving. Which discovery overturned…

A: Fossils of pterosaurs confirmed that these reptiles had hollow bone and wings: One of the most…

Q: What does APODA mean? O A. Without true bone B. Without jaws C. Without teeth. O D. Without legs E.…

A: The term poda is used as a suffix in the name of the class of organisms that have limbs or legs.…

Q: Prosimians face competition from more advanced primates, so lorises in Asia and Africa are tiny and…

A: Prosimians are a group of primates that includes all living and extinct strepsirrhines, the…

Q: Both cartilaginous and bony fishes have______ . a. jaws d. a swim bladder b. a bony skeleton e. a…

A: The term vertebrate is derived from the word vertebrae, which refers to the bones that make up the…

Q: New World monkeys_____ . a. lack a tail c. are dry-nosed primates b. are bipedal d. include human…

A: The new age monkey can be classified in five groups. Callitrichidae, Cebidae, Aotidae, Pitheciidae,…

Q: Animals with bilateral symmetry O A) are usually very slow-moving organisms. B) are relatively…

A: A large number of creatures, on the other hand, have a distinct symmetrical form. Animals have four…

Q: ambulacral grooves are present in which animals below? a. a unified skeleton b. no madreporite…

A: Ambulacral grooves are usually found in the starfish which is filled with fluids and contains…

Q: Which of the following occurs only in chordates O A. notochord O B. pharyngeal gills O C. dorsal…

A: All options are correct . chordates have all these .

Q: Which of the following occurs only in chordates O A. notochord B. pharyngeal gills C. dorsal hollow…

A: Notochord and dorsal hollow nerve cord found exclusively in chordates.

Q: Which of the following occurs only in chordates A. notochord B. pharyngeal gills O C. dorsal hollow…

A: Chordata is the phylum of the animal kingdom that includes a large number of animal species,…

Q: The largest group of vertebrates would De the birds. mammals. osteichthyans. insects. DO00

A: Vertebrates is a group of chordates with a well developed vertebral column. In this group, the…

Q: This West Indian manatee (Trichechus manatus) is an aquaticmammal. Like amphibians and reptiles,…

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

Q: Living vertebrates can be divided into two majorclades. Select the appropriate pair.(A) the…

A: Chordates are characterised by the presence of notochord. They can be classified into vertebrates…

Q: Which of the following is not an anthropoid? a. Lemurs b. Monkeys c. Apes d. Humans

A: Lemurs are not an anthropoid.   Anthropoids include monkeys, apes, and humans. The anthropoid means…

Q: Which of these is a tetrapod that is NOT an amniote? A. Ostrich B. Shark C. Rattlesnake D.…

A: Answer D. Salamander

Q: The similarity in bone structure and arrangement between cats and bats suggests that Humerus -…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: Members of Chondrichthyes are thought to be descended from fishes that had ________. a. a…

A: Sharks, rays, and skate, as well as sawfishes and a few handful fish species known as chimaeras, or…

Q: [ Select ] * in cartilagenous fish are thought to have evolved from gill arches and the v [ Select ]…

A: Chondrichthyes is a class that contains the cartilaginous fishes: they are jawed vertebrates with…

Q: Which of the following would be homologous to human forearms? A A bat's wing B An insect leg C) An…

A:

Q: According to Matthew Baron, the only group of dinosaurs that was composed entirely of…

A: Triassic Period was the first period of the Mesozoic Era and during which the first dinosaurs…

Q: In a comparison of birds and mammals,the condition of having four limbs is(A) a shared ancestral…

A: Two or more organisms are recalled homologous if they have the common ancestor. The organisms that…

Q: Which statement is true of chordates? O members of chordata are all in the same genus O all…

A: Chordates are bilaterally symmetrical, coelomic, deuterostomic animals with a well-defined…

Q: Which would NOT be considered one of Gregory's basic patents of the vertebrate body plan? a. spinal…

A: Animals are divided into several phylums with different features of body organization and also the…

Q: The Haversian canal pattern in dinosaurs suggests that they O A. were poikilotherms B. were similar…

A: Haversian canals are the channels found in bones when the cells replaces the bone with new material.…

Q: Until recent discoveries suggested otherwise, animals existing before the Cambrian period were…

A: Cambrian explosion took place nearly 541 million years ago in the Cambrian period. Fossil records…

Primate evolution

Primates are a relatively new species and first appeared in the fossil record nearly 55 million years ago. They may have originated as far back as the cretaceous period. Their fossils were observed in North America, Asia, and Europe. Long before the first monkeys and their prosimian relatives developed, most animal species thrived and died. The first primates did not exist until about 50-55 million years ago, even though the planet is 4.54 billion years old and the first life goes back at least 3.5 billion years. Dinosaurs had been extinct for 10 to 15 million years when this happened.