What evidence is there that dinosaurs brooded their eggs and tended their young long after they hatched?

Q: what percentage of sea turtles were around during the jurassic period?

A: Introduction : Geological time scale gives a picture of the events which has taken place in the…

Q: How do  invertebrate chordates differ from vertebrate  chordates? Elaborate.

A: Introduction A Chordate Is A Member Of The Chordata Phylum. At Some Point During Their Larval Or…

Q: What are some characteristics that allowed for the evolutionary success of arthropods?

A: Introduction Phylum Arthropoda, the largest in the animal kingdom, which includes familiar forms…

Q: What is one characteristics that separates chordates from all other animals

A: Most chordates are creatures with backbones/ spines. These reach from little fish to whales. They…

Q: How Long Might Neanderthals Have Co-Existed withModern Humans (Homo sapiens)?

A: homo sapiens and neanderthals shared common ancestry 0.5 million years ago and somewhere a split…

Q: Do amphibians have amniotic eggs?

A: No amphibians does not have amniotic eggs.

Q: What evidence suggests that four-legged animals came from fish?

A: Evolution is a slow process which explains that how the species changes with time to survive in…

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: What is the evolutionary relationship of Neanderthals to Homo sapiens?

A: While a modern human who lived about 40,000 years ago was found to have about 6-9 percent…

Q: What phyla of animals are most closely related to the chordates?

A: Chordates belong to the phylum Chordata. The Chordates in their full life cycle have one of the…

Q: What caused the extinction of the dinosaurs?

A: Dinosaurs represent the giant reptiles that evolved on earth 245 million years ago. They come under…

Q: You decide that it is a eutherian rather than a marsupial. How do you know based on its…

A: A marsupial is a mammal that raises its newborn offspring inside an external pouch at the front or…

Q: According to the current hypothesis, when did most major groups of animals evolve?

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

Q: Identify the geologic era and periods in which chordatesand the first vertebrates appear.

A: The chordates are first found in cambrian period which is 530 million years ago

Q: how did bat wings evolve from arms?

A: Evolution is the process of change in the features of an organism with time. It is based on the…

Q: Which group of hadrosaurs had crests?

A: Hardradosaurids means bulky lizards. They were the family of herbivores dinasaurs. They were the…

Q: What physical traits made scientist  believe that neanderthals adapted to the cold of the Ice Age in…

A: Neanderthals (Homo sapiens neanderthalensis) are the group of humans that emerged during the…

Q: What traits or innovations allowed movement of animals onto land, and why might these traits have…

A: Physical or behavioural adaptations are possible. A physical adaptation is a form of structural…

Q: According to the latest researches in Physical Anthropology, what is the relationship between…

A: Physical anthropology is also known as biological anthropology. It is a branch which focuses on the…

Q: How did the vertebrate appendage evolve into the limbs we find so useful today?

A: The tetrapods consist of the a pair of forelimb and a pair of Hindlimb and these are supported by…

Q: How are animals as delicate as nemerteans able to function as predators?

A: Nemerteans are described as free-living, thin, and extensible worms that are mainly present in…

Q: What is a vertebrate? 41. What were the first organisms to live on land? 42. Know the evolution of…

A: Lemurs, lorises, tarsiers, monkeys, apes, and humans are members of the order Primates of the class…

Q: Threespine sticklebacks that invaded freshwater lakes have lost their pelvic spines. What other…

A: Threespine sticklebacks (Gasterosteus aculeatus) are commonly found in the ocean. They are…

Q: what is the major difference between turtles and tortoise?

A: The domain Eukarya includes the kingdom Animalia. All animals are classified under the kingdom…

Q: What group of animals is thought to have moved onto land to become the first amphibians?

A: Frogs, turtles, toads, skinks, and caecilians are all members of the class of cold-blooded…

Q: Can fossils bridge the evolutionary gap between fish and tetrapod vertebrates?

A: Phylogeny is the branch of biology that studies phylogenetic analysis. A phylogenetic analysis is…

Q: what  is a carapace?

A: Numerous animals have a protective covering on the outside of their bodies. Some of the animals with…

Q: Do amphibians have directdevelopment?

A: Development process involves the growth of a multicellular organism and also increases the…

Q: How did HOMO successfully expand around and out of AFRICA?

A: ANSWER;- - These environment shifts, set off by the wobble of Earth's pivot, made green hallways…

Q: Distinguish ornithischian and saurischian dinosaurs based on their hip anatomy.

A: Dinosaur is any of group of extinct, frequently very large carnivorous or herbivorous archosaurian…

Q: What are the differences between vertebrates and the other chordates?

A: Organisms are divided into two categories- Vertebrates and Chordates. Vertebrates have vertebral…

Q: what do fossils tell us about the evolutionary history of the animal kingdom?

A: The traces or remains of an organism that once lived on Earth is termed as fossil. Fossils somehow…

Q: are birds such as cassowaries and ostriches the closest links we have to velociraptor dinosaurs or…

A: Aves is the name of other class which birds belong and its its forelimbs are modified into wings .…

Q: How would you distinguish pelycosaurs, early therapsids, cynodonts and mammals?

A: Answer of the question given below...

Q: What changes in egg design allowed reptiles to lay egg on land?

A: The theory of evolution by natural selection suggests that due to the dissimilarities in their…

Q: In what present-day country was the oldest known fossil of a primate found?

A: Fossils are the traces, remnants or impressions of an organism of past geologic ages that has been…

Q: what is a homologous feature shared by ostriches and amphibians?

A: In evolutionary biology, the similarity between organisms is of two types: analogy and homology.…

Q: How many years ago did amphibians appear?

A: The amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. The different species…

Q: What characteristic defines a chordate who is also a vertebrate?

A: The animal kingdom is divided into two phyla- Chordata and non-chordata. The phylum Chordata…

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: Name three characteristics that set vertebrates apart from other animals

A: Animals are defined as a living organism that will feed on organic matter and will typically have…

Q: During what era did the dinosaurs become extinct.

A: In evolution, geological time scale is used to identify the evolution of different animals. It uses…

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: Distinguish between ostracoderms and placoderms. What important evolutionary characters first…

A: Vertebrates comprise all species of animals within the subphylum Vertebrata. A vertebrate have a…

Q: In what ways were therapsids adaptively superior to the amphibians and reptiles that preceded them?

A: Therapsids are the ancestors of present-day mammals and their related ancestors. They represent an…

Q: Elaborate about the origin and evolution of earlier vertebrates?

A: Vertebrate is considered a subphylum in the kingdom Animalia, which comprises animals with the…

Animal Diversity

Nematodes are commonly known as roundworms. They are free-living, very tiny organisms. They have an elongated and tubular body. These organisms have a nervous system and are mostly act as parasites to both animals and plants.

Platyhelminthes

Platyhelminthes are also known as "flatworms" because as they are dorsoventrally flattened from head to tail. They are invertebrate, soft-bodied, acoelomate, unsegmented and have bilateral symmetry.