Why did giant dragonflies occur during the Carboniferous, but not now?

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: Peramorphosis can occur when a feature, such as horns, _in a descendent than in its ancestor.

A: Heterochrony is the difference in time or pace of development as compared to an ancestor. Because…

Q: In what way was the evolution of eukaryotic cells linked to the increase in the oxygen concentration…

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

Q: JM. Cavanihac A 0.1 mm

A: Some animals go through metamorphosis to become an adult. A larva is a distinct juvenile form of…

Q: Was Archaeopteryx the firstbird?

A: Archaeopteryx is a fossil. This is an extinct species; it does not exist anymore. The fossil was…

Q: What kingdom does Phylum Chordata belong to? A. Animal Kingdom B. Eubacteria Kingdom C. Protist…

A: Introduction  kingdom is a taxonomic level made up of phyla, which are more compact groups (or…

Q: Explain how to differentiate a sawfly from something belonging to another order of insects. Could…

A: Sawflies are the insects. The suborder of the Symphyta within the order Hymenoptera alongside ants,…

Q: What problems were associated with colonizing land during the evolution of vertebrates?

A: Life on Earth first developed in quite a while over 3.5 billion years prior, and even today most of…

Q: What is the term for bits of rock and dirt? O A. Mesozoic O B. Half-life O C. Sediment O D.…

A: An MCQ has been asked. Have to name a term for bits of rock and dirt.

Q: At the end of which geological time period did the Starfish become extinct?

A: Biodiversity is diversity of various living organisms on the planet that it contains different types…

Q: How is fossil age measured

A: Relative dating and absolute dating are the two basic approaches for establishing the age of a…

Q: Are birds more closely related to extinct branches of reptiles or to mammals?

A: Birds belong to the group of warm-blooded vertebrates and falls in the class of Aves, which has…

Q: What does metamorphosis mean

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

Q: How do reptile eggs differ from amphibian eggs? Why is this important?

A: The egg is the female reproductive unit and it is produced by the oogenesis process. It is haploid…

Q: What era did Australopithecus afarensis evolve?

A: It is required to identify the era in which Australopithecus afarensis evolve.

Q: What is the “Cambrian explosion,” and why is it significant?

A: Cambrian period refers to the initial geological period of the Palaeozoic Era as well as Phanerozoic…

Q: Which class of tetrapod animals famously experienced an adaptive radiation into previously unused…

A: The oldest near-complete tetrapod fossils, Acanthostega and Ichthyostega, date from the second half…

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: When did the Ediacarans live, and what were they like?

A: The Ediacaran organisms lived during the Precambrian supereon approximately 543 to 600 million years…

Q: How was the name of different cone snail species decided

A: The Conus Gloriamaris or 'Glory of the Sea Cone' as it is more commonly known, is one of the most…

Q: Why are robber crabs land invertebrates?

A: Robber crab which is also known as coconut crab, scientific name Birgus latro , it is a species of…

Q: In the frog embryo, convergent extension elongates the notochord. Explain how the words convergent…

A: The embryo is known to be the early stage of development of a “multicellular” organism. The…

Q: How might insects’ wings have contributed to their diversity and abundance?

A: In ecology, biodiversity is defined as the biological variations among various species in the…

Q: What is the function of the snail shell used by the hermit crabs? Do you think it could survive…

A: Hermit crabs, distributed worldwide, occur in coastal waters with sandy or muddy bottoms, and…

Q: The large central opening in the poriferan body is called the _____. a. emmule b. picule c. stia d.…

A: The term biodiversity refers to the diverse variety of life present on the earth. As biodiversity…

Q: What is a plausible scenario for evolution of wings and flying insects?

A: Evolution is the natural process where is a change in the heritable characteristics of biological…

Q: Why is animal evolution during the early Cambrian referred to as an “explosion”?

A: The evolution during the early Cambrian referred to as an explosion. Here we will discuss why it is…

Q: Which group of echinoderms usually posses pentameric antimeres but some species may have more? A.…

A: Echinodermate's term was coined by J. Klein. These are exclusively marine organisms falling in the…

Q: Why are horseshoe crabs in the same subphylum as spiders

A: Subphylum Chelicerata is an ancient group of arthropods, which include about 75000 species. Their…

Q: Why do very few animals eat sponges?

A: Sponges, the individuals of the phylum Porifera, are a basal animal clade as a sister of the…

Q: In what important ways did invertebrate life change between Ordovician time and Devonian time?

A: Evolution is a process of slow and gradual change over a period of time. There are many different…

Q: Which terrestrial vertebrate group is extremely rare in deserts?

A: Vertebrates are organisms which possess backbone and notochord. They are large animals which…

Q: earthworms and leeches belong to which phylum?

A: R.H. Whittaker grouped various organisms and proposed five kingdom classification namely: Protista,…

Q: What is metamorphosis?

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

Q: The first fossils were of 1. amoeba 2. trilobites 3. yeast 4. stromatolites

A: The history of palaeontology is the study of the fossil record left behind by living species in…

Q: Sponges diverged from protists probably years ago. 6 million 3,000 600 million 200,000

A: Protista are colonial unicellular eukaryotic organisms. They are mostly aquatic. This Kingdom…

Q: What was the “Cambrian explosion” and how might you explain it?

A: Introduction  Cambrian explosion event was occurred nearly 541 million years ago during the Cambrian…

Q: What do fossil tetrapods tell us about the transition from water to land?

A: The animals that have 4 limbs are known as tetrapods and constitute the superclass Tetrapoda which…

Q: Fossil records had given scientists a glimpse of the past, to what extent these fossil records…

A: Fossils are the preserved remains or traces of animals, plants, and other organisms from the past.…

Q: Considering phylogenies can the pigeon be a reptile (a member of clade Reptilia) as well as a…

A: Answer : PHYLOGENY is the history of the evolution of a species or group , especially in reference…

Q: Q36

A: The body appears to be dorsiventrally  flattened. The specimen appears to be in brown colour and…

Q: What features distinguish sponges, cnidarians,protostomes, and deuterostomes? Place these features…

A: The animal kingdom is classified into various phylums such as Porifera, Coelenterata (Cnidaria),…

Q: to what kingdom do the termites belongs?

A: The termites are detritus feeders or detritivores. They feed on dead plants and trees. They obtain…

Q: What are the similarities and differences between insects that go through com- plete metamorphosis…

A: The vast majority of people are acquainted with complete metamorphosis in childhood as a butterfly…

Q: Describe a reason for the hypothesis that the ancestor of eleuthero-zoan groups was a radial,…

A: Eleutherozoans are a subgroup of echinoderms. Most modern day echinoderms have upward facing mouths…

Q: What is the "Cambrian Explosion" and why is it significant?

A: Cambrian period refers to the initial geological period of the Palaeozoic Era as well as Phanerozoic…

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.