Explain how heterochrony may have been involved in the evolution of 1) pteropod gastropods, 2) the byssal threads of mussels 3) ascidians and larvaceans and 4) ascidians and vertebrates.

Q: . Eupleciella - give its scientific and common name, classify up to order level and list the…

A: Based on the presence of a true nucleus, there are two types of cells found, prokaryotic cells and…

Q: examine the morphology of a millipede and a butterfly.  What characters do they share? Notice how…

A: As per the evolution of organisms, the organisms are divided into various phyla. These are a group…

Q: Flatworms have no coelom. Recent gene sequencing shows that their closest relatives are the rotifers…

A: Coelom is the fully functional body cavity that is lined by mesoderm. Within the coelomic cavity,…

Q: Which of the following statements is true? --Sea stars are dioecious possess dermal branchiae and…

A: Sea stars are dioecious possess dermal branchiae and they have two stomachs.True: Sea stars are…

Q: Characters Sponge Jelly X X Cells with flagella Bilateral symmetry Mesoderm Head develops first Anus…

A: The system of naming and categorising animals is known as taxonomy. The study of links between…

Q: The cnidaria, jelly fish, are the first organisms to exhibit? a) an ectoderm layer b) endoderm layer…

A: The earliest animals with muscles and nerves that could produce behavior were cnidarians.…

Q: Why and how do you think the phenomenon of periodicity in filiarial worms evolved?

A: Microfilaria is the early Juvenile stage in many of the worms belonging to the group nematodes.…

Q: create a cladogram summarizing the phylogenetic relationships among the different Phyla.

A: A cladogram is a diagram that shows the evolutionary relationships between organisms or groups of…

Q: Is reproduction in sponges sexual or asexual? What is the evolutionary advantage of the occurrence…

A: Budding, gemmation, or fragmentation (regeneration) are examples of asexual reproduction in sponges,…

Q: Kingdom: Animalia Phylum: Chordata Order: Dipnoi Suborder: Ceratodontoidei Family: Neoceratodontidae…

A: Neoceratodus forsterai is the only surviving lungfish species and is very old making it a living…

Q: In the tree below, the group in the red box is Libytheinae Danainae Opolyphyletic a clade…

A: Phylogenetic tree is the evolutionary tree, which is a two dimensional graph showing evolutionary…

Q: Which group of flatworms are primarily external parasites of fish?a. monogeneansb. trematodesc.…

A: The flatworms are acoelomates that can be either parasitic or free-living. The free-living forms act…

Q: How has the abundance and diversity of Bivalves clade changed over time? –How did the synapomorphies…

A: The Bivalves clade is also known as the class Bivalvia, which is made up of a diverse group of…

Q: Which of the following exhibits embryonic development by the protostome pathway?

A: Embryo development is the term used to describe the many stages of embryo development. Animals and…

Q: What is the potential impact of horizontal gene transfer on the reconstruction of animal phylogeny?

A: Horizontal gene transfer (HGT) refers to the movement of genetic material between organisms in a…

Q: What era did Australopithecus afarensis evolve?

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

Q: Indicate the Phylum, Class, Order, Family, Genus and the species name of any one grasshopper of…

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

Q: An organism classified in phylum Mollusca that is a predator with tentacles, a brain and complex…

A: Note: We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: Why are embryological features important for distinguishing the major groups of phyla?

A: Taxonomy is the branch of biological sciences that deals with the identification and classification…

Q: How does tracing diversification of lice help trace the dispersal of modern humans?

A: The human lice (Pediculus humanus) is an blood sucking parasites (ectoparasite) that inhabits in the…

Q: Create a body plan table (Insert → Add Table) for the following animal phyla: Porifera, Cnidaria,…

A: Coelom can be defined as the principal body cavity that is present in most animals. It is located…

Q: Make a concept map about Subphylum Myriapoda and its classes (Chilopoda, Diplopoda, Pauropoda,…

A: Insects, spiders, crustaceans, and their relatives make up this huge phylum of invertebrate…

Q: In the following relationship tree, which of the organisms are most closely related?

A: Phylogenetic trees give us an idea about the relationship between different organisms. A…

Q: previously undiscovered sea creature that appears to represent a new phyla. It happens to have…

A: The mouth develops first, and it goes through several larval stages in which it molts and regrows…

Q: Describe the genus Australopithecus.

A: Australopithecus is an extinct group of primates closely related to modern humans,which is actually…

Q: During a survey you spot a soft bodied animal enclosed in a two-piece shell. How can you determine…

A: Humans rely heavily on the marine environment and its inhabitants. We rely on the environment that…

Q: Make a table showing the similarities and differences of the 4 phyla in terms of the different organ…

A: Nematomorpha are a phylum of parasitoid animals superficially similar to nematode worms in…

Q: If we insisted that all groups must be categorized and named so that taxonomic ranks/names always…

A: The study of the evolutionary history and links of living species is known as phylogenetics. It…

Q: What is the significance of having an invariant cell lineage of the nematode,

A: Caenorhabditis elegans is a model organism which help us to study various human diseases. This worm…

Q: clitellum is the: Hirudina Cestoda Oligochaeta Platyhelminthes Permoclitellata All lack a permanent…

A: Clitellum is a glandular and unsegmented region of earthworms. It is situated near the head region…

Q: WORD FILL INS a) All chordates as embryos have the start of gills- what are these called? ____…

A: Vertebrates, tunicates, and lancelets are all members of the Chordates (Chordata) family of animals.…

Q: insect'

A: Insect are small animal with six legs, two pairs of wings and a body which is divided into three…

Q: DISTINGUISHING Match the distinguishing features (on left) to their appropriate taxon (phylum or…

A: Answer:- Phylum Porifera = Spicules The sideroblasts in the Porifera secretes spicules whereas the…

Q: What can you conclude or your key learning about the classifications of major invertebrate phyla…

A: A dichotomous key is an important scientific tool, used to identify different organisms, based the…

Q: Differentiate between Phylum Porifera and Clade Eumetazoa. -Poriferans are only haploid during…

A: The objective of the question is to differentiate between Phylum Porifera and Clade Eumetazoa, two…

Q: T or F a)Quadrula and Radiatula each have glochidia that are unhooked – this must be a result of…

A: INTRODUCTION Quadrula is a genus of freshwater mussels, also known as pocketbook mussels. They are…

Q: other mya 01 Timematodea euphasmatodeans Nanophyllium Microphyllium Chitoniscus Phyllium no 20 <…

A: A cladogram is a phylogenetic tree that displays the evolutionary relationship between organisms. A…

Q: Which of the following statements regarding the diversification of animals is supported by the…

A: Biodiversity improves ecosystem productivity by allowing each species, no matter how little, to play…

Q: Enumerate features of Caenorhabditis elegans that make it a valuable model system for biologists.

A: Caenorhabditis elegans is a free-living transparent nematode about 1 mm in length that lives in…

Q: examine the morphology of a millipede and a butterfly.  What characters do they share? Notice how…

A: The phylum Arthropoda are invertebrates that have segmented bodies covered by an exoskeleton with…

Q: What are the main classes into which the phylum is divided? What are some examples of each and in…

A: Taxonomic classification is the method of classifying different organisms based on their…

Q: Complete the following table correctly regarding the number of PAIRS of antennae usually found in…

A: Antennae are the sensory appendages found in various arthropods, including insects, crustaceans, and…

Q: Phylogenetic tree of some deuterostome relationships 2 embryo develops anus first, mouth second 5 6…

A: Hope you understand.... Please do rate..... Thankyou :)

Q: What is the advantage to the segmentation that is exemplified in the Phylum Annelida?  Check all…

A: The question is asking about the advantages of segmentation in the Phylum Annelida, a group of…

Q: Suppose you discover a new species of animal that does not have body segments, but is triploblastic,…

A: The question is asking to identify the phylum of a newly discovered species based on certain…

Q: What are two features that put the octopus in the phylum Mollusca?

A: Mollusks are defined as a large group of invertebrates. They generally have soft body, also the…

Q: Which of the following is true about the phylogeny of birds and reptiles.   Question 35 options:…

A: The study of relationships between various groups of organisms and their evolutionary development is…

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.