What is the function of thevitellus in the vertebrate egg?How are these eggs classifiedaccording to the amount ofvitellus within them?

Q: Reproduction in marine pelagic fishes and in benthic freshwater fishes is distinctively different.…

A: INTRODUCTION: Freshwater fishes and marine fishes reproduce distinctively as they both live in…

Q: How does paurometabolous metamorphosis differ from hemimetabolous metamorphosis?

A: The class of insects undergoes morphological and biological changes after birth through the process…

Q: Are all of the organ systems fully developed in a free- swimming larva? Which organ systems are…

A: There are some major organ systems in the body of the animals. These organ systems have a specific…

Q: Is the degenerating blastocoel visible in the frog gastrula?

A: FROG GASTRULA:         The initial stage of multicellular embryo comprises of two or more germinal…

Q: What are the types of enzymes found in virions and their functio

A: Virion : The complete , ineffective form of virus outside a host cell , with a core of RNA and…

Q: What is a nauplius? What is the difference between direct and indirect development in Crustacea?

A: The ear is divided into the inner ear, middle ear or ear canal and the inner ear. The outer ear…

Q: What is mechanicaldigestion? In molluscs,arthropods, earthworms, birdsand vertebrates, in…

A: The processes of digestion includes - ingestion, propulsion, mechanical or physical digestion,…

Q: What is hypopharynx in cockroach?

A: Cockroaches are of ancient lineage and  have close resemblance with Insects so are known as tropical…

Q: Compare the features of “Ardi” with those of “Lucy.”

A: The fossils belong to have been found for more than 6,000 individuals along with the rapid footstep…

Q: With regard to early cleavage in the sea urchin, is the entire zygote involved in early cleavage

A: Introduction:- A sea urchin is a spiny marine creature with a globular body and a radial arrangement…

Q: Why can the amphibiancirculation be classified asdouble and incomplete?

A: The system which is primarily meant for the circulation of substances through body fluids is…

Q: ''In the early cleavage stages, when the embryocannot yet feed, the developmental program is driven…

A: The series of cell divisions that occur in a fertilized egg as it begins t develop into embryo is…

Q: Nematodes and arthropods both (develop an anus from the blastopore formed during…

A: Nematode and arthropods fall under one same ancestor clade i.e. Ecdysozoa.  Nematodes are roundworms…

Q: Is there a respiratory pigment in the annelid blood?

A: The annelids are also referred to as the segmented worms. Some examples are leeches and earthworms.…

Q: After the morula stage whatis the next stage? What is themorphological feature thatdefines this…

A: The process of post fertilization occurs after the development of zygote i e., after the fusion of…

Q: In a developing chicken embryo, What is the fate of the post anal gut?

A: Evolutionary developmental biology is considered a new norm in evolutionary biology. It arose from…

Q: What classes of mammalian proteins are produced bybiotechnology? How are the genes for such…

A: Answer: Introduction: Many mammalian proteins are produced by recombination DNA technology. In which…

Q: Why we disect an invertebrate from its dorsal side but a vertebrate from its ventral side?

A: The invertebrates belong to phylum Protozoa, Porifera, Coelenterata, Platyhelminthes, Nematoda, etc.…

Q: what is the symmetry of the organism navicula? explain

A: Navicula has bilateral symmetry.

Q: escribe the interaction between the digestive and circulatory system of the earthworm

A: Introduction : Earthworms possess a closed circulatory system of vessels and capillaries that…

Q: What are thepredominating chemicalcompounds respectively ineggshell, white and yolk?

A: Egg contains three parts: egg shell, egg white and egg yolk. The shell contains the viscous liquid…

Q: What are the animal poleand the vegetal pole of thevertebrate egg?

A: An embryo possess some polarity, according to which an embryo is divided into two hemispheres or…

Q: How are the specific cell types patterned correctly? How does the flatwormtell the posterior…

A: Planaria are flatworms that reproduce asexually through fragmentation (not binary fission, which is…

Q: in a wolf house spider, lycosa   Locate the spinnerets at the posterior end of the abdomen. What…

A: Spinnerets are organs located outside the abdomen of spiders that produce silk fiber that helps them…

Q: Which are the characteristics and organs of the digestive system of earthworms related to the type…

A: Animals can be classified into three types based on the diet as, plant eaters (herbivores), meat…

Q: Can the dorsal lip of the blastopore inducecells in another part of the amphibian embryoto change…

A: The dorsal lip of a blastopore is a structure formed during the early development of the embryo. The…

Q: What is the class of this animal?

A: The animal shown in the image is Tortoise. The tortoise is a terrestrial animal and found on all…

Q: What is the function of gastrocnemius msucle in the frog?

A: The construction of the muscular, skeletal, and other anatomical frameworks are explicitly changed…

Q: What’s an invertebrate?

A: RH Whittaker gave the five-kingdom classification and divided all the living organisms into the five…

Q: Distinguish between: telolecithal and homolecithal eggs. Explain with examples of each

A: Eggs can be classified based on the amount and the distribution of the yolk present in them. On the…

Q: What are the parts and function of the digestive system of a frog?

A: The digestive system is responsible for breaking down of large food particles into smaller food…

Q: Do frogs have a cecum?

A: Biology is a branch of science that studies about the living organisms. The biology studies about…

Q: What is the clitellum of earthtworms and where it is located?

A: An earthworm is a terrestrial invertebrate found in the upper layers of the moist soil that is rich…

Q: Distinguish two mechanisms by which flatworms supply yolk for their embryos. Which system is…

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

Q: In excess of alkoloidal reagent, did thr precipitate formed dissolve or not in egg albumin? What is…

A: Proteins are the large complex biomolecules formed by the combination of the twenty amino acids,…

Q: What is vasa deferntia in earthworm?

A: Earthworm . scientifically named as Lumbricina terrestris is a terrestrial invertebrate. They have a…

Q: in eathworms, Is the clitellum located near the anterior or posterior end? What does the clitellum…

A: Annelida are segmented worms that live in saltwater, freshwater, and wet terrestrial environments.…

Q: The egg of a fish is what type of chordate egg and why? a. isolecithal b. telolecithal with total…

A: All fish eggs are surrounded by using an envelope, referred to as the zona pellucida (ZP), that…

Q: Based on current knowledge, how would you explainthe difference in the percentage of tadpoles…

A: Frog is an amphibian creature. It lives in both water and land. Frogs usually feed on insects. The…

Q: What is the function of the Glizzard in a worms body.

A: The worms gizzard is an oval, thick walled and highly muscular organ lying in the 8th -9th segment.

Classification of Marine Organisms

Classification is a way of categorizing organisms that enables an easy process of identification of such organisms. All living things are classified by grouping them under specific categories. The grouping is done based on the close relativeness of the organisms. The classification tool requires knowledge of characteristics, differences, and similarities between different organisms.