Define dorsal hollow nerve cord in phylum?

Q: Draw the structure of head region of cockroach?

A: Cockroaches are the insects belonging to the order Blattodea. These are generalized insects and do…

Q: Why are cephalochordate considered classical

A: Cephalochordates are the marine fish-like invertebrates belonging to the subphylum Cephalochordata.…

Q: What is the function of otoliths among fish? Where are they located?

A: Function of otolith : Otoliths are biomineralized ear stones which contribute to both hearing and…

Q: Define the role of buccal cavity in earthworm?

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

Q: Name the copulatory organs of Scoliodon?

A: Scoliodon is a genus of requiem sharks that belongs to the family Carcharhinidae. It is also called…

Q: Describe the structure of the skin of a lizard?

A: Reptiles are a group of cold-blooded animals which have skins covered with small hard plates called…

Q: Describe the brain of lizard?

A: Step 1 Reptilia is a class of poikilothermic amniotic creeping or crawling tetrapods which possess…

Q: Give the digrammatic representation showing Muscles of frog in lateral view?

A: Frogs belong to the carnivorous group of amphibians characterized by a short body, tailless body.…

Q: What are the different classification schemes used when grouping invertebrates?

A: Animal kingdom is broadly divided into Vertebrates or invertebrates on the presence of spinal cord…

Q: Differentiate artiodactyls from perissodactyls.

A: Mammals are one of the class of the  Phylum animalia.They posess certain features which…

Q: Explain external features of frog?

A: Anatomy is the branch of biology, anatomy deals with the study of the structure of organisms and…

Q: jawless fish Where is the nerve cord located? Be precise.

A: The jawless vertebrates belong to the subphylum Vertebrata under the section Agnatha. The…

Q: Differentiate between antheridia and archegonia.

A: The sexually reproducing organisms mostly have specific structures or organs involved in the process…

Q: Name the type of regeneration shown by wall lizard?

A: Wall lizards have the capability to regenerate their tails.They have certain set of genes that aids…

Q: When a single organ is innervated by both divisions of theANS, how would you describe their effects?

A: The automatic nervous system is referred to as the control system that a principally is responsible…

Q: Give an account of the body wall of lizard?

A: The lizards are cold-blooded chordates that belong to the class of reptiles. They are native to…

Q: Describe the term compound eye and head in external feature of frog?

A: Introduction: Frogs, widely found in India, are carnivorous, vertebrate animals devoid of tail. Rana…

Q: Define the two major groups of Appendages.

A: Appendages:             An external body part or natural prolongation, that protrudes from an…

Q: Identify the common name of the structures pictured below

A: We all know that angiosperms can reproduce sexually by forming male and female gametes.Male gametes…

Q: describe the location and general appearance of thekidneys;

A: Excretion of organic waste is an elaborate process that requires organs of the excretory system to…

Q: Describe the major events in the evolution of thehominins.

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

Q: Name the specialized skin structure of the class Mammalia.

A: Class Mammalia belongs to the division Vertebrata of the phylum Chordata of the animal kingdom. They…

Q: Define the structure of archegonium in Funaria

A: The five-kingdom classification system by R.H. Whitaker divides organisms into five major groups.…

Q: Give the structure of eye or ear of lizard?

A: Lizards are reptiles which are belongs to the order Squamata. These are scaly-skinned reptiles which…

Q: Describe the location and external anatomy of thekidneys.

A: The Excretory system is accountable for the removal of wastes generated by homeostasis. Many parts…

Q: Write the name of second largest animals in phylum?

A: The term Molluscs stands for "Soft", so it is the phylum dedicated to the soft body animals.

Q: Tabulate the difference between frog and shark regarding the skin?

A: The animals that bear notochord in any stage of their lifetime belong to chordates. Both frog and…

Q: What structures play a role in protecting vertebrate central nervous tissue?

A: Definition of CNS The brain plays a central role in the control of most bodily functions, including…

Q: please label the parts of the internal and external anatomy of the scallop shown in the photo

A: Introduction:  Scallops are commonly named for many species like saltwater clams and marine bivalves…

Q: How is the nervous tissue distributed in cnidarians?

A: Cnidarians are soft-bodied carnivorous animals. Cnidarians are classified into different groups such…

Q: Give the digrammatic representation showing Blood-corpuscles of Frog?

A: Amphibians:   They are small vertebrates and almost live in a moist environment. They have special…

Q: Give a short note on the muscular system of frog?

A: Frogs are amphibians belong to order Anura that belongs to family Ranidae. Frogs are the member of a…

Q: In which organism grasping was completely lost?

A: Grasp is the act of holding with the hand. In zoology, it is precisely known as prehensility. The…

Q: Give an account of the spinal cord of sand lizard?

A: Sand lizards are smaller in size that are found in Dorset regions of thick vegetation. The body of…

Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.