Define Chordata

Q: Compare and contrast the external anatomy of the branched and unbranched forms of Equisetum.

A: Equisetum, often known as the 'horsetail' or'scouring rush,' is now made up of approximately 30…

Q: Define the term diphyodont.

A: The suffix dont is used to describe teeth. So, the term diphyodont refers to specific pattern…

Q: Describe two types of canal system for sponges including a class representative for each system

A: The canal system is a distinguishing feature of all sponges. It is the perforation of the body…

Q: Define endoderm

A: Gastrulation is a step of embryogenesis when a cell divides. It is the stage at which the growing…

Q: Compare Class Maxillopoda and Class Branchiopoda

A: Arthropoda It is a much heterogeneous group including a variety of animals with divergent views…

Q: Draw the structure of scoliodon and pristis?

A: The Scoliodon (dogfish) and the Pristis (sawfish) are the cartilaginous fishes that belong to the…

Q: Define the Chordate characteristics ?

A: The chordates belong to the Chordata phylum of the animal kingdom. The name Chordata comes from…

Q: Distinguish between polyp and medusa forms.

A: The phylum cnidaria comprises approximately 9000 species. It includes hydra, jellyfishes, sea…

Q: List two or three features of an earthworm cross section that distinguish the dorsal and ventral…

A: The earthworm is an invertebrate that belongs to Phylum Annelida. It has a tubular body plan and…

Q: A B

A: Answer :  A- frons  B- clypeus

Q: Fish Skeleton: Label the structures from the manual: 2 = 5 = 9 = 11 = 12 = 13 = 17 = 21 = 23 = 24 =…

A: Labelling 2) Pectoral girdle 5) Pelvic girdle 9) Branchial 11) Dentary 12) low jaw bone 13)…

Q: Differentiate between antheridia and archegonia.

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

Q: Give the digrammatic representation showing Vertical section through tooth of frog?

A: The teeth of frogs of conical in form. The teeth are meant for self-protection. Generally, frogs…

Q: (A) Explain clearly the developmental and evolutionary significance of the neural crest within the…

A: Neural crest: it is found in vertebrates. Neural crest cells are derived from ectodermal layer of…

Q: Tissues and cell found in crocodile

A: Crocodiles are large semi-aquatic reptiles that live in the tropics of Africa, Asia, Australia, and…

Q: 1. Define the following                a. Operculum                b. Spine                c.…

A: Trematodes are parasitic flatworms that reproduce through sexual or asexual mode but both take place…

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: Define ecdysis

A: A rapid and complete transfor­mation from an immature larval life to a sexually adult form involving…

Q: Which part of opuntia is modified to form spines?

A: Plants do not show locomotion, so in order to survive in the environment, they undergo several…

Q: Write down the division between agnatha and gnathostomata?

A: Phylum Chordata is characterized by its five anatomical features including a notochord, pharyngeal…

Q: Differentiate between Monohybrid and Dihybrid.

A: A genetic cross is the deliberate breeding of the two different individuals which results in…

Q: Define metamorphosis.

A: Tadpole could never become frogs if metamorphosis did not occur, and larvae could not be capable of…

Q: What are the characterstics of chordata?

A: A chordate is a phylum which contains vertebrates like mammals, birds and some fishes and also…

Q: Identify structure A in this image of the dissected shark (view is of roof of mouth).

A: The shark is a cartilaginous fish that belong to the class Chondrichthyes. They have a two-chambered…

Q: Define cloaca in class-amphibia?

A: Vertebrates are animals that are characterized by the presence of well-developed notochord and nerve…

Q: Discuss canal system in sponges?

A: Sponges are also called Porifera and are primitive multicellular organisms with a cellular grade of…

Q: Identify the antennae parts shown in the picture

A:

Q: Cnidarians are...

A: Ans. Cnidarians are diploblastic.  Option 2nd diploblastic is correct

Q: Draw the structure of nereis and hirudinaria and define its parts?

A: The animal kingdom has a wide variety of organisms under its umbrella. Each organism is distinct…

Q: Compare and contrast the chelicerae of spiders, scorpions, and horseshoe crabs.

A: Chelicerae looks at a collection of species including ticks, spiders, and horse crabs. The prosoma…

Q: Label the orthonectida (Answer A-C only):

A: Orthonectida is a phylum that consists of poorly known marine parasites (invertibrates). It is the…

Q: Give three division of chordata in tabular form?

A: The Phylum Chordate includes vertebrates, such as fishes, reptiles, birds, amphibians, reptiles,…

Q: sea star Tube feet are extended when the ____________________________ contracts.

A: Echinoderms are a phylum of marine invertebrates that include starfish, brittle stars, sea…

Q: Isopod external anatomy: Label the structures from the manual 1 = 2 = 3 = 4 = %3D 4 2

A: Idopod is an insect found in the arthropods class. They have exoskeleton made upof chitin.

Q: Explain endoskeleton present in the cockroaches.

A: Cockroaches are placed in phylum Arthropoda. They are basically insects of order Blattodea that also…

Q: How many chambers does a scoliodon have?

A: The class Elasmobranchii consists of a large variety of cartilaginous fishes. Scoliodon is known as…

Q: Describe the exoskeleton of mealworm larva and crayfish

A: Exoskeleton refers to the structure of a rigid envelope that aids in supporting and protecting soft…

Q: Briefly describe the function of antennal and maxillary glands in Crustacea.

A: Lobsters, prawns, woodlice, and crabs are some animals that are Crustaceans.

Q: Briefly explain the genetic determination of biramous and uniramous appendages.

A: Arthropoda phylum is more often known for the appendages found in the species of these groups. The…

Q: Differentiate between Agnatha and Gnathostomata

A: Step 1 Vertebrate is the largest subphylum of Chordata in which the notochord in the embryo is…

Q: Describe in details diagnostic features and importance of Peaceae.  Cover as many as possible…

A: Poaceae or Gramineae  is a large and almost ubiquitous family of monocot flowering plants known as…

Q: Define cellular blastoderm

A: The blastula is made up of a single layer of embryonic epithelial tissue called a blastoderm…

Q: Explain pore canals in cockroaches.

A: Cockroaches belong to the class Insecta and order Blattodea. It is a common household pest that is…

Q: Define monohybrids

A: Modern genetics is based on the gene principle, the basic hereditary unit. Mendel was the first to…

Q: Considering the presence of segmentation (metameres) in their body to which other already studied…

A: Arthropod are the invertebrate organisms and have segmented body, exoskeleton, and jointed paired…

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.