How many chambers does a scoliodon have?

Q: What are the functions of Meckelian, hyoid and branchial cartiages? Discuss.

A: Cartilages are connective tissues that form structural parts of the body and also support the body…

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: Name the specialized feeding structure of vertebrata

A: The classification of animals is done based on the presence of the spinal cord and backbone. The two…

Q: What are tubercles?

A: Tubercles are the parts of a bone.

Q: What is the difference between a cysticercus and one with an evaginated scolox?

A: Phylum Platyhelminthes amongst Kingdom Animalia is considered to be one of the primitive…

Q: Define endoderm

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

Q: Do invertebrates without bones have something rigid for their muscles to pull against? How so?

A: Invertebrates are organisms that do not have a vertebral column. These organisms do not have a…

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: What are the features of trabeculae?

A: The human body is a well built machine in which all the organs coordinate together to make it work.…

Q: Which other phylum of the animal kingdom present species with exoskeleton?

A: Exoskeleton is present on the outer surface of the body as a covering which provides the protection…

Q: What invertebrate groups exhibit hydrostatic skeletons? What is the importance of the hydrostatic…

A: Invertebrates are those which do not have vertebral column.

Q: What is protostome ?

A: Protostomes are large and diverse group classified by their shared characteristics: these…

Q: How are the valves of a brachiopod oriented in terms of the dorsalventral axis?

A: Brachiopods belong to the Phylum Brachiopoda, which is a monophyletic group. These organisms are…

Q: How many visceral arches are found in Scoliodon?

A: Scoliodon is also known as dogfish, it has some pores present on its upper and lower surface of the…

Q: What is Asterospondylous centrum?

A: Bone is a rigid organ that makes vertebrate skeleton and protect the different organs of the body.

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: What is archegonium?

A: Archegonium is a female sex organ that is found in bryophytes, pteridophytes and most gymnosperms.

Q: What is the role of haversian canal in mammalian bones?

A: Haversian canals also known as canal of  Havers, are a series of microscopic tunnels which surrounds…

Q: What does Chylomicrons contain?

A: Chylomicrons are defined as the large triglycerides which are rich in lipoproteins and these are…

Q: What features of a hydrostatic skeleton do Sponges, Cnidarians, Nematodes, Annelids, and Arthropods…

A: The most frequent skeletal system for movement and support in animals is the hydrostatic skeleton.…

Q: Define Chordata

A: A category of an animal which consists of notochord and vertebral column. Chordata is an group or a…

Q: How many worms were 7.25 cm long?

A: -Normally the worms can be few inches to several centimetres long. -The length of worm varies…

Q: What are various types of appendages that thorax bears?

A: Appendages are extremely complex structures consists of multiple tissues having the ability to…

Q: Write down the division between agnatha and gnathostomata?

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

Q: What is the radula? What is the function of this organ?

A: It is an organ that is present in the organisms of phylum Mollusca. Some characteristics of Mollusca…

Q: Are the skeletal plates of Blue Sea Star arranged regularly or irregularly?

A: Sea stars, additionally called starfish, are marine invertebrates of the class Asteroidea (phylum…

Q: What is the role of gnathostomata in vertebrates?

A: Phylum Chordates are characterized by the presence of four diagnostic characters notochord, dorsal…

Q: What do you mean by trabeculae?

A: INTRODUCTION:- Trabecula  provides support  in various organs such as heart,penis,and spleen.

Q: What type of exoskeleton do some molluscs present?

A: The mollusks are soft-bodied, marine invertebrate animals. These can be present on land or…

Q: 36. What is the mouth apparatus of this organism? probocis mandible chelicerae Olabellum

A: Hemiptera  is an order of insects, commonly called true bugs, comprising over 80,000 species within…

Q: How are the ° lacysts or auditory vessicles formed? DISCUSS.

A:

Q: How is Mesosome formed?

A: Mesosomes are the convoluted membranous structures that are involved in the synthesis of cell walls…

Q: clavicu

A: The human skeletal system consists of 206 bones. All these bones help in the movement and provide…

Q: What is a radula and what is its function?  What is a mantle and what is its function

A: Given: Need to define radula and it's function Need to define mantle with it's function.

Q: What are the characteristics of perichondrium?

A: Bones, tendons, cartilage, and ligaments make up the skeletal system. Cartilage is a connective…

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: Of how many bones in each ramus of the frog's upper jaw formed?

A: On each side of a frog's body, two vertical processes called the rami are found which connect the…

Q: What is zygotes ?

A: Fertilization is the process of combining gametes to create a new individual organism or offspring…

Q: What are functions of septal pores?

A: The ascomycetes and basidiomycetes comprise most of the species of filamentous fungi. The hyphae of…

Q: What is the structure of decalcified mammalian bone?

A: Decalcified bones refer to the bones from which calcium ions are removed, and bone is softened.…

Q: How does the arrangement of skeletal structures differ in sea urchins, sea stars, and brittle stars?…

A: Sea urchins have five-fold symmetry,

Q: What is the difference between Labeo and Scoliodon?

A: Fishes are gill bearing aquatic animals that belong to the kingdom Pisces and phylum chordates. They…

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.