Define paired pharyngeal gill slits?

Q: Review the extent of segmentation in Polychaetes, Leeches, Siboglinids, Echicrans, and Sipunculans.

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

Q: What is the evolutionary significance of the fifth gill arch of bony fish no longer supporting a…

A: The vast majority of vertebrates belong to the Osteichthyes superclass of bony fishes. Bony…

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: Give the digrammatic representation showing Reptilian claw?

A: The air-breathing vertebrate organisms are covered by a special skin of bony plates, scales, or a…

Q: Describe how lungs differ among the main groups of terrestrialvertebrates.

A: With a minimal surface area, small lungs are present in amphibians. Lungs become more broadly…

Q: Give the differences lancelet and lamprey with respect tp Body cavity?

A: Lanceletes commonly called amphioxus are marine living, small, eel like animals 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: What are the characteristics of a female mud crab ( Scylla serrate) on its carapace?

A: Carapace is meant for the protection and it vary in size and is different in males amd female.it is…

Q: Give a short note on Snout-Producing organ?

A: The olfactory system is a sensory system that is used for olfaction. It is one of the special senses…

Q: What does Hemidactylus mean?

A: Geckos are reptiles and are found on all the continents except Antarctica. These colorful lizards…

Q: Give the differences between lancelet and lamprey with regard to the external characters?

A: Lancelets belong to a class of Cephalochordata, primitive chordates. They are small animals usually…

Q: What is the location of barbels in Labeo?

A: A barbel is a characteristic feature in fishes and turtle. They are slender, cylindrical shaped…

Q: Under which environments do echinoderms live?

A: Echinoderms are the animals that have no terrestrial or freshwater representatives. Echinoderms…

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: Discuss in detail the external characters of Hemidactylus?

A: Hemidactylus belongs to the kingdom and phylum Animalia and Chordata respectively. They reside in…

Q: How does the wall lizard produce sound?

A: Lizard is a vertebrate that belongs to the Class Reptilia. Reptiles are generally characterized by…

Q: Mention the function of the concha in the lizard's nasal chamber?

A: Lizard is a reptile that belongs to the Squamata order. There are nearly 6000 species of lizards…

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: Give the difference between frog and shark regarding the external characters?

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

Q: Do echinoderms present with cephalization?

A: Cephalization is the formation of a central nervous system in organisms. Cephalization is important…

Q: Explain syncytial blastoderm?

A: In most of the insects, superficial cleavage occurs in which the mitosis occurs without cytokinesis,…

Q: Describe key adaptations of aquatic gnathostomes

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

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: what  is a carapace?

A: Numerous animals have a protective covering on the outside of their bodies. Some of the animals with…

Q: Concerning the occurrence of separated sexes how are the beings of the phylum Annelida classified?

A: All the animal species on Earth are classified into different phyla or groups. The phylum Annelida…

Q: What is the role of blood sinuses in the cockroaches?

A: Introduction  All aerobic organism need oxygen to survive. This oxygen can be taken either by skin…

Q: How does a kinorhynch burrow itself into the mud. Explain the locomotory mechanism.

A: As part of the meiobenthos, Kinorhyncha is a phylum of small marine invertebrates that can be found…

Q: Have the head fold and tail fold fused to form the ammiotic cavity?

A: The longitudinal and transverse folding that happens as a result of embryonic expansion,…

Q: Name and describe two adaptations that make squid good predators.

A: Squids have some unique adaptations. Squid are marine cephalopods with elongated bodies, large eyes,…

Q: Draw the diagram of ventral view in earthworm?

A: The earthworm is a reddish-brown terrestrial invertebrate. They inhabit the upper layer of the moist…

Q: Give three division of chordata in tabular form?

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

Q: Into which classes is the phylum Annelida divided?

A: Annelids are also known as segmented worms or ringed worms. Annelids are a large phylum, with more…

Q: What does the name “echinoderm” mean?

A: Echinoderms have the following characteristics- 1. They are triploblastic. 2. They are marine. 3.…

Q: What are the characteristics of a female mud crab ( Scylla serrate) on its mouth (Buccal) Frame?

A: The scientific name of the mud crab is Scylla Serrata. It is found in mangroves. Generally, a mud…

Q: What are the external characters of Labeo?

A: Labeo belongs to phylum chordata and sub-phylum vertebrata. It belongs to class teleostomi. Its…

Q: Name a chordate having colourless blood without corpuscles?

A: The chordates are the vertebrates that belong to the kingdom Animalia and phylum Chordata. The…

Q: What are amphisbaenians? What morphological adaptations do they have to aid in burrowing?

A: Reptiles are the tetrapod organisms and include lizards, snakes, crocodilians, and amphisbaenians.…

Q: Give the digrammatic representation showing Digestive system of Hemidactylus?

A: Hemidactylus is a genus of family Gekkonidae. They include different species of common geckos. They…

Q: How many gill slits are present in Scoliodon?

A: Scoliodon or shark belongs to class Chondrichthyes.  Their skeletons made up of cartilage rather…

Q: Discuss the adaptations of Labeo?

A: Fishes are gill-bearing aquatic vertebrate animals. The earliest organisms that can be first…

Q: Explain the mouth part of cockroaches.

A: Cockroaches are insects belonging to the phylum Arthropoda. They are omnipresent. They mostly prefer…

Q: Give an account of eye of a bony fish?

A: Bony fishes are fishes belonging to the superclass Osteichthyes. They have bony structures in place…

Q: Why is the internal shell of Cephalopods significant to their adaptation?

A: Cephalopods have huge, advanced brains, and their brain-to-weight proportion is the biggest among…

Q: How does a kinorhynch burrow itself into the mud, explain its locomotory mechanism

A: INTRODUCTION Kinorhyncha Kinorhyncha comes under the class Aschelminthes, they are closely related…

Q: Lungfish lack A) Fingers and toes B) Vertebrae C) Choanae D) Jaws

A: Kingdom Animalia contains all animals. It is the largest kingdom of Animalia as compared to other…

Q: Explain in brief the habitat and habits of Hemidactylus?

A: Hemidactylus is a genus in the gecko family. The gecko is basically lizards, which are smaller in…

Animal Behavior

Animal behavior can be defined as all the things that animals do. In response to a stimulus, an animal performs a certain fixed action pattern, or FAP, of behavior. This response occurs to make the animal more adaptable to change. So, behavior is generally a stimulus-oriented response. A behavior is an expression of the capabilities of the nervous system. A stimulus is determined by the environment, while the nervous system determines a response.