List the characteristic feature of sacrodines.

Q: What are the anatomical advantages for simple animals in the chordata phylum?

A: There are four anatomical advantages for simple animals is that, when taken together, set chordates…

Q: DEUTEROSTOMIA Chordata Chordata V [Choose ] Endostyle Anus forms at or near the site of the…

A: Blastopore :-  It is a pit in the side of the embryo, through which cells destined to be endodermal…

Q: What is the main external morphological feature thatdifferentiates platyhelminthesfrom other worms…

A: Helminths are the worm-like parasites that live by feeding on living hosts. They gain protection and…

Q: Discuss the anatomical adaptation of tapeworms to their intestinalhabitat.

A: Symbiotic relationships: Symbiosis is a type of close and long term relationship between two…

Q: Do all of the tentacles of a squid have suckers?

A: Cephalopods belong to phylum mollusca. These exclusively marine animals are characterized by…

Q: Please hand draw a picture of Clonorchis (Class Trematoda) and label its anatomy with the terms…

A: Hi, Thanks For Your Question.  Answer :  Terms labelled In Drawing With Numbers As Following ; Oral…

Q: What external features make scorpions appear so menacing?

A: Scorpions are defined as any of various nocturnal arachnids that belong to the order Scorpionida and…

Q: Give the names of the three divisions of cloaca in sand lizard in order beginning from anterior end?

A: Cloaca is the common chamber and outlet that opens into the exterior. It is present in amphibians,…

Q: Flatworms (platyhelminthes) possess a O A. metanephridial system B. protonephridial system O C.…

A: Flatworms are unsegmented organisms that are bilaterally symmetrical and are acoelomates. They have…

Q: What features do all roundworms share?

A: Phylum Nemathelminthes or Aschelminthes belong to the animal Kingdom consist of roundworms. The word…

Q: Describe the four characteristics that are unique tovertebrates.

A: Introduction: Earth is inhabited by millions of living creatures and all are known by their distinct…

Q: Describe the characteristics of pseudocoelomate roundworms.

A: pseudocoelomate are organisms which have a body cavity that is filled with fluid and the fluid…

Q: Distinguish each of the following orders from the others: Araneae, Scorpiones, Opiliones, Acari.

A: The phylum Arthropoda is composed of animals with jointed appendages or legs. It is a phylum of…

Q: Define the concept of Invertebrate Deuterostomes ?

A: Invertebrates                     Invertebrates are defined as a group of animals that has no…

Q: How do chaetognaths feed?

A: The word chaetognaths are derived from the Greek word chaite, long flowering hair, + gnathos, jaws.…

Q: What characteristics distinguish hexapods from all other arthropods?

A: The six-legged arthropod that belongs to the sub-phylum Hexapoda is referred to as hexapods.…

Q: Describe how cephalopods swim and how they eat.

A: After arthropods, Mollusca is the second largest phylum in animal kingdom with around 85,000 0f…

Q: In what ways are cnidarians important?

A: Cnidarians is that term in which any animal belongs to the Phylum Cnidaria. Cnidarians is that term…

Q: Define ecdysis

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

Q: Define about the Spirogyra ?

A: The term "algae" refers to a vast and diverse group of photosynthetic eukaryotes. It's a…

Q: Annelid anatomy can be described as “a tube withina tube.” Explain.

A: Annelids are a phylum of worms with invertebrates. They are the worms which are segmented, with over…

Q: What is one of the main characteristics distinguishing arachnids from insects?

A: Arthropods are segmented invertebrate animals having a chitinous exoskeleton and jointed appendages.…

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: Explain two peculiar features of the body-wall muscles in nematodes.

A: Nematode is any unsegmented worm that belongs to the phylum Nematoda. The nematodes are commonly…

Q: What is a tongue worm, and where would it be found?

A: Tongue worms are classified as the members of Pentastomida under the Phylum Arthropoda, because they…

Q: How are members of clade Clitellata distinguished from other annelids?

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

Q: Differentiate fertilized and unfertilized egg of Ascaris. Differentiate male and female worm of…

A: Introduction: Ascaris lumbricoides is a roundworm of man and it is the largest intestinal nematode…

Q: How does segmentation and having a fluid-filled body cavity confer certain advantages to annelids…

A: Segmentation in annelids is highly adaptive. Annelid body is made of repeating units or segments…

Q: Mention three similarities between lancelet and ammocoetes?

A: A cephalochordate is the Subphylum in the Kingdom Animalia. The vertebrates and cephalochordates…

Q: Describe the characteristics of deuterostomes and which phyla are in each group

A: Division Metazoa is divided into two main evolutionary lines on the basis of embryological…

Q: What is the function of the “pit” of pit vipers?

A: The snakes are considered as the monophyletic group of the order Squamata. Viper is any of more than…

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: How does cryptobiosis in tardigrades increase the likelihood of survival?

A: Water bears, called tardigrades, are the water-dwelling microscopic invertebrates.

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: What is the morphological characteristic that evolutionarily approximates the beings of the phylum…

A: Annelids are defined as triploblastic, bilaterally symmetrical, metamerically segmented, acoelomate…

Q: Define annelid worms

A: The earth is inhabited by both flora and fauna. The flora belong to the kingdom plantae and the…

Q: Where do kinorhynchs live?

A: Kinorhynchs are tiny, spiny, clear, yellowish or reddish worms. They usually have 13 body segments:…

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: Describe the characteristics of acoelomate flatworms

A: The study of biology that deals with the structure, function, evolutionary classification and…

Q: Describe the structure and function of the stinging cells for which cnidarians are named.

A: Introduction: Animal kingdom can be classified into vertebrate animals (without backbone) and…

Q: Explain the mouth part of cockroaches.

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

Q: A multilayered cuticle that is periodically molted characterizes A. nematodes B. kinorhynchs O C.…

A: Despite the current use of molecular tools, the evolutionary links between gastrotrichs and other…

Q: In what habitats would you encounter tardigrades?

A: Tardigrades are semi-aquatic animals so they can survive in watery as well as terrestrial…

Q: Give the Morphological characteristics of Aedes aegypti adults.

A: Toxorhynchitinae, Anophelinae, and Culicidae are the three subfamilies of the Culicidae family, with…

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.