Q: What are Arachnids ?
A: Phylum Arthropoda has 4 subphyla: Chelicerata (arachnids), Hexapoda (insects), Crustacea…
Q: Discuss the unique reproductive capacity of the bdelloid rotifer.
A: Bdelloid rotifers belong to kingdom Animalia and phylum rotifera.They are mainly found in freshwater…
Q: Compare the differences in sexual reproduction between Porifera and Cubozoans. How does the…
A: The important evolutionary step which happened with respect to the phylum cnidaria was the…
Q: Do all mammals have aplacenta?
A: Placenta is the organ that develops in the uterus during pregnancy. This structure is essential for…
Q: What are the number of chromosomes in worm?
A: Chromosomes are thread-like structure of nucleic acids and protein, which are found in the nucleus…
Q: How is a hemocoel different from a true coelom?
A: Organisms with three primary germ layers are called triploblastic while the ones with only two…
Q: Is reproduction in sponges sexual or asexual? What is the evolutionary advantage of the occurrence…
A: Budding, gemmation, or fragmentation (regeneration) are examples of asexual reproduction in sponges,…
Q: What is phylum-echinodermata with its diagram?
A: The phylum Echinodermata belong to the animal kingdom. The members of this phylum have endoskeleton…
Q: Why is the madreporite of sea cucumbers internal instead of external like other echinoderms?
A: The madreporite is made up of calcium carbonate and is covered in pores, looks grooved like some…
Q: What is the main evolutionary innovation presented by nematodes? What is the advantage of that…
A: Nematodes are bilaterally symmetrical, elongated organisms which play a vital ecological roles as…
Q: How is arthropod reproduction characterized?
A: Arthropoda is the largest phylum of Animalia. Defined by segmented body and paired jointed…
Q: Explain how Craniata are paedomorphic for some traits of Chordata larvae.
A: Hemichordates have a number of features that are common between them, chordates and echinoderms.…
Q: Hemichordata is a small aberrant group which was earlier placed with chordata. Give reason.
A: Taxonomy is a branch of science involved with classification, particularly of organisms;…
Q: What environment would you find an echinoderm?
A: Echinoderms have the following characteristics- 1. They are bilaterally symmetrical. 2. They have a…
Q: Does the lack of a digestive system in tapeworms indicate that it is a primitive, ancestral form of…
A: Introduction: Platyhelminthes are organisms having a single opening to the digestive cavity. They…
Q: How can brachiopods be distinguished from bivalves?
A: Invertebrates are organisms in which backbone is absent . It includes :- A ) Arthropods B )…
Q: How do chordates reproduce?
A: Chordates are the animals that have a notochord, a nerve cord, pharyngeal gill slits and post anal…
Q: What characters unite rotifers and acanthocephalans as members of clade Syndermata?
A: Animal phylogeny is a rapidly changing field for the biologists. Even if the members of animal…
Q: Why are robber crabs land invertebrates?
A: Robber crab which is also known as coconut crab, scientific name Birgus latro , it is a species of…
Q: Difference between pseudocelomates and acoelomates?
A: Coelom is the chief body cavity of animals. It is present inside the body to surround and contain…
Q: What phylum is the closest relative of nemertines? Why?
A: Nemertines: Nemertea, sometimes known as ribbon worms or proboscis worms, is a phylum of organisms.…
Q: What are some adaptive advantages of a pseudocoel compared to the acoelomate condition?
A: In animals the body cavity (coelom) is the area or free space that contains all the organs suspended…
Q: Are flatworms monoecious or dioecious?
A: Monoecious are those organisms that contain both female as well as male reproductive organs. They…
Q: What morphological evidence suggests that nemerteans are typical coelomates?
A: Phylum Nemertea commonly called ribbon worms are bilaterally symmetrical, unsegmented organism that…
Q: Which amniotes are endothermic? What are some advantages of endothermy?
A: An organism alludes to something living that has a coordinated design, can respond to boosts,…
Q: What are the flask shaped female sex organ in mosses called?
A: Mosses are the non-vascular plants that reproduce via spores. These organisms form a separate phylum…
Q: Is there a respiratory pigment in the annelid blood?
A: The annelids are also referred to as the segmented worms. Some examples are leeches and earthworms.…
Q: What is the name of the larva of corals and sea anemones? What is the biological importance of that…
A: Corals belong to the class Anthozoa of the phylum Cnidaria. They are marine invertebrates and are…
Q: Are all ‘choanates’ also amniotes? Are all amniotes in the group Choanata?
A: Introduction: Any animal affiliated to the subfamily Vertebrata, the most common subphylum of the…
Q: Is reproduction in sponges sexual or asexual?
A: Sponges belong to phylum Porifera.
Q: hat features of molluscs appear in other invertebrate phyla? Explain
A: The most common properties of mollusks are covers with various vital openings used for breathing and…
Q: Name one ecological niche that polychaetes occupy in the wild? What are some adaptations that help…
A: The Polychaeta also referred to as the bristle worms or polychaetes, are a paraphyletic class of…
Q: What is the type of asexual reproduction that occurs in hydras?
A: Asexual reproduction: This is a type of reproduction where one parent can give rise to offspring…
Q: Cyclostomes are often thought as of as “primitive” because they lack jaws. In what ways could the…
A: Cyclostomata is a group of agnathans that comprises the living jawless fishes; the lampreys and the…
Q: What are some representatives of the echinoderm phylum?
A: The representatives of phylum Echinodermata are known as echinoderms. 'Echinos' means spine and…
Q: What is clasper in scoliodon?
A: Scoldion or the Dogfish belongs to the shark family.
Q: Do bdelloid rotifers reproduce only asexually?
A: Reproduction is a method of producing offspring. Offsprings are formed from the parents. This…
Q: What does the name “echinoderm” mean?
A: Echinoderms have the following characteristics- 1. They are triploblastic. 2. They are marine. 3.…
Q: What is Amphidiploid?
A: The ploidy of an organism refers to the number of sets of chromosomes present in a cell that also…
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: What is the cleavage pattern (radial or spiral) for the phylum Echinodermata?
A: Echinoderms (scientific name Echinodermata) are a large group of sea animals only. The name for…
Q: Examine this whole mount of Branchiostoma (amphioxus) What is the function of this notochord? What…
A: It is an example of marine invertebrate-lancelets. Falls under phylum Chordata and subphylum…
Q: What is the destination of the notochord in vertebrates and in protochordates?
A: A notochord appears in embryos as a small flexible rod made from cells from the mesoderm. It is only…
Q: What are the adaptations of Rana?
A: Rana is the genus name of the common pond frogs. Rana temporaria is one of the most common species…
What are Trochozoans ? Explain what do they play ?
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- Give the differences between Petromyzon and Branchiostoma with respect to the reproductive system?Compare the differences in sexual reproduction between Porifera and Cubozoans. How does the difference in fertilization provide an evolutionary advantage to the Cubozoans?What are some adaptive advantages of a pseudocoel compared to the acoelomate condition?