Compare the differences in sexual reproduction between Porifera and Cubozoans. How does the difference in fertilization provide an evolutionary advantage to the Cubozoans?

Q: Describe the adaptations "bilateral symmetry", "radial symmetry", "cephalization", "closed…

A: Ecology is the scientific study of the interactions between living things and their surroundings.…

Q: Describe the structure of megasporangium in Selaginella.

A: Selaginella is the only living genus of the order Selaginellales, commonly known as ‘spike moss’.…

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: Diagram the life cycles of Chlamydomonas, Ulothrix, Spirogyra, and Oedogonium; indicate where…

A: Algae is the chlorophyll-containing Thallophyta and considered to be the primi­tive plants with the…

Q: What structures are found in Acanthocephalans which allows them to perform its endoparasitic life?…

A: Acanthocephala (thorny  head) are  parasitic worms  known as acanthocephalans.  Acanthocephalans…

Q: Oligochaetes and leeches: have a cuticle that is molted. possess parapodia possess a clitellum…

A: INTRODUCTION Oligochaete  is a subclass comes under phylum Annelida and it consists of earthworms.…

Q: How can the features of the arthropod exoskeleton explain the terrestrial adaptation of some species…

A: The phylum Arthropoda is characterized by the presence of jointed legs, a segmented body, and an…

Q: How are insects distinguished from other hexapods?

A: Arthropods are the invertebrates that form one of the largest groups of phylum in the animal…

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 are Trochozoans ? Explain what do they play ?

A: The Trochozoa are a proposed Lophotrochozoa clade that is sister of Polyzoa. The trochozoans clade…

Q: Explain the difference between mictic and amictic eggs of rotifers. What is the adaptive value of…

A: The members of the phylum Rotifera have can range in the length from 40 micrometers to 3…

Q: In whose phylum veliger larva occurs?

A: A larva is a juvenile form of animal with indirect development that looks completely different from…

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: melanogaster in your text. . Describe the difference between oviparous, viviparous, and…

A: The production of younger ones will be different in different species which we usually call as…

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: 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: Make a concept map about Subphylum Myriapoda and its classes (Chilopoda, Diplopoda, Pauropoda,…

A: Insects, spiders, crustaceans, and their relatives make up this huge phylum of invertebrate…

Q: Briefly explain why the classification of adult Urochordates used to cause great confusion in the…

A: Urochordata also known as tunicata, belongs to the marine invertebrates.

Q: What factors support the placement of phoronids and brachiopods as sister taxa?

A: The tree phyla-Phoronida, Ectoprocta, and Brachiopoda-possess a crown of ciliated tentacles, called…

Q: Label the parts that are visible of these rotifers and acanthocephalans: 1. Rotifer from class…

A: Rotifers are microscopic aquatic animals belonging to the phylum Rotifers. These are usually found…

Q: Most sponge species are of leuconoid construction, is this an advantage or disadvantage?

A: Canal system is the characteristic feature of sponges. It helps in respiration, circulation,…

Q: Explain syncytial blastoderm?

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

Q: What is the difference between a giant african snail and cowry in terms of shell shape, color and…

A: Introduction : After The Arthropoda, Mollusca Is The Second-largest Phylum Of Invertebrate Animals.…

Q: Distinguish the following groups of echinoderms from each other: Crinoidea, Asteroidea, Ophiuroidea,…

A: Unlike arthropods, the classification of echinoderms does not currently undergo any radical changes,…

Q: Distinguish between opisthobranchs and pulmonates.

A: Opisthobranchs and pulmonates both are soft bodied animals belongs to phylum Mollusca and class…

Q: Giving details diagram the process of tetrasporic megagametogenesis. Give full details

A: INTRODUCTION      It is a process of maturing female gametophyte in plant production. In the female…

Q: What are the differences between the life cycles of trematodes and cestodes?

A: Introduction: Trematodes and cestodes are parasitic worms, they both belong to the kingdom Animalia.…

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: 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: Describe and contrast the tegument of most turbellarians and the other classes of platyhelminths.…

A: Phylum Platyhelminthes includes four classes namely Turbellaria, Trematoda, Monogenea, and Cestoda.…

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: Give the differences between Petromyzon and Branchiostoma with respect to the reproductive system?

A: The chordates belong to the phylum Chordata. Vertebrates is the subphylum under chordates that is…

Q: Describe the differences in the coelomic systems between Oligochaetes and Polychaetes. How do the…

A: differences in the coelomic systems between Oligochaetes and Polychaetes Polychaetesare a subclass…

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: Gonozoids continue the reproductive cycle by budding medusae. About how many maturing medusae are…

A: These are rare in number and only found around the hydrocaulus's base. The gonozooids are the…

Q: Match the following groups under Phylum annelida to the following characters: Match each item to a…

A: The phylum annelida comprises worms with body walls covered with a cuticle; chitinous setae are…

Q: What is the mot distal part of a crinoid that is associated with feeding? A. brachige B. Pinnules C.…

A: Crinoids are marine animals belonging to the phylum Echinodermata and the class Crinoidea.

Q: Which group of echinoderms has a biradial symmetry and tube feet all over its body?

A: Tube feet are one of the little adaptable or flexible cylindrical processes which present in the…

Q: Most wrasses are sequential hermaphrodites. What do you think is an adaptive advantage of this…

A: Step 1 Sequential hermaphroditism or dichogamy is a type of hermaphroditism occurring in many fish,…

Q: Cnidarians and ctenophores are considered diploblastic, but why might some biologists label them…

A: The process of embryonic development is characterized by the formation of the primary layers called…

Q: Compare the structural differences between Porifera and Cnidaria.

A: Sponges are multicellular aquatic animals that belong to the Porifera phylum. A sponge is just a few…

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 are the similarities and differences between insects that go through com- plete metamorphosis…

A: The vast majority of people are acquainted with complete metamorphosis in childhood as a butterfly…

Q: List down the similarities and differences present between a cnidarian medusoid and an adult…

A: List down the similarities and differences present between a cnidarian medusoid and an adult…