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: What is direct development? Is there a larval stage in planarias?
A: Animal development starts with a fertilization of egg and it undergoes two types of development,…
Q: How does the tapeworm body plan support widespread dissemination of the parasites?
A: Platyhelminthes is a phylum of animals that contain all the flatworms such as the tapeworm. These…
Q: What are the germ layers? How many germ layers do sea sponges have? What phylum do sea sponges…
A: Germ layers are formed in the early embryonic stages of foetal development, they ultimately form…
Q: What is the shape of a spider’s chelicerae?
A: Chelicerata, an arthropod group that includes, horseshoe crabs, arachnids, and sea spiders.…
Q: Name the larvae whose larva is Rhabditiform.
A: Strongyloidiasis is a parasitic infection caused by a roundworm found in soil. These worms are…
Q: The phylum Platyhelminthes has what type of symmetry?
A: Phylum Platyhelminthes are belonging to Kingdom Animalia. This phylum is composed of 13,000 species.
Q: What are examples of the ecological and economic importance of molluscs?
A: Molluscs are any animal that has a soft body, no spine, and is often covered with a shell. The…
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: Write the Scientific name of nematode that attacks the root of tobacco plant?
A: The nematodes are also called as roundworms. It constitute the phylum Nematoda (also called…
Q: How is arthropod reproduction characterized?
A: Arthropoda is the largest phylum of Animalia. Defined by segmented body and paired jointed…
Q: What material is found in the skeleton of all sponges?
A: Sponges are members of the phylum Porifera. Sponges are a multicellular organism that has bodies…
Q: How are the sponge’s porous body and canal system important for its maintenance functions? What…
A: INTRODUCTION:- sponges are the living animals which comes under the…
Q: COLUMELLA: present or absent; well developed or not; Form:
A: Columellae: skeletal structures at the central axis of corallites.
Q: What is the economic importance of hornh and stony corals?
A: Cnidarians are mostly marine animals that capture prey with tentacles and stinging cnidocytes. They…
Q: What is the name of the larval stage of polychaetes?
A: Polychaetes are worm-like creatures that have an array of bristles on their many leg-like parapodia.…
Q: What castes occur in honey bees and in termites, and what is the function of each?
A: Insects are the most diverse group of animals belongs to class Insecta. They represent more than…
Q: The male copulatory organ of turbellarians is called a
A: Turbellarians belong to phylum Platyhelminthes.Temnocephala lamothei ,Dugesia aenigma,Dugesia…
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: What is the scientific name for the gas filled bladder of the giant kelp?
A: There are many different organisms found on the planet. Plants are organisms with eukaryotic cells…
Q: What are the example of annelida?
A: All the animal species on Earth are classified into different phyla or groups. They are classified…
Q: What are copepods and diatoms. What are their mechanisms for locomotion and gathering energy.
A: Crustaceans are a large group of invertebrates with a wide range of species.
Q: What is the life history and development of the phylums Mollusca, Annelida, and Platyhelminthes?
A: Phylum Mollusca, Annelida and Platyhelminthes belong to the kingdom Animalia. Mollusca are second…
Q: What is the name of the larva of coral and sea anemones ? What is the biological importance of that…
A: The larva is a developmental stage that is different from the adult stage. The organism has…
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 between opisthobranchs and pulmonates.
A: Opisthobranchs and pulmonates both are soft bodied animals belongs to phylum Mollusca and class…
Q: What are the importance of trematodes/flukes in ecology?
A: * Trematoda is class belongs to phylum Platyhelminthes with including two groups of parasitic…
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: Is reproduction in sponges sexual or asexual?
A: Sponges belong to phylum Porifera.
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: 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: Why are Gastropoda considered in some cases to cause economic harm, why ?
A: The gastropods are commonly known as snails and slugs, they belong to a large taxonomic class of…
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: What are two features that put the octopus in the phylum Mollusca?
A: Mollusks are defined as a large group of invertebrates. They generally have soft body, also the…
Q: What is the function of the feet in molluscs? How is the mollusc foot related to the name given to…
A: Phylum Mollusca is the second largest animal phylum which includes over 60,000 species. Molluscs…
Q: What happens to sperm when they enter neck of fern archaegonium?
A: A part of the plant that serves the function of the production of the female ovum or egg is called…
Q: What are the adaptations of parasitic nematodes that make them successful as endoparasites?
A: Parasitic nematodes are round worms that depend on the host for their nutrition they belong to…
Q: Most sponge species are of leuconoid construction, is this type of sponge construction an advantage…
A: Sponges are the members of phylum Porifera. The Latin name of this phylum is derived from the high…
Q: What are general characters in Rhizopodia?
A: As per the system of classification, living organisms can be classified into 5 broad kingdoms-…
Q: to what kingdom do the termites belongs?
A: The termites are detritus feeders or detritivores. They feed on dead plants and trees. They obtain…
Q: What is the reason for saying that sponges are closely related to, and probably evolved from,…
A: Sponges, which belong to the phylum Porifera, are a sister group to the Diploblasts and are a…
Q: name the dimorphic forms that result in the production of corals
A: The animal body is a very complex creature made up of several systems. Each system in the body has a…
Q: What are the stages of the life cycle of a housefly
A: The house fly is widespread in both rural and urban settings and can be found in all types of…
Q: What are sponges which are commercially important?
A: A sponge may be a member of the Porifera. It's an easy animal with many cells, but no mouth,…
Q: How are gases exchanged in sponges?
A: sponges belong to the phylum porifera which comes under the kingdom animalia.
Q: What is the number of shells each organism has (Cephalopoda Scaphopoda)?
A: Shell or seashell is a hard protective layer formed by an animal that lives in the sea. Shell is…
What is the name of the larva of corals and sea anemones? What is the biological importance of that larval stage?
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