In the sexual reproducing phyla Nematoda, are the animal’s hermaphrodites or separate  sexes?

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: Tapeworms posses both male and female reproductive organs. What is the name given to such organism?…

A: Sex is the combining and mixing of Chromosomes during the formation of offspring.

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: How is the development of a hookworm larva different from the development of a pinworm larva

A: Larva is a stage during the development of animals. It occurs after the birth and before the reach…

Q: Recognize the basic morphological characteristics ofechinoderms.

A: Introduction  Echinoderm is the phylum contains non-chordate invertebrate animals. They have spiny…

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: Name the copulatory organs of Scoliodon?

A: Scoliodon is a genus of requiem sharks that belongs to the family Carcharhinidae. It is also called…

Q: Are nematodes diploblastic or triploblastic animals?

A: Nematodes or roundworms constitute the phylum Nematoda or Nematohelminthes. They may occur as…

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: Define acoelomate

A: Acoelomate are invertebrates that do not contain a coelom or a body cavity. The organisms belonging…

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: How is arthropod reproduction characterized?

A: Arthropoda is the largest phylum of Animalia.  Defined by segmented body and paired jointed…

Q: What are two cestodes for which humans can serve as intermediate hosts?

A: The cestodes parasite belongs to the subphylum cestode, the animal kingdom. They are characterized…

Q: What is reproductive in Honey bee

A: Offspring are produced during reproduction.  Sexual and asexual reproduction are the two main types.…

Q: What advantage do organisims that reproduce sexually have over other oranisms that reproduce…

A: The biological mechanism by which new individual organisms – "offspring" – are created from their…

Q: What are four synapomorphies and four symplesiomorphies of gnathostomes?

A: Introduction When a character or trait  is shared by two or more taxonomic groups and is derived…

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: Annelida (Segmented round worms) How do these worms differ from the other two? What are the…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. If you need help with other sub…

Q: How many zygotes do humans have?

A: A zygote is a eukaryotic cell formed after the fertilization between two gametes, the sperm cell,…

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 benefit would being a hermaphrodite confer on a specific species?

A: Reproduction is a biological process through which an organism produces organisms (young ones) of…

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: What is the function of the notochord? What organisms possess notochords throughout their lives and…

A: Numerous organisms are present on the phase of earth. Some are simple organisms, while some are…

Q: How are nematodes and nematomorphs alike, and how are they different?

A: Ecdysozoans are a group of protostome animals that include nematodes, arthropods, and numerous…

Q: List the two major groups of animals in theDeuterostomia.

A: Deuterostomia are organism in which development of anus takes place first from the dorsal blastopore…

Q: Are flatworms monoecious or dioecious?

A: Monoecious are those organisms that contain both female as well as male reproductive organs. They…

Q: What is the significance of having an invariant cell lineage of the nematode,

A: Caenorhabditis elegans is a model organism which help us to study various human diseases. This worm…

Q: What are the example of annelida?

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

Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.