Oligochaetes and leeches:(can be more than 1) have a cuticle that is molted. possess parapodia possess a clitellum are hermaphroditic possess prostomial sensory structures

Q: Discuss the ecological importance of trematodes.

A: Introduction Trematoda is a subphylum of the Platyhelminthes phylum. It consists of two types of…

Q: The dauer stage of worm development occurs:   1) when there is ample food   2) when there is…

A: Worms are the organisms of the animal kingdom that lack eyes and limbs. they have a cylindrical…

Q: Why do parasites like trematodes produce such large quantities of eggs?

A: The trematode reproduces asexually inside this mollusk host, creating numerous copies of a second…

Q: Nematodes body is covered with epidermis (True/False)?

A: Nematode is an invertebrate belong to the Nematodia class. They are usually referred to as…

Q: The defining feature of the cnidarians is that they all have nematocytes (cnidocytes). These cells;

A: Cnidaria is a phylum of aquatic animals with about 11000 species. Cnidarians can be both marines as…

Q: Which of the following lack setae:(can be more than 1 nemerteans leeches earthworms polychaetes

A: Setae are frequently employed by insects as a high-surface-area substrate over which a pheromone is…

Q: The earthworms are different than the leaches in that the earthworms move by; Using chetae to anchor…

A: According to the question, we have to explain the reason the earthworms are different than the…

Q: Which of the following sponge body types would have the lowest amounts of gas exchange and feeding?…

A: The question is asking us to determine which of the three given sponge body types - synconoid,…

Q: Describe the following characteristics of ctenophores: common developmental stage digestive system…

A: Organisms can be classified on the basis of several characteristic features, organ system, cells…

Q: Members of the phylum Platyhelminthes have two body forms: free-swimming medusa and stationary…

A: The phylum Platyhelminths includes the soft bodies worms that are bilateral and unsegmented…

Q: Arthropods are;

A: The correct option is B.  Protostomes .

Q: The echinoderm blood vascular (hemal) system is involved in which of the following (can be more than…

A: Echinodermata are named based on their barbed skin, and this phylum is an assortment of around seven…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.