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how is the nervous system characterized in beings of the phylum annelida how can one compare cephalization in annelids to cephalization in nematodes
how can the excretory system of annelids be describedin each segment metamere of the being a pair of complete excretory structures called
how can the presence localization and function of muscular tissue in beings of the phylum annelida be explainedin these beings there are a
is there a respiratory pigment in the annelid bloodthe blood in beings of the phylum annelida have the respiratory pigment hemoglobin the similar
how is the respiratory system of beings of the phylum annelida characterized respiration in annelids can be cutaneous or branchial cutaneous
which are the characteristics and organs of the digestive system of earthworms related to the type of diet of these animalsearthworms eat decomposing
what is the morphological characteristic that evolutionarily approximates the beings of the phylum annelida to arthropodsthe metameric feature ie the
what is the main evolutionary novelty presented by annelidsthe main evolutionary novelty shown by the beings of the phylum annelida is the coelom the
what is the type of reproduction that occurs in roundworms what typical element do nematode sperm cells have nematodes reproduce sexually the
how is the nervous system of nematodes organized where are the neural chords located in their body roundworms have a ganglial nervous system with an
how does the excretory system of nematodes workthe metabolic residuals of nematodes are collected by two longitudinal lateral excretory channels that
compared to platyhelminthes which physiological problem have the cylindrical body of nematodes brought how was that problem solvedthe cylindrical
what is the main evolutionary innovation presented by nematodes what is the advantage of that innovationthe short evolutionary innovation of
are nematodes diploblastic or triploblastic animals just like platyhelminthes nematodes are triploblastics ie they show three germ layers ectoderm
what are the morphological similarities and differences among nematodes and annelids nematodes like annelids have a cylindrical elongated body
what is the typical morphological feature of nematodes that differentiates them from platyhelminthesnematodes are also called as roundworms as the
are nematodes exclusively parasites there are parasitic roundworms containing parasites of plants but there are also free-living
what are examples of nematodesascaris hookworm and filaria all parasites of humans are instance of nematodes also called as
is it possible for a hermaphrodite species to present cross-fecundationthere are hermaphrodite species of animals and plants that present
how can asexual reproduction in planarias be describedplanarias can separate themselves asexually by transversal bipartition because of the great
is the nervous system in platyhelminthes more or less sophisticated than in cnidarians what are the main neural structures found in flatworms how is
poriferans and cnidarians do not have excretory systems do platyhelminthes have an excretory systemplatyhelminthes have a primitive excretory system
how is gas exchange done in flatwormsplatyhelminthes exchange gases exclusively by diffusion by their body surface this is only possible because all
what are the types of digestion and of digestive system of platyhelminthesflatworms have incomplete digestive systems and they show intracellular and
what is the main external morphological feature that differentiates platyhelminthes from other worms nematodesplatyhelminthes are also called as