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What is the system that permits movement and fixation to echinoderms?
The system that allows movement and fixation to substrates in echinoderms is known as the ambulacral system. In these animals water enters by a structure called madreporite, passes by channels and reaches the ambulacral feet in the undersurface of the body. In the ambulacral region in contact with the substrate, there are tube feet filled and emptied by water therefore acting as suckers
Factors Limiting the Productivity of Aquatic Habitats Sunlight and oxygen are the two most important limiting factors of the aquatic ecosystems. This distinguishes them from t
What is a phenotype? A phenotype is each observable characteristic of a living being conditioned by its genes. Some phenotypes may be changed by nongenetic factors (for instanc
list the major species of echinodermata
Relation between Tissue and the implant material The biologic interaction between the tissue and the implant material at an interface may result in a variety of phenomena such
Chancroid Chancroid, caused by Haemophilus ducreyi, is rare in the US. A single dose of azithromycin or ceftriaxone is usually effective, but may be less effective in HIV-inf
assignment having 12 questions
Q. After digestion the next step is absorption done by cells of the mucous membrane of the intestine. For this task a large absorption surface is an advantage. How is it possible i
Explain Adverse effects of Emtricitabine Emtricitabine can cause hyperpigmentation of the palms and soles, particularly in dark-skinned patients. Because emtricitabine is also
Rejection Reaction For rejection reaction the physiological and biochemical processes are set in the pistil by the recognition reaction specific to the type of pollen that lan
What is an example of negative feeback of the homeostatic regulation? Negative feedback happens when the response to a given action makes an effect that inhibits that action. F
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