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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
What are mycorrhizas? How does each participant benefit in this ecological interaction? Mycorrhizas are mutualist ecological interactions among fungi and some plants roots. Fun
discus the protozoan flagellates of less medical importance ,outlining their development stages,normal habitants and morphological characteristics
Q. What is the relation between secretion of parathormone and the calcium blood level? The parathormone increases the calcium blood level since it stimulates the resorption (re
Q. What do you mean by Alpha diversity? Alpha (a) richness refers to the number of species found in small, homogenous area. Alpha diversity refers to the diversity in a partic
LIVING MATTER Since at the subatomic level, all matter is basically similar, the fundamental chemical and physical principles are equally applicable to all objects in nature; y
Darwin while evolving the concept of natural selection laid emphasis on competition among individuals belonging to a species, that is intraspecific competition. Here the individual
Analysis of Developmental Potency of Nuclei The instances given above and many other observations and experimental results of this nature provide tough support to the hypothes
Q. Nervous System control of blood pressure? Most nervous controls are achieved via involuntary reflex arcs involving pressoreceptors, the vasomotor centers of the medulla, and
In hospitals where many tuberculosis patients are treated the population of the tuberculosis mycobacteria may be constituted of multiresistant (to antibiotics) strains. How does th
Cyanotic Heart Disease In this there is a communication between Pulmonary and systemic circulation through which venous blood enters the systemic circulatory system. The infa
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