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Q. Do echinoderms have an excretory system? How is excretion done in these animals?
Echinoderms do not have an excretory system their excretions are eliminated by diffusion.
REFLE X ACTION - Marshel Hall discovered reflex action. Best & Taylor defined it. Reflex action is functional unit of CNS. It is sudden, immediate involuntary acti
Q. Of which kind of tissue is the heart made? How is this tissue oxygenated and nutrified? The heart is made of striated cardiac muscle tissue and the heart muscle is called th
Explain What is the optimum temperature for catalyses? Ans) For any chemical reaction, the reaction rate enhances with temperature, so the higher the temperature, the earlier t
Q. Complications in Gastric ulcers? Peptic ulcers if not managed properly can result in serious consequences which can even be life threatening. The complications involved in
The nerve centres which control the body temperature and the urge for eating recontained in: 1. Hypothalamus 2. Pons 3. Cerebellum 4. Thalamus Hypothalamus is the
Several living organisms exhibit the unique property of producing visible light. Compound that is oxidized with subsequent light emission is generally referred to as luciferin. Wha
What are the Risks of migration Eg Getting lost (blown off course or similar) and the effect of this when there is a limited fuel supply. Insufficient food to build
Explain lyases These enzymes (code EC 4) cleave C-C, C-O, C-N and other bonds by elimination, forming double bonds or conversely adding groups to double bonds. Common names
Is the transportation of gases in tracheophytes made through the vascular tissues? The Carbon dioxide and The Oxygen are not transported through the xylem or phloem. These gase
Biology once said why this statement is logical in terms of kin selection and use the coefficient of relatedness he'd be willing to lay down his life to save two brothers or eight
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