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Why, even though they have an open circulatory system, can flying insects like flies beat their wings with great speed?
In insects the circulatory system is open but this system does not participate in the gas exchange process and in oxygen supply to the tissues. Gases go in and out by the independent tracheal system that permits direct contact of cells with the ambient air. Thus an insect can supply the great oxygen demand of its fast-beating wing muscles even having open circulatory system.
Which of the below determines the major difference between bryophytes (pron: bry-oh-fites) and tracheophytes (pron: tray-key-o-fites)? a) Tracheophytes can make their own food
Q. Pain - criteria for endosteal implants? Pain and tenderness are subjective criteria and depend on patient's interpretation of the degree of discomfort. Pain is defined as u
What is an example of a parasite relationship? An example would be a flea and a dog. The flea drinks the dog's blood, but does nothing helpful for the dog.
what is a cell
GLANDS - 1 . LACRYMAL GLANDS - Tear glands numbers are 3. Its secretion is aquous & salty, keeps eye ball wet, give nourishment to cornea. Lysozyme also present
What is nuclear pollution? Nuclear pollution having of radiations emitted from atomic nuclei, these radiations is highly injurious to living beings. They can be originated from
Define Vitamins required for underweight - nutritional care? If the diet provides good amounts of fresh fruits and vegetables, vitamin or mineral supplements are usually not re
Define Prognosis of Eating Disorders? About 50% of the patients recover fully from anorexia nervosa and achieve normal weight, 30% improve but have a partial recovery and 20% w
Testing for urine sugars is not recommended for either diagnosis or monitoring of patients with diabetes. This is because a urine sugar is not a reliable test. When no facilities a
DIVISION PHASE OR MITOSIS (M- PHASE) Cell division was first observed by Naegeli 1842 in plant cells ,but thoroughly described by Eduard strasburger 1875. Fleming 1879 desc
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