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Q. What is the function of the umbilical cord?
The umbilical cord is a set of blood vessels that connects the fetus with the placenta and in the fetus one extremity of the cord inserts into the center of the abdominal wall that is the later scar of this insertion is the umbilicus or navel.
The function of the umbilical cord is to allow the transport of nutrients, substances, residuals and gases between the fetus and the mother's body.
Q. What are examples of the economic and ecological importance of molluscs? Molluscs are important players in several food chains in ecosystems. Many marine molluscs are part o
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If porifers shiw cell aggregate plan tgen how can they also shiw division of labour among cells
Which of the following best explains mechanisms by which histones interact with DNA? A. Histone core proteins interact with the main groove of DNA by the helix-turn-helix-turn
general characteristics
Charles Darwin was the first person to suggest that: a. the present forms of all existing species are the result of natural selection b. species have changed over long periods of t
Q. Is the esophagus a muscular organ? Why even in a patient lying totally flat on a hospital bed can the swallowed food reach the stomach? The esophagus is a predominantly musc
. which is the main part of respiratory organ?
What is Non specific defence Non specifi c: These relate to the physical barriers like skin and mucous membrane. They form the first line of defence against entry of mic
GENETIC TERMINOLOGY (i) Gene - Mendel used the term factor for a gene. A gene is the unit of DNA responsible for the appearance and inheritance of character. (ii)
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