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Q. What kind of exoskeleton do some molluscs present?
Some molluscs, like gastropods and bivalves secrete an external calcareous carapace (the shell). Calcium carbonate is a fold in the epidermis, secreted by the mantle, forming the shell.
In pelecypods, the shell is made of two valves that contain and articulate the individual body within. In gastropods the shell contains only part of the body the visceral mass.
What is Phylum Platyhelminthes - Flatworms ? This Class consists of the free-living flatworms, the best known of which is the Genus Planaria. Most of the species in this class
Explain What are analogies for mitochondria? Ans) Well, as we know, the mitochondria are the producers of lots of a cell's energy and the nucleolus makes ribosome's.
Q. Besides being fundamental for the activation of the main gastric digestive enzyme how does HCl also directly participate in digestion? With its corrosive effect HCl also hel
What is Respiratory System explain their functionality ? The respiratory system is responsible for the transport of oxygen and carbon dioxide from outside the body to and from
For convenience, living things are placed into different groups. Taxonomic breakdown of living things comprises the following categories: Family, Class, Genus, Phylum, Order, K
SHORT COMING OF CELL THEORY / EXCEPTIONS OF CELL THEORY (i) Viruses can be considered as exception to cell theory. They are made of proteins and ones of nucleic acid i.e.
Provide supporting evidence to explain how conversion of a normal somatic cell into a malignant one requires multiple mutations.
Illustrate in detail about the Cell theory All living organisms are composed of cells, and they are the basic structural and functional units of life, just like the atom is a
Define volumetric flasks - Nutritional Biochemistry A volumetric flask is used to make up a solution of fixed volume very accurately. It is calibrated to contain a particular v
The heart is drained by vessels that travel in the interventricular and atrioventricular grooves. One set runs in the anterior part of the atrio-ventricular groove. The vessels of
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