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Evolutionary relationship among various animal groups is depicted in the cladogram given below. P, Q and R respectively shown:
a. Vertebrae, hair and four limbs.
b. Bony skeleton, hair and amniotic eggs.
c. Vertebrae, amniotic eggs and hair.
d. Respiration by skin, lungs and poikilothermy.
Nature: Matter and Energy Nature is not just our immediate surrounding or environment, but is the whole Universe of Cosmos. Study of the origin and topography of cosmos is ca
What are the forces that make water to flow within the xylem from the roots to the leaves? Water enters the roots because of the root pressure and a water column is maintained
Why do we need a family of proteins for cell adhesion (what is the advantage of having a family of proteins?)
(a) Give two examples of diseases which can be spread by contaminated drinking water. (b) How can the spread of such diseases be prevented? (a) Typhoid and cho
Define the Carbohydrate Utilization Pattern Test? Carbohydrates are composed of carbon, hydrogen and oxygen. These organic molecules are catabolized by large number of microorg
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what are the characteristis in species in the phyla division
What is the main means by which autotrophic beings obtain energy? The major means by which autotrophs obtain energy is photosynthesis (There are also chemosynthetic autotrophs)
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