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Darwin while evolving the concept of natural selection laid emphasis on competition among individuals belonging to a species, that is intraspecific competition. Here the individuals compete for almost identical requirements from the environment. Competition between individuals belonging to different species, that is interspecific competition is also observed in nature. In the following subsection we shall discuss the essential differences between the two types of competition, and subsequently highlight the role of natural selection in evolving coadapted colnmunities of closely related species.
Contrast the reproduction of bacteria with that of frogs. Bacteria replicate asexually by splitting in two. Frogs reproduce sexually by producing sperm and eggs. One sperm and
Two homologous human chromosomes have the following structure: where the letters represent genetic markers and the black dot represents the centromere. 1. Diagram the two chromosom
Q. What is visual accommodation? Visual accommodation is the phenomenon of varying the curvature of the crystalline lens to make possible the difference of its refractivity to
Cohesiveness and Surface Tension Water flows freely, yet water molecules do not break apart. They cling together particularly to polar surfaces. Therefore, water can fill a tub
Discuss about the function of Tear Film in short. Functions of Tear Film The normal function of the eye is dependent on sufficient supply of tear fluid- a secretion
Self-Monitoring of Blood Glucose (SMBG) In SMBG, patients measure and monitor their blood sugar level by themselves and assess their condition and know the response to the trea
What are halophile, thermoacidophile and methanogen archaebacteria? There are three peculiar parts of archaebacteria. The halophile archaebacteria only survive in salt-rich env
Define the Prevention of diseases - Function of Vitamin E? Because of its anti-oxidant function and its role in inhibiting cell proliferation of smooth muscles, vitamin E can b
Explain the Serial Dilution Process - Plate Counts? Dilution factor is the reciprocal of the dilution used. As number of microorganisms in original sample is not known, the ori
Define Procedure for Determination of Blood Glucose by Nelson Somogyi Method? 1. Label a series of Folins tubes with blank (B), standard (S1-S5) and sample (SA 1-2) and place
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