The gills of fish maintain effective oxygen uptake from water and the legs of seagulls reduce the loss of heat to the external environment by the same circulatory mechanism known as __________.

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#Question id: 10690

#Section 1: Ecology

Which of following interaction shown in following species of Paramecium?

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#Question id: 12143

#Section 2: Evolution

The __________ states that two species cannot coexist indefinitely when the same resource limits both species. 

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#Question id: 11252

#Section 1: Ecology

A populations of scale insects exhibited superior survival when transplanted within, rather than between, ponderosa pine trees. Variation in antiherbivore defenses among individual ponderosa pines thus appears to be paralleled by variation in genotypes of the scale insects that infest them. If this is the case, then the experiment demonstrates __________.

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#Question id: 10868

#Section 2: Evolution

Which of the following relationships describes competition?

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#Question id: 5161

#General Aptitude

Find the unit digit of 83 × 87 × 93 × 59 × 61.