Members of two different species possess a similar-looking structure that they use in a similar way to perform about the same function. Which of the following would suggest that the relationship more likely represents homology instead of convergent evolution?

#Question id: 11413

#XL - T Zoology

Which of the following is NOT an attribute of a species that makes it vulnerable to extinction?

#Question id: 11415

#XL - R Botany

Below is a list of various bird groups, with their typical age at maturity (in years). Which of these would you expect to have the greatest annual survival?

#Question id: 11416

#XL - R Botany

Which of the following biomes spans the largest annual mean temperature range, but the narrowest mean precipitation range?

#Question id: 11419

#XL - R Botany

There are more species in tropical areas than in places more distant from the equator. This is probably a result of

a) more predators and parasites

b) more dispersed annual solar radiation compared to the poles

c) more frequent ecological disturbances over a longer time span

d) a longer time frame without disturbances for evolution and speciation

#Question id: 11422

#XL - R Botany

The values of temperature and precipitation used to define climate zones correspond to the conditions of moisture and cold stress that are particularly important determinants of plant form. Which of following is correct combination of Biome?

#Question id: 11424

#XL - R Botany

In robert h. Whittaker's approach to relating terrestrial biomes and climatic variables, the principal biomes fall in a triangular area that does not include climates with __________.