Which technique is commonly used to determine the three-dimensional conformation of a protein?

#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 __________.

#Question id: 11426

#XL - R Botany

Which of the following biomes is associated with a mediterranean climate?

#Question id: 11444

#XL - R Botany

Ecologist have proposed following explanation to lead maximize biodiversity at tropic.

A. Higher productivity in the tropics allows for more species present

 B. Old communities have greater species than younger community

 C. Natural enemies such as predators and parasite limit competition in the tropics, which allows more species to coexist

D. Very less intensity of disturbances in the tropics promote high succession diversity

#Question id: 11474

#XL - T Zoology

The blind spot in the human retina is the location that has the collected axons of ________.