Which of the following are true regarding the basal body of bacterial flagella?

#Question id: 11411

#XL - T Zoology

Vulnerability to extinction can be linked to species following characteristics. Which of the following statement are correct?

 A. Rare species are more prone to extinction than common ones.

 B. Species that are capable of migrating between fragments of habitat, such as between mainland areas and islands, may be more resistant to extinction

 C. Organisms that are specialists are more likely to go extinct

 D. Species with naturally long life spans may be more likely to become extinct

#Question id: 11412

#XL - R Botany

following is criteria to qualify Hot spot.

a) r-selected species

b) High numbers of endemic species

c) Many different types of habitats

d) k- selected species

#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