Following statements are regarding to the regulation of body temperature.

A. The temperature-regulating center is located in the anterior hypothalamus. This center receives information about environmental temperature from thermoreceptors in the skin and about core temperature from thermoreceptors in the anterior hypothalamus itself.

B. The temperature-regulating center is located in the posterior hypothalamus. This center receives information about environmental temperature from thermoreceptors in the posterior hypothalamus itself and about core temperature from thermoreceptors in the skin.

C. If core temperature is below the set-point temperature, then heat-generating and heat-retaining mechanisms are activated.

D. If core temperature is above the set-point temperature, then heat-dissipating mechanisms are activated.

E. If core temperature is below the set-point temperature, then heat-dissipating mechanisms are activated.

F. If core temperature is above the set-point temperature, then heat-generating and heat-retaining mechanisms are activated.

Which of the following combination is correct?

#Question id: 11405

#10. Ecological Principles

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

A. Endemism species are more prone to extinction than fragmented

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. Population variability species are less prone to extinct

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

#Question id: 11406

#10. Ecological Principles

Which of the following is true for a critically endangered species?

#Question id: 11407

#10. Ecological Principles

Which of the following is incorrect statement?

#Question id: 11408

#10. Ecological Principles

According to IUCN red list criteria , a species would be classified on the basis of following criteria are a- >50 decline in population during last 10 year b-occur in area less than 20,000 sq km c- total adult population less than 2500 Above observation which of the following class of IUCN

#Question id: 11409

#10. Ecological Principles

Species characteristics that make them less prone to extinction are listed below:

A. Narrow niche and specialized

B. High dispersal power

C. High trophic status

D. Long life span

Which of the following is the correct combination?

#Question id: 11410

#10. Ecological Principles

Biodiversity hot spots, those areas with the greatest number of endemic species. Which of the following criteria to qualify as a hot spot region?

A. It must contain at least 1,500 species of vascular plants as endemics

B. It must have lost at least 70% of its original habitat

C. It must contain at least 500 species of bird species

D- It must contain high numbers of species