Predator has carrying capacity

Following some observation are given

The number of prey, N, increase at low predator densities, P, and decrease at high predator densities

Prey zero isoclines is depends on the ratio of the growth rate of prey to the capture efficiency of the predators

 Number of predator needed for prey isoclines is depends on the ratio of the death rate of predators to the conversion efficiency of predators

Number of predator for prey isoclines depends on the ratio of the death rate of prey to the conversion efficiency of predators

Which of the above observation are true?

#Question id: 10698

#Unit 10. Ecological Principles

Parasite and predator have long been associated with their respective host and prey respectively. Which of the following is correct statement?

A. Body size of parasite is always smaller than host but predator usually larger than prey

b- Predator immediately kill their prey but parasite may or may not be kill their host

c- Intrinsic rate of parasite is faster than host but intrinsic rate of predator is slower than prey

d- Body association time between parasite and host is more than time association between predator and prey

#Question id: 10699

#Unit 10. Ecological Principles

Two plant species co-occur in a prairie. Species X always occurs near species Y. However, species Y often occurs in isolation from species X and produces more seeds when alone than when growing next to species X. Which of the following interactions between species X and Y could generate this pattern?

#Question id: 10700

#Unit 10. Ecological Principles

Which of the following most important conclusion from the graph?

#Question id: 10701

#Unit 10. Ecological Principles

In community, two species A and B were found. A species have an especially large impact on the structure of entire communities because they are highly abundant while B species are not usually abundant in a community however; exert strong control on community structure by their pivotal ecological roles, or niches. Which of the following is naming of species?

#Question id: 10702

#Unit 10. Ecological Principles

Species A has a large effect on community because of its abundance in community known as

#Question id: 10703

#Unit 10. Ecological Principles

Keystone predators can maintain species diversity in a community if they