Following is different type of interaction was shown in figure. (+: Benefit , - Harm , 0= Neither benefit nor harm) What is interaction between column A & B in each schematic?

#Question id: 10836

#Section 2: Evolution

Which of the following is an example of a plant morphological defence?

#Question id: 10686

#Section 2: Evolution

 Following figure are shown figure of predator prey model 

Following some observation are given

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

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

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

D) 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: 12687

#General Aptitude

#Question id: 11173

#Section 1: Ecology

Chemical signals between individuals of the same species are called

#Question id: 3404

#Section 2: Evolution

A graph shows the frequency distribution of the character (body size). B graph shows the relation between body size and fitness, within one generation, and the third the expected change in the average for the character over many generations (if body size is inherited). Which of the following correct figure for Average size with respect to time?