Best example of co-evolution
[A] Fig trees and pollinator species of wasp
[B] Fungus and cyanobacteria
[C] Sea anemone and clown fish
[D] All of them
Fruit of fig species provide
[A] Egg laying site to female wasp for oviposition
[B] Developing seed as food for the developing wasp larvae
[C] Both (a) and (b)
[D] None of these
Select incorrect statement
[A] The mediterranean orchid ophrys employs sexual deceit to get pollinated
[B] In mycorrhazial association, fungi help the plant in the absorption of essential nutrients from the soil
[C] Pinus seeds cannot germinate and establish without the presence of mycorrhizae
[D] When resources are unlimited, the growth is usually logistic but when resources become progressively limiting, the growth pattern turns exponential
In Ophrys, one petal of female flower bears an uncanny resemblance to the female of the bee in which of the following aspect.
In which of the following interaction only one of the species benefited
[C] Parasitism and Predation
Which of the natural habitat on earth that is inhabited just by a single species
[A] Hot vents
[C] Polar region
Following breeds many times during their lifetime except
[D] Pacific salmon fish
Which of the following produce large number of small sized off springs?
[B] Pelagic fishes
[D] Both (a) and (b)
Populations evolve to maximize their
[A] Health fitness
[B] Body fitness
[C] Mental fitness
[D] Reproductive fitness
Find out correct statement
[A] Under particular set of selection progresses, organism evolve towards the most efficient reproductive strategy
[B] In amensalism, one species is farmed whereas other is benefited
[C] Some species of insects and frogs are cryptically coloured (camouflaged) to avoid being detected easily by the prey
[D] ‘Biological Control’ methods adopted in agricultural pest control are based on the ability of the prey to regulate predator population
Biotic potential refers to
[A] Increase of population under optimum conditions.
[B] Increase of population under given conditions.
[C] Increase of population under natural conditions.
[D] Increase of population under climatic conditions.
A population has more young individuals compared to the older individuals. What would be the status of the population after some years?
[A] It will decline
[B] It will stabilise
[C] It will increase
[D] It will first decline and then stabilise
What parameters are used for tiger census in our country’s national parks and sanctuaries?
[A] Pug marks only
[B] Pug marks and faecal pellets
[C] Faecal pellets only
[D] Actual head counts
Which of the following would necessarily decrease the density of a population in a given habitat?
[A] Natality > mortality
[B] Immigration > emigration
[C] Mortality and emigration
[D] Natality and immigration
A protozoan reproduces by binary fission. What will be the number of protozoans in its population after six generations?