Respuesta :
2. more birds results in increased biomass
Explanation:
Since birds mostly feed on insects. The increase in number of birds will cause a decrease in insect population.
Now if we consider plant eating insects, the increase in plant eating insect population will result in decrease in biomass of plants because they eat up the plant tissues.
Now relating the above situation we can conclude that if the population of bird increase, they will feed on more and more insects and thus the population of insect will decrease. and in turn, the survivorship or biomass of plants will also increase.
The predicted effect of bird presence on the survivorship or biomass of the plants is B. more birds results in increased biomass.
It should be noted that in a predator-prey relationship, the presence of a predator is vital in controlling the population of the prey.
Based on the complete information, the birds are predators while the grasshoppers are the prey. Therefore, the predators keep control of the population of the prey. Therefore, more birds result in increased biomass. They indirectly control the foraging of grass by the grasshoppers.
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