Question

The removal of ‘Keystone’ species will effect
A. The producers
B. The consumers
C. The ecosystem
D. The decomposers

Answer 1

Keystone species play a major role in determining and shaping the ecosystem of the region. It is vital for the ecosystem and has large effects on the ecosystem.

Step by step answer: Keystone species are those organisms which have an extremely high impact on a particular ecosystem relative to the population. In addition, keystone species are vital for the overall structure and function of an ecosystem. They also influence the ecosystem by deciding which other species constitute that particular ecosystem.
-In option A, producers are those organisms which are responsible for making their own food. For example plants. They are also referred to as autotrophs.
-As in option B, consumers are those organisms which consume nutrition from the producers. For example, humans are consumers of meat and plant products.
-As in option C, ecosystem is mentioned. It is a region where all biotic and biotic beings and factors sustain together. For example, a forest is a type of ecosystem.
As in option D, decomposers are those organisms which feed on the dead/decaying material or the feces of the living. For example, the earthworm is a decomposer.
Hence, the correct option is option C

Note: Some of the keystone species are sea star, sea otters, large mammalian animals like jaguars, wolves, and lions. These animals are responsible for consuming some species, excess of which may cause a certain imbalance in those ecosystems. Sea stars are the consumers of mussels, sea otters of sea urchins and the mammalian species consume many prey to maintain the balance.