a) 

What is the man regarded as in the food chain operating in an ecosystem?
A Consumer
B Producer
C Producer and consumer
D Producer and decomposer

 

                                                                   OR

b)

When a frog eats a grasshopper, where does the energy transfer occur?
A Producer to decomposer
B Producer to primary consumer
C Primary consumer to secondary consumer
D Secondary consumer to primary consumer

a) 

With regard to various food chains operating in an ecosystem, man is a consumer. Consumers are all organisms dependent on plants and other organisms for food. There are three types of consumers.  

Primary consumers are those who eat plants.  

Secondary consumers are predators who eat meat. 

Tertiary consumers are top predators who feed on secondary consumers.  

Hence, the correct option is (a) Consumer. 

                                                                               OR

b) Plants are eaten by grasshoppers; hence the grasshopper is the primary consumer. A frog eats the grasshopper, so the frog becomes the secondary consumer. The energy transfer is from the primary consumer to the secondary consumer, i.e., from the grasshopper to the frog. So the food chain represents the plants as producers, grasshoppers as primary consumers and frogs as secondary consumers. 

​​Plants ➡ Grasshopper     ➡      Frog​ 

(Producer) (primary consumer)    (secondary consumer) 

Hence, the correct option is (c) Primary consumer to secondary consumer.