BOTANY

BOTANY

PLANT ECOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
According to this simple lake food chain below, which of these organisms is a tertiary consumer?Algae
A
Pike
B
Perch
C
Dragonfly larvae
D
Mosquito larvae
Explanation: 

Detailed explanation-1: -The organisms that eat the secondary consumers are called tertiary consumers. These are carnivore-eating carnivores, like eagles or big fish. Some food chains have additional levels, such as quaternary consumers (carnivores that eat tertiary consumers).

Detailed explanation-2: -In a freshwater aquatic ecosystem like a pond, the organisms in the food chain include algae, small animals, insects and their larvae, small fish, big fish and a fish-eating bird or animal (Figure 8.4). A food chain always begins with producers. Herbivores (plant-eaters) come next in the chain.

Detailed explanation-3: -Mosquito larvae are the primary consumers in the above food chain. The third stage is a carnivore or omnivore which eats the primary consumer. This is called the secondary consumer and is dragonfly larvae in the above food chain. There may be additional consumers here which would be called tertiary and quaternary.

Detailed explanation-4: -In a pond, green algae are the primary producers. Green algae are consumed by mosquito larvae, which therefore become the primary consumers. Mosquito larvae are consumed by fish, which then become the secondary consumers.

There is 1 question to complete.