Select wrong statement :

Question

Accepted Answer

Option 3 is the correct answer because the term "ecosystem" was not coined by Odum. The term "ecosystem" was actually coined by Sir Arthur Tansley in 1935. Tansley introduced the concept to describe the complex interactions between living organisms and their physical environment, emphasizing the flow of energy and nutrients. While Eugene Odum is a prominent ecologist known for his work in ecosystem ecology and for popularizing the concept, he did not coin the term.

Now, let's explain why each of the other options is incorrect:

1. **Option 1**: "The storage of energy at consumer level is known as secondary productivity."  
   This statement is correct. Secondary productivity refers to the rate at which consumers (such as herbivores, carnivores, and decomposers) convert the energy they obtain from consuming other organisms into their own biomass. It is a measure of energy storage at the consumer level.

2. **Option 2**: "In any ecosystem maximum energy is stored at producer level."  
   This statement is correct. In an ecosystem, producers (such as plants and algae) capture solar energy through photosynthesis and convert it into chemical energy stored in organic molecules. This energy forms the base of the food chain, and the majority of energy in an ecosystem is stored at the producer level.

3. **Option 4**: "Rate at which organic molecules are formed in an autotroph is called gross primary productivity."  
   This statement is correct. Gross primary productivity (GPP) is the total rate at which autotrophs, like plants and algae, convert light energy into chemical energy in the form of organic molecules through photosynthesis. It represents the total energy captured by autotrophs before accounting for energy used in respiration.

In summary, Option 3 is the correct answer because it inaccurately attributes the coining of the term "ecosystem" to Odum, whereas it was actually coined by Sir Arthur Tansley. The other options accurately describe ecological concepts.