Science
Study the food chain given below and answer the questions that follow
(a) If the amount of energy available at the third trophic level is 100 joules, then how much energy will be available at the producer level? Justify your answer.
(b) Is it possible to have 2 more trophic levels in this food chain just before the fourth trophic level? Justify your answer.
Answer
(a) According to the rule of flow of energy, 10% of energy is available for the next trophic level. Therefore, 10000 J of energy will be available at producer level if the amount of energy available at the third trophic level is 100 joules.
(b) No, it is not possible to have 2 more trophic levels in this food chain just before the fourth trophic level because the loss of energy at each step is so great that very little usable energy will remain after 4 trophic levels.
Related Questions
A piece of wire of resistance R is cut into three equal parts. These parts are then connected in parallel. If the equivalent resistance of this parallel combination is R1, what is the value of the ratio R1 : R?
Refer to the image below and state how the magnetic field pattern indicates regions where the magnetic field is stronger outside the magnet? What happens to the magnetic field when the current in the circuit is reversed?
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
MnO2 (s) + Al(s) ⟶ Mn(l) + Al2O3(s) + Heat
(a) Give reason why the above reaction is known as a thermite reaction.
(b) Identify the substance oxidised and reduced in the above reaction.
(c) Give a reason why Aluminium is preferably used in thermite reactions.
An element 'M' with electronic configuration 2 8 3 combines separately with Cl-, SO4-2 anions. Write the chemical formulae of the compounds formed. Predict with the suitable reason the nature of the bond formed by element 'M' in general. How will the electrical conductivity of the compounds formed vary with respect to 'M'?