Question

decomposers & detritivores
trophic level 1 producers 10,000kcal
2 primary consumers kcal
3 secondary consumers kcal
4 tertiary consumers kcal
energy loss
this is known as the 10% energy transfer rule! complete the missing numbers to show this rule. add doodles for each trophic level!
most energy is lost as ___ which is produced during cellular ____ some energy is also lost when an organism _ without being eaten, and when parts of an organism are either not _ or are not ______ e.g. bones.
© emmatheteachie 2022

Explanation:

For the energy transfer (10% rule) calculations:

Step1: Find energy for Primary Consumers (Level 2)

Producers (Level 1) have 10,000 Kcal. The 10% rule means primary consumers get 10% of producers' energy.
$10,000 \times 0.1 = 1000$ Kcal.

Step2: Find energy for Secondary Consumers (Level 3)

Primary consumers have 1000 Kcal. Secondary consumers get 10% of that.
$1000 \times 0.1 = 100$ Kcal.

Step3: Find energy for Tertiary Consumers (Level 4)

Secondary consumers have 100 Kcal. Tertiary consumers get 10% of that.
$100 \times 0.1 = 10$ Kcal.

For the energy loss blanks:

Most energy is lost as heat (produced during cellular respiration). Some energy is lost when an organism dies without being eaten, and when parts of an organism are either not eaten or are not digested (e.g., bones).

Answer:

s (Energy Transfer):

• Primary Consumers (Level 2): $\boldsymbol{1000}$ Kcal
• Secondary Consumers (Level 3): $\boldsymbol{100}$ Kcal
• Tertiary Consumers (Level 4): $\boldsymbol{10}$ Kcal