When a consumer eats a producer, 10 percent of the producer’s energy is passed on to the consumer trophic level. What happens to the other 90 percent? (1 point)
It is consumed and used by the consumer.
It is used by the producer to pass on to the next trophic level.
It is used for cell processes or released as heat. It is added back to the soil by decomposers.
It is used for cell processes or released as heat.
Why is there less biomass at the top of the energy pyramid?
(1 point)
Secondary and tertiary consumers live longer, so there are fewer of them because they reproduce more slowly.
Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.
Secondary and tertiary consumers have bigger ranges, so there are fewer of them because they each need a lot of space.
Secondary and tertiary consumers are larger, so there are fewer of them.
Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.
Using the ten percent rule, determine how many kilocalories of energy the tertiary consumer tuna will receive.
Algae
Shrimp
Lantern Fish
Tuna
135,000 Kcal
135 Kcal 135,000 Kcal 1,350 Kcal 13,500 Kcal
The tertiary consumer tuna will receive 1,350 kilocalories of energy.
Read the following statements about various species of plants and animals. Based on these statements, which one would most likely be classified as an invasive species? (1 point)
Species D, native to Eurasia, has been released in various American states to combat the invasive plant, purple loosestrife.
Species B is from Europe and can sting people. This species is often farmed in America for their ability to pollinate and provide honey.
Species C, a plant from Japan, was introduced as a foliage crop and to reduce soil erosion. It grows up to a foot per day, smothering low-growing plants and killing trees.
Species A is a plant from Eurasia. It is often considered a weed by homeowners and killed off by using an herbicide. This plant can be consumed in salads or as a tea and is the first food resource for bees in the spring.
Species C from Japan, which grows rapidly and smothers native plants, would most likely be classified as an invasive species.
Use the following formula to find the efficiency of energy transfer between the harbor seal (2,500 Kcal) and a polar bear (375 Kcal).
(Energy level transfered to next level) " 100 (Total energy input)
(1 point)
15% 12% 20% 10%
By using the formula provided, the efficiency of energy transfer between the harbor seal and the polar bear is:
(375 Kcal / 2,500 Kcal) * 100 = 15%
Therefore, the efficiency of energy transfer is 15%.