Question

Which statement is incorrect about the pyramid of numbers? A.)The higher the trophic level, the lower the number of species and the larger their size. B.) The higher the trophic level, the higher the number of species and the larger their size. C.)The higher the trophic level, the lower the number of species and the smaller their size. D.)The higher the trophic level, the higher the number of species and the smaller their size.

Answer 1

All statements are incorrect except the letter (A).

The only correct answer is the letter (A): The higher the trophic level, the lower the number of species and the larger their size

Step-by-step explanation:

The pyramid of numbers, is a graphical representation that shows the number of organisms at each tropic level. The reason it's a pyramid, is because there must always be enough species from the bottom of the pyramid, to provide food, to animals that are in higher levels. For example: on the lowest trophic level, we can find plants, on the next level we can find grasshoppers that feeds of plants, but grasshoppers are fewer in number. On the next trophic level, we can find rats that feeds of grasshoppers, but rats are fewer in number. On the next trophic level, we can find snakes that feeds of rats, but snakes are fewer in number. Finally, on the highest trophic level, we can find hawks that feeds of snakes, but hawks are fewer in number. In conclusion, we could state that the higher the trophic level, the lower the number of species and the larger their size.

Answer 2

Correct answer: A.)The higher the trophic level, the lower the number of species and the larger their size

The pyramid of number is always inverted, it is because it might be the case that the single plant may support the growth of a lot of herbivores which in turn provide nutrition to many parasites. Hence, the number of organisms is showing an increase thus making the pyramid inverted.

So, the correct answer would be option A.