The swordfish contains a heat generating organ that warms its brain and eyes up to 14°C above the surrounding ocean water temperature. Which structures are most likely to be found at relatively high concentrations within the cells of this heat generating organ? A. nuclei
B. chloroplasts
C. chromosomes
D. mitochondria

The mitochondria of a cell use up oxygen and nutrients from the body and convert them into energy and heat. The heat is used to maintain the temperature of the organs and body. Hence, the heat-generating organ would have the organelles, mitochondria, in abundance in its cells.

answer; i believe the correct answer is (sporophyte);

true is the