Which characteristic is found in the whale but not in the phytoplankton?

Heterotrophic

Explanation: Phytoplanktons can be defined as the microscopic organisms found on the top of the water bodies that has the ability to trap solar energy and make food.

This ability of the organism to make its own food can be defined as photosynthesis  which is an autotrophic mode of nutrition.

Here, the whale differs from the phytoplankton in terms of mode of nutrition. Whale has heterotrophic mode of nutrition as it depends on other organism for its food. It basically feeds on the smaller fishes for its survival.

a. the production of carbon dioxide through the process of photosynthesis

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.