Resource Acquisition and Osmoregulation

This set of flashcards covers key concepts related to resource acquisition, osmoregulation, and biological principles discussed in the lecture.

What resources do organisms need to survive and reproduce?

Organisms require nutrients and energy to survive and reproduce.

What are the two primary types of organisms based on their resource acquisition methods?

Autotrophs and heterotrophs.

What is Liebig’s Law of the Minimum?

Plant growth is limited not by the total amount of resources, but by the amount of the most scarce resource.

What does Optimal Foraging Theory propose?

It maximizes the energy benefit-to-cost ratio of feeding decisions.

What is the difference between mycorrhizal fungi and rhizobia?

Mycorrhizal fungi form symbiotic relationships with plant roots to enhance nutrient uptake, while rhizobia are bacteria that fix nitrogen in legumes.

In what type of solution does a cell swell?

Hypotonic solution.

What happens to fish in freshwater environments regarding osmoregulation?

Freshwater fish absorb water through their skin and excrete dilute urine.

How do marine fish manage osmoregulation?

They drink seawater and actively transport ions through their gills.

What should you do if stranded in the ocean without fresh water?

You should not drink ocean water due to its high salt content.

What are the consequences of dehydration in humans?

Reduced blood volume and pressure, impaired flow to organs, and potential irregular heartbeat due to salt loss.