The Biological Role of Osmosis

The video explains the role of osmosis in living organisms, highlighting its importance in plant water absorption and animal cell hydration. It also covers osmoregulation, focusing on how marine fish manage salt levels in their bodies to maintain homeostasis.

What is the primary role of osmosis in plants?

• To protect against pests

• To draw water needed for photosynthesis

• To produce energy

• To absorb nutrients from the soil

How do animals primarily get water into their cells?

• Through photosynthesis

• Via osmosis

• By drinking water

• Through active transport

What is osmoregulation?

• The opening and closing of stomata

• The movement of water through a membrane

• The process of photosynthesis

• The regulation of solute concentrations in body fluids

Why do marine fish need to osmoregulate?

• To increase their body temperature

• To prevent water loss in a hypertonic environment

• To enhance their swimming speed

• To absorb more salt

How do marine fish maintain healthy solute concentrations?

• By drinking more water

• By reducing their salt intake

• By actively transporting ions out through their gills and kidneys

• By increasing their internal salt concentration