Adaptations of the respiratory structures

Respiration of Amoeba sp.

OTHER UNICELLULAR ORGANISM THAT HAVE THE SAME RESPIRATORY ADAPTATION AS AMOEBA

Why they are the same ? They are protozoa They are one cell thick They are unicellular

organisms

Kingdom Protista

Phylum Protozoa

Class Sarcodina

Subclass Rhizopoda

order Amoebida

family amoebidae

Genus Amoeba

Species Proteus , animalcule, dubia ,etc

Classification of Amoeba

Amoeba Proteus / Chaos diffluens Closely related to giant

amoeba Commonly bought at

science supply stores

Chaos Carolinense / giant amoeba

Largest and best known species

About 5mm Has thousands of

nucleus even amoeba normally has 1

Dictyostelium discoideum

Soil-living amoeba

Structure of Amoeba sp.

Question : Where did the oxygen comes from ?

Answer : Simple diffusion

CONCENTRATION GRADIENT

Respiration process in amoeba

• external surface of amoeba provide adequate surface area to volume

Surface area volume

Rate of respiration

• amoeba has large surface area compared to bodies .

• Simple diffusion is sufficient to transport the gas around , into and out of their bodies.

• Aquatic habitats ensure that plasma membrane is constantly moist , so respiratory gases can easily dissolve and diffuse across the respiratory surface

• Amoeba has a thin plasma membrane – allows rapid diffusion of gases

• large surface area – ensure a maximum contact with respiratory medium

Characteristic Protozoa - Amoeba

Respiratory system none

Respiratory organ none

Respiratory structure for gaseous exhange

Plasma membrane

Respiratory openings none

Network of blood capillaries none

Passage of respiratory gases none

THE END THANK YOU