Excretion in Hydra occurs primarily through the process of diffusion, as these simple organisms lack specialized excretory structures. Waste products, including nitrogenous wastes, diffuse directly from the cells into the surrounding water, which is isotonic to their internal environment. This method of excretion is efficient for Hydra, as they inhabit aquatic environments where waste can easily disperse. Additionally, the constant flow of water through their body aids in the removal of metabolic wastes, ensuring that toxic substances do not accumulate
What is the primary method of excretion in Hydra?
The primary method of excretion in Hydra is diffusion, as they lack specialized excretory structures
What types of waste products do Hydra excrete?
Hydra excrete nitrogenous wastes, primarily in the form of ammonia, along with other metabolic wastes
How does the surrounding environment affect the excretion process in Hydra?
Hydra live in isotonic aquatic environments, allowing waste products to diffuse easily into the surrounding water
Why is diffusion an effective method of excretion for Hydra?
Diffusion is effective for Hydra because they are small and live in water, where waste can disperse quickly, preventing toxic accumulation
What role does water play in the excretion process of Hydra?
Water facilitates the removal of metabolic wastes by providing a medium for diffusion and helping to maintain osmotic balance
What is the primary method of excretion in Hydra?
a) Filtration
b) Diffusion
c) Active transport
d) Osmosis
Answer: b) Diffusion
Which nitrogenous waste product is primarily excreted by Hydra?
a) Urea
b) Uric acid
c) Ammonia
d) Creatinine
Answer: c) Ammonia
How do Hydra maintain osmotic balance in their aquatic environment?
a) By excreting urea
b) Through diffusion of waste products
c) By absorbing salts
d) By using specialized excretory organs
Answer: b) Through diffusion of waste products
What type of environment do Hydra inhabit that aids in their excretion process?
a) Terrestrial
b) Aquatic
c) Aerial
d) Desert
Answer: b) Aquatic
Do Hydra possess specialized excretory structures?
a) Yes, they have kidneys
b) Yes, they have nephridia
c) No, they lack specialized structures
d) Yes, they have Malpighian tubules
Answer: c) No, they lack specialized structures