Gaseous exchange in earthworm & polychaetes
Not what you're looking for?
1. How is gas exchange accomplished by earthworms?
2. What is the function of the nephridia of the molluscs?
4. How does gas exchange take place in marine polychaetes?
5. How does the body organization of crustaceans differ from the body organization of flightless insects?
6. Name and list four characteristics of arthropods that have enabled them to be extremely successful, and describe the adaptive value of each characteristic.
Purchase this Solution
Solution Summary
Gaseous exchange in earthworm occurs through the body surface. Circulatry system is accordingly adapted to receive the gases through the body surface. However, in polychaetes parapodia are used for movement and it act as the annelid's primary respiratory surfaces. The rich blood vessels in the parapodia function as gills providing surface for the gaseous exchange
Solution Preview
1. How is gas exchange accomplished by earthworms?
Respiration in Earthworm takes place by diffusion of gases through the general body surface. The gaseous exchange, i.e., intake of O2 and giving out CO2, takes place between the blood capillaries of the outer epidermis and the surface film of moisture contributed by secreted mucus, excreted wastes and coelomic fluid. Haemoglobin dissolved in the plasma of blood acts as a respiratory pigment, transporting O2 to the body tissues.
2. What is the function of the nephridia of the molluscs?
Nephridia is an excretory organ of molluscs that remove metabolic waste ammonia from body fluids.
3. How does gas ...
Purchase this Solution
Free BrainMass Quizzes
Feeding Babies
Do you know the science behind feeding babies? Test your knowledge with this quiz.
Breast Milk and Breastfeeding
How much do you know about breast milk and breastfeeding? Double check your knowledge level with this quiz!
Understanding the Musculoskeletal system
Introduce and understand basic information how the skeletal system and muscular system work in close concert with one another. And how their interaction between muscle and bone, as they work together to allow us movement.
How Much Do You Know About Genetic Inheritance?
Most of us studied the basics of dominant and recessive genes at some point. However, genetics are much more complicated than this. How far beyond the basics does your knowledge go?
Identifying Variables in Science Experiments, Part 2
Using sample experiments, test yourself to see if you can identify independent, dependent, and controlled variables. Identifying variables is key in understanding and developing experiments. The questions are biology related, but this can be applied to any area of science.