A Living Earthworm Keeps Protruding And Retracting Its Buccal Chamber To
1)Help in excretion of metabolic wastes
2)Assist in locomotion
3)Help in respiration
4)Capture earth particles
Answers
Answer:
An earthworm is an invertebrate belonging to the phylum Annelida. They are found in the soil and make it fertile. They feed on dead organic matter. Pheritima and Lumbricus are the common earthworms found in India. The main characteristics of an earthworm are:
Long, cylindrical and segmented body
It is a hermaphrodite, having both male and female sex organs
It has a hydrostatic skeleton
It has a central and peripheral nervous system
The setae present in the epidermal pits help in locomotion
The epidermis is made up of columnar epithelial cells. It has secretory gland cells
The digestive system runs along the body
It respires through the skin
It has a closed type of blood vascular system, which is made up of capillaries, vessels and a heart
Explanation:
4)Capture earth particles
ExPlanation:
As,earthworms are annelida, they have there different structure of digestion as well, when it eats something, then the ingestion like anyother organisms is done in the mouth now, this mouth open in the buccal chambers, just like our buccal chamber holds food particles during ingestion same happens with earthworms too. So, their buccal chamber captures earth particles and these earth particles are nothing but food particles.
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