What is the habitat of Oligochaeta?
Oligochaetes are common all over the world. They live in the sea, in fresh water, and in moist soil.
Are oligochaetes hermaphroditic?
All oligochaetes are hermaphrodite, and most species possess a single pair of ovaries, although these may be duplicated in a few species. The ovaries are attached to a septum and each consists of a basal zone, a zone of proliferation, and a distal region filled with vitellogenic oocytes surrounded by flattened cells.
What are characteristics of earthworms?
Earthworms are soft-bodied, segmented worms, usually pink, brown or red in color and only a few inches long. They burrow deep in the ground during the day and resurface at night to feed.
What are the characteristics of class Hirudinea?
leech, (subclass Hirudinea), any of about 650 species of segmented worms (phylum Annelida) characterized by a small sucker, which contains the mouth, at the anterior end of the body and a large sucker located at the posterior end. All leeches have 34 body segments.
Which of the following is an oligochaete characteristic?
Characteristics of Oligochaeta Oligochaete worms have long, segmented, tubular bodies, giving them the appearance of a piece of thick spaghetti. They can range in length from just a few millimeters to over 10 feet!
What physical characteristics do all oligochaetes have in common?
Oligochaete worms have long, segmented, tubular bodies, giving them the appearance of a piece of thick spaghetti. They can range in length from just a few millimeters to over 10 feet! You won’t find a head or any limbs on these guys either, but they can still get around pretty well by peristalsis.
What is the difference between polychaetes and oligochaetes?
The main difference between polychaetes and oligochaetes is that the polychaetes have a pair of parapodia per body segment that bear many bristles. But, oligochaetes have few bristles on their outer surface of the body but, no parapodia. Polychaetes and oligochaetes are two subclasses of phylum Annelida.
What are 5 characteristics of worms?
They have five paired organs that act like hearts to pump their blood through large blood vessels. They have a brain and nerve cord. They have reproductive organs and waste-removal organs. Well-developed muscles let the worms crawl through the soil or on top of the ground.