« previous next »

Author Question: Excretory structures known as protonephridia are present in A) flatworms. B) ear (Read 679 times)

j_sun

  • Sr. Member
  • ****
  • Posts: 384
on: Sep 17, 2013
Excretory structures known as protonephridia are present in
A) flatworms.
B) earthworms.
C) insects.
D) vertebrates.
E) cnidarians.


sammy

  • Hero Member
  • *****
  • Posts: 818
Reply #1 on: Sep 21, 2013
I remember it was A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

j_sun

  • Sr. Member
  • ****
  • Posts: 384
Reply #2 on: Oct 15, 2013
Thanks dude! Marking this solved.


« previous next »
 

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

The ear and its anatomic structures. The ear and its anatomic structures.
Assessing structures of the mouth. Assessing structures of the mouth.
The three major structures of the medial temporal lobe, illustrated in the monkey brain: the ... The three major structures of the medial temporal lobe, illustrated in the monkey brain: the ...
Structures of the external eye Structures of the external eye
Student opening present Student opening present
Structures of nucleoside diphosphates and triphosphates Structures of nucleoside diphosphates and triphosphates
Video: Glycolysis - Introduction to ATP and the burning of sugar

For a complete list of videos, visit our video library