0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

The structure in earthworm which serves as a wedge to force open cracks in the soil is

  1. Peristomium
  2. Prostomium
  3. Typhlosole
  4. Setae

A
Peristomium
B
Typhlosole
C
Prostomium
D
Setae
Solution
Verified by Toppr

The correct option is D Prostomium
1. The first segment of the earthworm body is called peristomium or buccal segment which bears crescentic mouth. It bears a fleshly lobe-like structure called prostomium which hangs over the mouth ventrally. It is called the boring part as it bores in soil.
2. Setae are locomotory organs of earthworm.
3. Typhlosole enhances the intestinal absorption area in earthworms.
So, the correct option is 'Prostomium'.

Was this answer helpful?
0
Similar Questions
Q1
The structure in earthworm which serves as a wedge to force open cracks in the soil is

View Solution
Q2
Following are the statements about prostomium of earthworm.

(a) It serves as a covering for the mouth.
(b) It helps to open cracks in the soil into which it can crawl
(c) It is one of the sensory structures.
(d) It is the first body segment.

Choose the correct answer from the options given below.
View Solution
Q3
Which soil develops deep cracks in hot weather, which helps in proper aeration of the soil?
View Solution
Q4
Earthworm burrow underground by the means of waves of muscular contraction. Which structure helps in movement and in holding the soil?
View Solution
Q5
A newly opened glass elevator in a Dubai tourism spot has been closed by tourism officials after cracks appeared in the structure at the height of the week-long Ramadan holidays. The glass elevator in Burj Arab's scenic area had been supporting dozens of tourists on Monday when the cracks on its floor appeared with a loud bang. A single pane of the 3m-long section shattered into coin-sized segments and fell from a great height on the ground, according to footage on state broadcaster CCTV. The area's management bureau said on its micro blog on Thursday that there was no threat to safety because only one of the three layers of glass that make up the elevator floor was damaged.
View Solution