EASY
Earn 100
Earthworm has
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Important Questions on Structural Organisation in Animals
MEDIUM
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.
EASY
The chloragogen cells of coelomic fluid in earthworm are analogous with ________ of vertebrates.
HARD
Consider the following statements:
(i) The body wall of an earthworm is covered externally by a thin, non-cellular cuticle, below which lies epidermis.
(ii) The epidermis of an earthworm is made up of a single layer of columnar epithelial cells which contain secretory gland cells.
(iii) The setae are present in all segments of the body of earthworm.
(iv) Septal nephridia are present in first 14 segments in Pheretima.
Which of the above statements are correct?
MEDIUM
Which of the following is an incorrect statement?
EASY
Which of the following is correct w.r.t. the dorsal blood vessel in Pheretima?
EASY
In earthworm, setae are made up of
MEDIUM
Identify the wrong statements w.r.t. the digestive system of Pheretima?
EASY
The intestine of earthworm has a pair of short and conical intestinal caeca projecting out from segment
MEDIUM
The locomotion in earthworm takes places with the help of:
MEDIUM
If the dorsal pores of the earthworm are blocked, then which of the following functions are affected first?
EASY
Earthworms are useful to humans because
EASY
Each cocoon of Pheretima produces ______ baby worms on an average.
EASY
In earthworm the nerve cord is
MEDIUM
Identify the correct labelling of the diagram given below.
MEDIUM
The chromophil cells of the pharynx in earthworm:
EASY
In earthworm, nephridia are present in all segments of the body except
EASY
________segments of Pheretima has clitellum.
EASY
The earthworm has a central nerve cord which is
EASY
An important structure present is the 8th segment of Pheretima that helps in crushing food is:
MEDIUM
Identify the wrong statement w.r.t. earthworm.
