NEET-UG Biology · Class 11
Earthworm - morphology and anatomy — NEET & JEE Questions
Earthworm - morphology and anatomy is a topic in Structural Organisation in Animals, a Class 11 Biology chapter of the NEET-UG syllabus. TestBudy holds 12 published NEET-UG questions on Earthworm - morphology and anatomy, each with the marking scheme of the real paper.
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Earthworm - morphology and anatomy MCQs with solutions
10 of the 12 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
The body of an earthworm is externally divided into a series of
- A. metameric segments
- B. jointed appendages
- C. shell chambers
- D. radial arms
Which structure in an earthworm helps grind ingested food before it passes into the intestine?
- A. Pharynx
- B. Gizzard
- C. Crop
- D. Typhlosole
The clitellum of an adult earthworm is primarily associated with
- A. reproduction and cocoon formation
- B. digestion
- C. locomotion by itself
- D. blood filtration only
Setae in an earthworm chiefly help in
- A. locomotion by providing grip against the substratum
- B. photosynthesis
- C. pumping blood
- D. gas exchange through gills
Following are the statements about prostomium of earthworm. (1) It serves as a covering for mouth. (2) It helps to open cracks in the soil into which it can crawl. (3) It is one of the sensory structures. (4) It is the first body segment. Choose the correct answer from the options given below.
- A. (2) and (3) are correct
- B. (1), (2) and (3) are correct
- C. (1), (2) and (4) are correct
- D. (1), (2), (3) and (4) are correct
An animal has a long segmented body, no jointed legs and numerous tiny setae used for movement. It is most consistent with
- A. an earthworm
- B. a cockroach
- C. a frog
- D. a sponge
Earthworms exchange respiratory gases mainly through
- A. their moist body surface
- B. lungs
- C. tracheae
- D. gills throughout adult life
The circulatory system of an earthworm is described as closed because
- A. blood remains within vessels during circulation
- B. blood directly bathes all tissues in an open haemocoel
- C. the heart is absent
- D. circulation stops during locomotion
Why is a moist skin essential for earthworm survival?
- A. Respiratory gases must dissolve before diffusing across the body surface
- B. Setae can function only underwater
- C. The digestive tract absorbs oxygen directly
- D. Moisture converts the closed circulation into an open one
An earthworm's alimentary canal runs longitudinally through the body. Which statement is most consistent with its feeding biology?
- A. It has a complete digestive tract with separate mouth and anus
- B. It has only a gastrovascular cavity with one opening
- C. It digests food entirely outside the body
- D. It lacks a digestive system
Common mistakes in Earthworm - morphology and anatomy
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Confuses excretory nephridia with digestive or locomotory structures.
- Uses one shared feature such as bilateral symmetry instead of the full diagnostic combination.
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