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प्रश्न
In Pheretima locomotion occurs with the help of ______.
विकल्प
circular muscles
longitudinal muscles and setae
circular, longitudinal muscles and setae
parapodia
उत्तर
In Pheretima locomotion occurs with the help of circular, longitudinal muscles and setae.
संबंधित प्रश्न
How useful is the study of the nature of body cavity and coelom in the classification of animals?
What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
Write in brief about progressive changes in animal classification.
Label the body organization of human in the following figure:
The following characteristics are essential for classification.
The largest division of the living world is ______.
Match the following columns and select the correct option.
| Column – I | Column – II | ||
| (p) | Pila | (i) | Devil fish |
| (q) | Dentalium | (ii) | Chiton |
| (r) | Chaetopleura | (iii) | Apple snail |
| (s) | Octopus | (iv) | Tusk shell |
Compare Schizocoelom with enterocoelom.
Identify the structure that the archenteron becomes in a developing animal.
Observe the animal below and answer the following questions.
- Identify the animal.
- What type of symmetry does this animal exhibit?
- Is this animal Cephalized?
- How many germ layers does this animal have?
- How many openings does this animal’s digestive system have?
- Does this animal have neurons?
______ is a fluid-filled body cavity.
Which organism is called Friends of farmers? Why?
In some animal groups, the body is found divided into compartments with serial repitition of at least some organs. This characteristic feature is called ______.
Which group of chordates possess sucking and circular mouth without jaws?
Differentiate between a diploblastic and a triploblastic animal.
Differentiate between open circulatory system and closed circulatory system
Sort out the animals on the basis of their symmetry (radial or bilateral) coelenterates, ctenophores, annelids, arthropods, and echinoderms.
Animal with bilateral symmetry in ______.
