Question

Which of the following is not related to locomotion?
(a)Setae
(b)Tendons
(c)Pseudopods
(d)Hydrostatic skeleton
(e)Typhlosole

Answer 1

Plants and animals exhibit a wide range of movements. Methods of locomotion and structures associated with it vary with the habitat of organisms and the demand of the situation. This structure is usually found in the intestine region.

Complete answer:
-Setae are the bristle-like structures that serve in annelid locomotion.
-Tendon is a connective tissue structure. It helps in connecting a muscle to another muscle or a muscle to a bone. It serves to transmit the force generated by a muscle during movement.
-Pseudopods are the outgrowth from the membrane and they aid in locomotion in protists.
-A hydraulic skeleton is found in many soft-bodied animals and is surrounded by muscles to serve in locomotion.
-All the above structures help in the movement of different organisms depending upon their habitat and need.
-A typhlosole is an internal fold of the intestinal wall found in some molluscs, lampreys, and annelids, and echinoderms to serve as an absorption surface. It does not aid in locomotion.
So the correct option is ‘Typhlosole’.

Additional information:
-In some organisms, there are internal folds of the intestine or its inner wall. It is called the typhlosole.
-Its major function is to increase surface area for a more efficient rate of absorption of digested nutrients.
-In an earthworm, typhlosole begins from the 26th segment.
-It runs along most of the length of the organism, forming a tube within a tube.

Note: Movement is one of the significant features of living organisms. Cilia, flagella, and tentacles are present in organisms that help in locomotion. Although plants do not move from one place to another, they have different structures that exhibit different types of movements to meet their needs.