dorsal furrow meaning in Hindi

Examples

1. It is erectile and kept in a dorsal furrow at rest.
2. Unlike in many other bat species, there is no dorsal furrow between the nares, and the rostrum has been described as " inflated ".
3. Males have evolved suction cup structures on their forelegs to help grasp females; females have counter-evolved setose dorsal furrows to impede forceful copulation.
4. The rear lobe ( M3 ) is  longer than both others together, and the furrow is directed outward and slightly forward from the dorsal furrow.
5. Basically, many sex-specific morphological adaptations ( for example, in Dytiscidae diving beetles, females have setose dorsal furrows that males do not and males have suction cups on their forelegs that females do not ) are sexual dimorphisms caused by sexual coercion.
6. The forward lobe of the rhachis ( M1 ) is a bit shorter and wider than the middle lobe ( M2 ) and separated from it by a furrow ( F1 ) which is directed outward and slightly backward from the dorsal furrow, and then curved strongly forward adaxially.
7. This continuous evolution ( in both the forward and reverse directions ) has led to the recent speciation of " A . japonicus " and " A . kishii ", where females of " A . kishii " have lost their dorsal furrows while those of " A . japonicus " have not.