Select the correct statement from the ones given below with respect to Periplaneta americana:
Correct answer: B. Males bear a pair of short thread like anal styles.
- A. Nervous system located is dorsally and consists of segmentally arranged ganglia joined by a pair of longitudinal connectives.
- B. Males bear a pair of short thread like anal styles.
- C. There are 16 very long Malpighian tubules present at the junctions of the midgut and hindgut.
- D. Grinding of food is carried out only by the mouth parts.
Explanation
Nutrition The posterior segment of cockroaches bears appendages called anal cerci. These are found in both male and female, but male cockroaches can be distinguished by female ones by the presence of an extra pair of accessory appendages called anal styles. These assist during copulation.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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