Hint: A co*ckroach is an insect that belongs to the phylum Arthropoda and class Blattodea. Nearly 30 species of co*ckroaches live in human habitats. Five co*ckroaches are pests. It has a dorsal, thirteen chambered tubular heart. co*ckroach heart is much more resistant to failure than human hearts. co*ckroaches are hardy insects that can tolerate a wide range of environments from Arctic cold to tropical heat.
Complete answer:
co*ckroach belongs to the phylum Arthropoda. The heart of a co*ckroach is neurogenic because it requires a nervous impulse to contract. On the wall of the heart cluster of neurons is present that produces the rhythmic motor output for the heartbeat. The neurogenic heart is present in lower invertebrates. In a neurogenic heart, the heartbeat is initiated by a ganglion present on the heart.
The myogenic heart is present in mollusks and vertebrates. In a myogenic heart, the heartbeat is under the control of muscles.
Hence, the correct answer is option (C).
Additional information:
- In co*ckroaches, a pair of slit-like openings called Ostia is present by which oxygenated blood enters each chamber of the heart.
- The first chamber of the heart enters into the aorta which then opens into head sinuses.
- co*ckroaches include termites also.
- co*ckroaches make use of pheromones to attract mates.
- co*ckroaches are omnivorous.
Note: The heart of the co*ckroach is neurogenic. The neurogenic heart is a type of heart that requires nervous input to contract. Cardiac ganglion which is a cluster of neurons is present on the heart wall of co*ckroach and it produces rhythmic motor output for the heartbeat. co*ckroach heart is present on the dorsal side and it consists of ten abdominal and three thoracic chambers of the heart.
