Question

Adhesive pads present in the legs of cockroaches are called:
A. Galeae
B. Lacinia
C. Glossae
D. Plantulae

Answer 1

Hint: Cockroaches are commonly known as Periplaneta americana. Its body is divided into head, thorax and abdomen. It is bilaterally symmetrical and flattened dorsi-ventrally. Its body consists of segments of exoskeleton which are hardened to form plates called sclerites.

Complete answer:
To solve the following question, we must be well aware of the different body parts of the cockroaches.
The walking legs are segmented and divided into 5 segments. The five segments are coxa, trochanter, femur, tibia and tarsus. The coxa is the large stout segment which articulates with the thoracic cavity present between the pleuron and the sternum. The small trochanter and the femur are fused together. The femur is the long and broad bone. After the femur is present the tibia which is a splendor and spiny segment. Finally the last segment is the tarsus of the foot.
Five movable structures known as the podomeres are present on each of these tarsus. These podomerese bear spines and their lower portion contains soft adhesive pads called plantulae..
Lacinia and galea are present in the mouth of the insects. Glossae is also present in the mouth of the cockroaches.

Since, now we are well aware of the different parts of the cockroaches, therefore the correct answer to the question plantulae.

Note: Here it must be noted that the last podomere is known as the pretarsus. It bears two lateral claws called unges. Arolium is present in between these claws which is a soft hollow lobe with small bristles. At times when the claws cannot grasp the smooth surface, these arolia act as adhesives organs for maintaining the grip.