In male cockroaches,  sperms are stored in which part of the reproductive system?

(1) Seminal vesicles

(2) Mushroom glands

(3) Testes

(4) Vas deferens

The terga sterna and pleura of cockroach body are joined by

1. cementing glue

2. muscular issue

3. arthrodial membrane

4. cartilage

What external changes are visible after the last moult of a cockroach nymph?

1.  Mandible become harder

2.  Anal cerci develop

3.  Both fore wings and hind wings develop

4.  Labium develops

Select the correct statement from the ones given below with respect to Periplaneta americana.

(1) Nervous system dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives

(2) Males bear a pair of short thread like anal styles

(3) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

(4) Grinding of food is carried out only by the mouth parts

Which of the following is correctly states as it happens in the common cockroach?

(1) Oxygen is transported by haemoglobin in blood

(2) Nitrogenous excretory product is urea

(3) The food is grinded by mandibles and gizzard

(4) malpighian tubules are excretory organs projecting out from the colon

Excretion in cockroach takes place by

(1) nephridium

(2) parotid gland

(3) coxal glands

(4) malphighian tubules

Which part of the neuron triggers events that may cause stimulation or inhibition of adjacent neurons and other cells ?

(1) Nucleus

(2) Cell body

(3) Neuron’s endings

(4) Axon

Complete the following analogy :-

Vertebrates : Brain : : Cockroach : ___________

(1) Lower-oesophageal ganglion

(2) Supra-oesophageal ganglion

(3) Nephrocytes

(4) Ommatidia

The triangular head of cockroach is made by fusion of how many segments :

(1) Three

(2) Five

(3) Nine

(4) Six

Which among the following statements with respect to forewings of cockroach is incorrect?

(1) They are called as tegmina.

(2) They are opaque, leathery and dark.

(3) They arise from prothorax.

(4) They cover hindwings when at rest.