In cockroach, spiracles are present on the

1. Dorsal side of the body

2. Ventral side of the body

3. Lateral side of the body

4. Anterior region of body

Thin tubes that carry oxygen from the air to all the parts in cockroach constitute

1. Tracheal system

2. Haemolymph

3. Lungs

4. Gills

In cockroach, eye consists of visual units called

1. Ostia

2. Ommatidia

3. Gonapophyses

4. Spiracles

External genitalia in cockroach consist of small Irregular chitinous plates known as

1. Seminal vesicles

2. Collaterial gland

3. Phallomeres

4. Abdominal sclerites

Number of pairs of spiracles in Periplaneta americana is

1. Ten

2. Twenty

3. Eight

4. Six

Number of eggs contained in an ootheca of cockroach is

1. 8

2. 16

3. 32

4. 4

In cockroach, food is crushed into fine particles inside

1. Midgut

2. Colon

3. Gizzard

4. Pharynx

In cockroach, oesophagus continues into the

1. Gizzard

2. Crop

3. lleum

4. Mesenteron

Which of the foliowing structure is present only in male cockroach?

1. Anal cerci, Pair of jointed filamentous structure which arise from 10^th segment

2. A pair of short thread like anal styles

3. Arthrodial membrane

4. Chitinous exoskeleton

In cockroach the wings that help in flying are

1. Fore wings

2. Mesothoracic wings

3. The hind wings which are transparent and membranous

4. Tegmina