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 10th 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
Mark the false statement with respect to the reproductive system of female cockroach (Periplaneta americana)
1. Pair of spermatheca present in the 6 th segment
2. Two large ovaries lying laterally in the 2nd - 6th abdominal segments
3. Each ootheca contains 9-10 eggs
4. The nymph grows by moulting about 13 times to reach the adult form