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

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 2^nd - 6^th abdominal segments

3. Each ootheca contains 9-10 eggs

4. The nymph grows by moulting about 13 times to reach the adult form

Which mouth part of cockroach acts as upper lip?

1. Labium

2. Labrum

3. First maxilla

4. Hypopharynx

The central nervous system of cockroach includes

1. Brain and ganglionated dorsal nerve cord

2. Brain and ganglionated ventral nerve cord

3. Brain and hollow nerve cord

4. Dorsal solid nerve cord only

Sense organs of cockroach include

1. Compound eyes

2. Johnston's organ

3. Osphradium

4. Spiracles

Which one of the following is the true description of an animal concerned?