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 of the muscles have striation and intercalated discs within it?

(1) Myometrium

(2) Biceps

(3) Circular muscles of gut

(4) Myocardium

Which one of the following is not an example of smooth muscle?

(1) Arrector pili associated with hair follicles

(2) Circular muscle in the wall of intestine

(3) Located in the wall of blood vessels i.e. arteries help in vasoconstriction and vasodilation

(4) Muscles of heart. They are involuntary, innervated by autonomic nervous system

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

Which of the following is incorrect statement about frog?

1. Body is divisible into head and trunk

2. The skin is moist without scales

3. A tympanum represents the ear

4. Fore limbs have four digits with webs and hind limbs have five digits without webs

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

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

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