How many molting will be observed in the case of female cockroaches for 20 eggs thinking that all will be converted in adults?

(1) 260

(2) 120

(3) 130

(4) 660

Nymph of cockroaches

If during development of P. americana total 39 molting were observed of different sequential stages, then how many eggs were there?

Cockroaches are

Vestibulum is a part of

Cockroaches are uricotelic. The function of  which of the following is analogous to the liver of vertebrates?

1.Malphighian tubule    

2. Mushroom glands

3. Cuticle of skin

4. Fat body

Which of the following mouthparts of the cockroach acts like a tongue?

1. Labium                            

2. Labrum

3. Hypopharynx           
4.Proventriculus

The type of epithelium shown in the given diagram is found in:

1. Proximal convoluted tubule

2. Later part of small intestine

3. Trachea       

4. Oviduct

In the given diagram of the transverse section of the gut, the longitudinal muscles are represented by the letter:

          1. A               

          2. B

          3. C               

          4. D

Match each item in Column I with one in Column II and choose your answer from the codes given below:

    Cockroach anatomy                  Feature
     A. Testes                        a. 6^th – 7^th abdominal segments
     B. Mushroom gland        b. 4^th – 6^th abdominal segments
     C. Ovaries                      c. 2^nd – 6^th abdominal segments
     D. Spermathecae           d. 6^th abdominal segment

                       A.      B.     C.     D.
      1.              c        a      b      d
      2.              c        b      a      d
      3.              b        a      c      d
      4.              d        b      a      c