Which of the following statements is true for cockroaches?

1. The total number of ovarioles are five in both ovaries

2. The larval stage is called naiad

3. Anal styles are absent in females

4. They are ureotelic

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

What external changes are visible after the last moult of a cockroach nymph?

1.  Mandible become harder

2.  Anal cerci develop

3.  Both fore wings and hind wings develop

4.  Labium develops

Match the following columns with reference to cockroach and select the correct option:        

Match the following with respect to cockroach

   Column l                      Column ll

a. Ovaries                   (i) $4^{\mathrm{th}}-<mspace\; width="1em"></mspace>6^{\mathrm{th}}$ segment    

b. MUshroom gland     (ii) $2^{\mathrm{nd}}-<mspace\; width="1em"></mspace>6^{\mathrm{th}}$ segment

c. Testis                     (iii) ${14}^{\mathrm{th}}-<mspace\; width="1em"></mspace>{16}^{\mathrm{th}}$ segment

d. Ootheca number     (iv) $6^{\mathrm{th}}-<mspace\; width="1em"></mspace>7^{\mathrm{th}}<mspace\; width="1em"></mspace>\mathrm{segment}$

                                 (v) 9 $-$ 10

(1) a(ii), b(iv), c(i), d(v)

(2) a(ii), b(iv), c(i), d(iii)

(3) a(i), b(iii), c(ii), d(v)

(4) a(iii), b(ii), c(i), d(iv) 

Consider the following statements A, B, C & D with certain blanks. Find the option which correctly fills up these blanks

A. The ootheca of cockroach is about __(i)____ long.

B. The development of P americana is  ___(ii)___, meaning there is development through ___(iii)____ stage.

C. In the head region of cockroach, the brain is represented by ___(iv)___ ganglion, which supplies nerves to antennae and ____(v)___.

D. The respiratory system of cockroach consists of a network of trachea, that opens through ____(vi)____ of small holes called spiracles present on the ____(vii)____ side of the body.

(1) A - (i) 3 mm

     B - (ii) Paurometabolous

           (iii) Nymphal

     C - (iv) Supra-oesophageal

           (v) compound eyes

(2) B-(ii) Paurometabolous

     C-(iv) Supra-oesophageal

         (v) wings

     D -(vi) 10 pairs

          (vii) Lateral

(3) A - (i) 8 mm

     C - (iv) Sub-oesophageal

            (v) Compound eyes

     D - (vi) 10 pairs

          (vii) Dorsal

(4) A - (i) 8 mm

     B - (ii) Paurometabolous

          (iii) Nymphal

C - (iv) Supra-oesophageal

           (v) compound eyes

     D - (vi) 10 pairs

           (vii) Lateral

Following is diagrammatic representation of female

reproductive system of cockroach.

Find the right marking and function performed by

that part

(1) A $-$ Conglobate gland $-$ Converting of sperm

     B $-$ Spermatheca $-$ Storage of sperm

(2) A $-$ Phallomere $-$ Covering around egg

     B $-$ Titillator $-$ Opening of spermatophore

(3) A $-$ Vestibule $-$ Place to store fertilized eggs

     B $-$ Spermatophore $-$ Storage of sperms

(4) A $-$ Collaterial gland $-$ From the wall of ootheca 

     B $-$ Spermatheca $-$ Storage of sperms in female 

On an average female cockroach produce ________ oothecae, each containing ________ eggs.

(1) 9-10, 14-16

(2) 14-16, 9-10

(3) 2-4, 10-12

(4) 6-8, 8-10

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