Bidder’s canals is/are present in

1. Male frog

2. Both male and female frog

3. Female cockroach

4. Bone of mammals

Match the following and choose the correct option.

1. a(ii), b(i), c(iv), d(iii)

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

3. a(i), b(ii), c(iii), d(iv)

4. a(ii), b(iii), c(i), d(iv)

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

Among the options given below, simple epithelium is not found at which location?

1. Air sacs of lungs

2. PCT

3. Inner surface of bronchioles and fallopian tubes

4. Inner lining of ducts of salivary glands

See the figures given below and select the mismatch with respect to identification or corresponding feature listed.

Select the correct statement with respect to Periplaneta americana.

1. Paurometabolous development with 9-10 nymphal stages.

2. A pair of spermatheca is present in the 6th segment of only female cockroach.

3. Anal styles present exclusively in males are attached to 10th tergite.

4. Mesothoracic wings are opaque, dark and leathery in appearance and are used in flight.

Secretions from these help in digestion of food in cockroach. ‘These’ represents the

(1) Crop

(2) Gizzard

(3) Hepatic caeca

(4) Malpighian tubules

Skeletal muscle fibres are

Select the odd one with respect to secretions of exocrine glands.

1. Saliva

2. Mucus

3. Insulin

4. Milk

Choose the incorrect match with respect to total number of following structures in cockroach

1. Spiracles – 10 pairs

2. Gastric caeca – 6-8

3. Malpighian tubules – 100-150

4. Ommatidia – 2000