Which of the following does not behave as a sense organ in cockroach?

1. Maxillary palps

2. Labial palps

3. Anal cerci

4. Phallomeres

Choose the incorrect statement with respect to cockroach

1. Haemocoel contains haemolymph which contains colourless plasma and haemocytes

2. Nervous system consists of segmentally arranged ganglia, six in thorax and nine in abdomen

3. Mushroom gland is present in 6th – 7th abdominal segment in male cockroach

4. Proventriculus has an outer layer of thick circular muscles and inner thick cuticle forming teeth

A specialised connective tissue containing chondrocytes can be found at/in

1. Myocardium

2. Blood vessels

3. Tip of nose

4. Tendons

Which of the following is incorrect statement with respect to cockroach?

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

2. The outermost covering of spermatophore is formed by secretions of spermatheca

3. Mushroom glands are accessory reproductive glands in a male

4. Each compound eye consists of nearly 2000 ommatidia

Internal fertilization is not seen in

1. Birds

2. Reptiles

3. Frog

4. Mammals

Select the incorrect match with respect to animals and the type of nitrogenous waste excreted by them

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

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

1. Saliva

2. Mucus

3. Insulin

4. Milk

Skeletal muscle fibres are

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