Select the correct statement from the ones given below with respect to Periplaneta americana.

1. Nervous system dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives

2. Males bear a pair of short thread like anal styles

3. There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

4. Grinding of food is carried out only by the mouth parts

Which of the following is correctly states as it happens in the common cockroach?

1. Oxygen is transported by haemoglobin in blood

2. Nitrogenous excretory product is urea

3. The food is grinded by mandibles and gizzard

4. malpighian tubules are excretory organs projecting out from the colon

The kind of epithelium which forms the inner walls of blood vessels is 

1. cuboidal epithelium

2. columnar epithelium

3. ciliated columnar epithelium

4. squamous epithelium

Smooth muscles occur on

1. viscera

2. internal organs

3. blood vessels

4. all the above

Excretion in cockroach takes place by

1. nephridium

2. parotid gland

3. coxal glands

4. malphighian tubules

Tendon and ligament are example of 

1. dense regular connective tissue

2. dense irregular connective tissue

3. loose connective tissue

4. specialised connective tissue

Intercalated discs are characteristic of muscles found in 

1. heart

2. thigh

3. urinary bladder

4. stomach

Observe the following figures:

Figure A and B indicate glands while Figure C indicates specific type of tissues. Identify these figures:

Identify figure-I and II, structures A and B respectively? Figures are related with specialised connective tissues:

Each muscle is composed of many long, cylindrical fibres arranged in parallel arrays. These fibres are composed of numerous fine fibrils, called:

1. Microfilament

2. Myofibrils

3. Microtubule

4. Sarcoplasm