Presence of intercalated discs help cardiac muscles to act as a functional syncytium. This is possible because the structure of these discs have:

 

1.	Tight junctions	2.	Gap junctions
3.	Adhering junctions	4.	Plasmodesmata

Identify the incorrect statement regarding the parts labeled in the following diagram:

1. A is the perimysium
2. B is the structural unit of skeletal muscle
3. C is epimysium
4. D is the endomysium

In the given schematic diagram of ultrastructure of a myofibril, the functional unit of muscle contraction is shown by the letter:

The following histology section depicts the structure of:

Which of the following is not true for connective tissue?
1. Cells lie embedded in the matrix
2. Glycosaminoglycans and proteoglycans are present in ground substance
3. All connective tissues are fibrous
4. Connective tissues are derived from the mesenchyme

Identify the incorrectly matched pair:

The main function of adipose tissue is

The following diagram shows the alimentary canal of Periplaneta americana. Identify the incorrectly matched pair:

Which of the following mouth parts of cockroach are paired?

Anal styles are borne on the: