Question

Which of the following are only in plant cells?

a. gap junctions

b. desmosomes

c. plasmodesmata

d. tight junctions

Short answer

Plasmodesmata are only present in plant cells.

Step-by-step solution

Explanation

Gap junctions are channels in animal cells that allow ions, nutrients, and other substances to flow between them, allowing them to interact. So, option a is wrong.

Desmosomes are found in animal cells which form a continuous strip of epithelial tissue or contact points that binds cells together. They are also used to provide structural support. Option b is incorrect too.

Plasmodesmata are channels present in only plant cells that allow ions, nutrients, and other substances to flow between them, allowing them to interact. Thus, option c is correct

Tight junctions connect cells and are made up of linked parts of the plasma membrane. They are also found in animals. Hence, option d is incorrect as well.

Conclusion

Plasmodesmata are channel between plant cells which allows them to communicate.