Animal cell do not possess plasmodesmata.

Plasmodesmata are small channels that connect plant cells, allowing for communication and transport of materials between neighboring cells. They are unique to plant cells and are not present in animal cells. This is why the correct answer is option B - plasmodesmata.

Explanation:

1. Animal Cells:
Animal cells are the basic structural and functional units of animals. They are eukaryotic cells, meaning they have a true nucleus and membrane-bound organelles. Animal cells are diverse in their structure and function, but they share some common characteristics. They are typically smaller than plant cells and do not have a cell wall or chloroplasts.

2. Plasmodesmata:
Plasmodesmata are small channels that traverse the cell walls of plant cells, connecting adjacent cells. They allow for communication and transport of materials between cells, including nutrients, signaling molecules, and even organelles. Plasmodesmata are lined with plasma membrane and are filled with cytoplasm, connecting the cytoplasm of neighboring cells.

3. Absence in Animal Cells:
While plasmodesmata play a crucial role in plant cell communication and transport, they are not found in animal cells. Animal cells do not have cell walls, which are necessary for the formation of plasmodesmata. Instead, animal cells are surrounded by a plasma membrane, which allows for direct contact between adjacent cells but does not form channels like plasmodesmata.

4. Intercellular Communication in Animal Cells:
Although animal cells lack plasmodesmata, they have other mechanisms for intercellular communication. Some common methods of communication between animal cells include direct contact through gap junctions, release and reception of chemical signals (i.e., hormones and neurotransmitters), and cellular extensions such as neurites in nerve cells.

Conclusion:
In summary, animal cells do not possess plasmodesmata, which are unique to plant cells. Plasmodesmata are small channels that connect plant cells and allow for intercellular communication and transport. Animal cells have alternative mechanisms for intercellular communication, such as gap junctions and chemical signaling.