Question

1. what are the intercellular junctions between plant cells? what can pass through them? 34. animal cells do not have plasmodesmata. this figure shows the three types of intercellular junctions seen in animal cells. label each type and summarize its role. tight junctions: desmosomes: gap junctions:

Explanation:

1. Plasmodesmata are the intercellular junctions in plant cells. Small - molecules like water, ions, and some small proteins and RNA can pass through them, allowing for communication and transport between cells.
2. Tight junctions form a seal between cells, preventing the leakage of substances between them. Desmosomes are like "spot - welds" that provide strong adhesion between cells, helping to maintain tissue integrity. Gap junctions are channels that allow the direct passage of small molecules and ions between adjacent cells, enabling communication and coordination.

Answer:

1. Intercellular junctions: Plasmodesmata. What can pass through: Water, ions, small proteins, RNA.
2. Tight junctions: Form a seal to prevent substance leakage.

Desmosomes: Provide strong cell - to - cell adhesion.
Gap junctions: Allow direct passage of small molecules and ions for cell communication.