Chapter 1: Problem 28

Adjacent plant cells are joined together by (a) Middle lamella (b) Plasmodesmata (c) Mesosomes (d) Plasma membrane

Short Answer

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Answer: (a) Middle lamella

Step by step solution

Reviewing cell structures

Review the different cell structures mentioned in the exercise: (a) Middle lamella (b) Plasmodesmata (c) Mesosomes (d) Plasma membrane

Understand the function of the Middle Lamella

The middle lamella is a thin layer that cements adjacent plant cells together, which is mainly composed of pectin. It is formed during cell division when the cell wall starts to develop.

Understand the function of the Plasmodesmata

Plasmodesmata are small channels that connect the cytoplasm of neighboring plant cells, allowing the exchange of small molecules and ions between the cells.

Understand the function of the Mesosomes

Mesosomes are folded regions of plasma membrane in some prokaryotic cells, such as bacteria. They are not found in plant cells.

Understand the function of the Plasma Membrane

The plasma membrane is a selective barrier that encloses the cell contents and regulates the entry and exit of molecules into and out of the cell. It does not connect plant cells together.

Find the structure that connects adjacent plant cells together

Based on the function of each mentioned structure, the middle lamella is the structure that connects adjacent plant cells together since it cements the cells together. So, the correct answer is: (a) Middle lamella

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Adjacent plant cells are joined together by (a) Middle lamella (b) Plasmodesmata (c) Mesosomes (d) Plasma membrane

Short Answer

Step by step solution

Reviewing cell structures

Understand the function of the Middle Lamella

Understand the function of the Plasmodesmata

Understand the function of the Mesosomes

Understand the function of the Plasma Membrane

Find the structure that connects adjacent plant cells together

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