Which organelles are found only in plant cells? cell membrane, vacuole
cell wall, chloroplasts
cell wall, vacuole
cell membrane, chloroplasts

 cell wall, chloroplasts

Explanation:

The animal cell and plant cell can be differentiated based on the presence of cell wall and plastids - chloroplast, leucoplasts, chromoplasts.

Plastid is a small organelle in plant cell which has food or pigment. chloroplast is a pigment which is responsible for green color.

A rigid layer surrounding cell membrane is a cell wall found in plant cell only.

The cell wall and the chloroplast are only present in the plant cell.The cell wall is the outermost rigid layer that surrounds the cell membrane. Chloroplast is present within the cytoplasm of the plant cell that helps in photosynthesis.

Further Explanation:

The cell wall is the rigid outer layer of some cells like plant and bacterial cells. It is the outermost layer of the cell that covers the plasma membrane. It is composed of cellulose (complex carbohydrate) which providesa rigid structure. It consists of three layers namely; Middle lamella, Primary cell wall, and Secondary cell wall. Middle lamella forms the foremost layer of the cell wall. It consists of pectin that supports cell adhesion. Primary cell wall contains cellulose microfibrils that provide strength and flexibility. Secondary cell wall contains cellulose and lignin that strengthen the cell wall.

Chloroplast helps in photosynthesis by converting light energy into chemical energy. It has a round, oval, disk-shaped structure. It is a double membranous structure and the outer and inner layers are separated by the intermembrane space. The innermost (third) membrane vesicles (thylakoid) are arranged in the form of stacks that reside in a matrix known as the stroma. The green pigment is present in the thylakoid. The two types of pigments; namely chlorophyll a and chlorophyll b are present in the chloroplast. These pigments are responsible for the absorption of light energy.

Learn More:

1. Learn more about the treatment of eukaryotic cell with a drug

2. Learn more about the proteins synthesis in a cell

3. Learn more about an exchange of gases by blood cells

Answer Details:

Grade: High school

Subject: Biology

Chapter: Structure of the cell.

Keywords:

Cell wall, chloroplast, rigid, semi-permeable, lamella, microfibrils, lignin, organelle, photosynthesis, chemical, thylakoid, stroma, chlorophyll, pigment.

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