Plant Cell Structures and Functions

The video tutorial explains the basic and unique structures of plant cells, including the nucleus, cell membrane, cytoplasm, mitochondria, ribosomes, cell wall, chloroplasts, and vacuole. It highlights the role of chlorophyll in photosynthesis and the importance of cellulose in cell walls. The tutorial also covers specialized plant cells like phloem and xylem, which are crucial for transporting sugars and water, respectively. These cells are adapted to their functions, with features like lignin for structural support.

Which of the following structures is unique to plant cells?

• Mitochondria

• Chloroplast

• Ribosomes

• Nucleus

What is the primary component of the plant cell wall?

• Protein fibers

• Cellulose fibers

• Lignin

• Chlorophyll

What pigment is found in chloroplasts that is essential for photosynthesis?

• Carotene

• Xanthophyll

• Chlorophyll

• Anthocyanin

Which plant cell structure is responsible for absorbing light energy?

• Chloroplast

• Vacuole

• Cell wall

• Nucleus

What is the main function of the vacuole in plant cells?

• Energy production

• Protein synthesis

• Photosynthesis

• Providing structure and storing sugars

Why do plant cells have different appearances?

• They are all identical

• They are specialized for different functions

• They change shape randomly

• They are affected by external temperature

What is the role of phloem cells in plants?

• Absorbing light

• Providing structural support

• Transporting sugars

• Transporting water

What substance strengthens xylem cells?

• Protein

• Cellulose

• Lignin

• Chlorophyll

What is the function of lignin in xylem cells?

• To produce energy

• To withstand pressure changes

• To absorb light

• To store nutrients