Plant Transport Systems and Functions

The lecture covers the process of photosynthesis, emphasizing the role of diffusion in plant cells. It explains the transport systems in plants, focusing on the functions and structures of xylem and phloem. The differences between these two types of plant tissues are highlighted, including their roles in transporting water and food. The session concludes with a review and student questions.

What is the primary role of diffusion in plants?

• To transport water from roots to leaves

• To move substances from high to low concentration

• To produce food through photosynthesis

• To support plant structure

Which part of the plant is responsible for transporting water?

• Phloem

• Roots

• Xylem

• Leaves

What does phloem primarily transport?

• Food from photosynthesis

• Water

• Mineral salts

• Oxygen

What are vessels in the context of xylem?

• Cells that store nutrients

• Cells that produce photosynthesis

• Dead cells forming tubes for water transport

• Living cells that transport food

What is the process called where xylem loses water?

• Transpiration

• Photosynthesis

• Diffusion

• Translocation

Which type of transportation occurs in phloem?

• Passive transportation of oxygen

• Active transportation of sugars

• Passive transportation of water

• Active transportation of minerals

How do xylem and phloem differ in terms of cell composition?

• Xylem is made of living cells, phloem of dead cells

• Both are made of dead cells

• Both are made of living cells

• Xylem is made of dead cells, phloem of living cells

Why do multicellular plants need a transport system?

• To support plant growth

• To transport nutrients and waste efficiently

• To speed up diffusion

• To increase surface area

What connects the top and bottom of a plant?

• Flowers and fruits

• Stems and branches

• Xylem and phloem

• Roots and leaves

Where would you find the transport tubes in a leaf?

• In the roots

• In the stem

• In the flowers

• In the veins