Plant Tissues and Their Functions Quiz

What type of tissue provides a protective cover for the entire body of the plant?

• Epidermal tissues

• Meristematic tissues

Answer explanation

Epidermal tissues form the outer protective layer of the plant, covering its entire body. They serve as a barrier against environmental factors, making them essential for plant protection.

Which type of meristem is responsible for the growth of roots?

• Permanent meristem

• Root apical meristem

Answer explanation

The root apical meristem is specifically located at the tips of roots and is responsible for root growth. In contrast, lateral meristems contribute to thickness, and shoot apical meristems are involved in shoot growth.

What is the main function of xylem tissues?

• Transport water and dissolved minerals

• Transport organic substances

Answer explanation

The main function of xylem tissues is to transport water and dissolved minerals from the roots to other parts of the plant, making this the correct choice. The other option refers to phloem, which transports organic substances.

Which type of ground tissue is characterized by unevenly thickened cell walls?

• Parenchyma tissues

• Collenchyma tissues

Answer explanation

Collenchyma tissues are characterized by unevenly thickened cell walls, providing support while allowing flexibility. This distinguishes them from parenchyma, which has uniformly thin walls, and sclerenchyma, which has thick, rigid walls.

What is the primary function of phloem tissues?

• Transport organic substances

• Transport water

Answer explanation

The primary function of phloem tissues is to transport organic substances, such as sugars produced during photosynthesis, throughout the plant. This is essential for plant growth and energy distribution.

Which cells are responsible for controlling the opening and closing of stomata?

• Parenchyma cells

• Guard cells

Answer explanation

Guard cells are specialized cells that surround stomata and regulate their opening and closing, controlling gas exchange and water loss in plants. Other cell types do not perform this function.

Which type of tissue forms the bulk of a plant?

• Meristematic tissues

• Epidermal tissues

• Vascular tissues

• Ground tissues

Answer explanation

Ground tissues make up the majority of a plant's body, providing support, storage, and photosynthesis. In contrast, meristematic, epidermal, and vascular tissues serve more specialized functions.

What is the function of root hair cells?

• Increase surface area for absorption

• Transport nutrients

Answer explanation

Root hair cells increase the surface area of the root, allowing for more efficient absorption of water and nutrients from the soil. This is crucial for plant growth and health.

Which type of tissue is responsible for the flexible support in nonwoody plant organs?

• Sclerenchyma tissues

• Collenchyma tissues

Answer explanation

Collenchyma tissues provide flexible support in nonwoody plant organs, allowing them to bend without breaking. In contrast, sclerenchyma tissues are rigid and provide structural support, making collenchyma the correct choice.