Question 1

What are the two broad classifications of plant tissues?

Accepted Answer

Plant tissues are classified as meristematic or permanent. Meristematic tissues retain the ability to divide, while permanent tissues have lost the capacity to divide and are further divided into simple and complex permanent tissues.

Question 2

Where are meristematic tissues found?

Accepted Answer

Meristematic tissues occur mainly at the tips of roots and shoots. Their cells are thin-walled, have dense cytoplasm and prominent nuclei, contain little or no vacuole, and can continue dividing to form new tissues.

Question 3

How do parenchyma, collenchyma and sclerenchyma differ?

Accepted Answer

Parenchyma is generally living, thin-walled, loosely packed and often has intercellular spaces for storage or photosynthesis. Collenchyma is living with uneven wall thickening especially at the corners, while sclerenchyma is usually dead at maturity and has thick lignified secondary walls.

Question 4

What is transported by xylem and phloem?

Accepted Answer

Xylem mainly conducts water and minerals, generally from roots toward aerial parts. Phloem translocates food material, generally sucrose, through sieve-tube elements supported by companion cells.

Question 5

What are the three plant tissue systems?

Accepted Answer

The three tissue systems are the epidermal tissue system, ground tissue system and vascular tissue system. The epidermal system covers the plant, the ground system fills the remaining spaces, and the vascular system transports materials through xylem and phloem.

Plant Tissues 3D — Build the Living Plant Body

About this lab

Practice