Crash Course Wood

What is the primary component of wood that gives it strength and rigidity?

• Cellulose

• Lignin

• Hemicellulose

• Pectin

Which process is responsible for the formation of wood in trees?

• Photosynthesis

• Respiration

• Transpiration

• Secondary growth

What is the main function of xylem in woody plants?

• Transport of water and minerals

• Transport of sugars

• Gas exchange

• Photosynthesis

Which type of wood is known for its ability to resist decay and is often used in outdoor furniture?

• Pine

• Cedar

• Oak

• Maple

What is the term for the annual growth rings seen in a cross-section of a tree trunk?

• Bark

• Cambium

• Growth rings

• Heartwood

Which chemical compound is primarily responsible for the color of wood?

• Chlorophyll

• Tannins

• Carotenoids

• Anthocyanins

What is the role of lignin in wood?

• Provides flexibility

• Stores nutrients

• Gives structural support

• Facilitates photosynthesis

Which of the following is a hardwood?

• Pine

• Spruce

• Birch

• Fir

What is the process by which wood is converted into charcoal?

• Combustion

• Pyrolysis

• Oxidation

• Hydrolysis

Tags

NGSS.MS-PS1-4

Which part of the tree is responsible for the production of new wood and bark?

• Cambium

• Phloem

• Xylem

• Pith