16. Economic Value of Plants that undergo Secondary Growth

What is the main difference between monocotyledons and eudicotyledons?

• Number of cotyledons

• Flower size

• Type of stem

• Leaf color

Which group of flowering plants is the largest and consists of various species?

• Dicotyledons

• Eudicotyledons

• Gymnosperms

• Monocotyledons

What allows some eudicots to grow tall and live for hundreds of years?

• Secondary growth

• Root structure

• Annual rings

• Leaf venation

Plants that undergo secondary growth have high economic values because they can produce what?

• Timber

• Fruits and vegetables

• Textiles

• Medicinal herbs

What type of tissues are present in secondary vascular tissues?

• Primary xylem and primary phloem

• Secondary xylem and secondary phloem

• Primary xylem and secondary phloem

• Secondary xylem and primary phloem

What is the main difference between primary and secondary vascular tissues?

• Absence of woody tissues

• Type of stem

• Presence of annual growth rings

• Thickness of bark

Which plants have strong and hard woods suitable for structures like houseboats and furniture?

• Plants with annual flowers

• Plants that undergo secondary growth

• Plants with thin bark

• Plants with primary vascular tissues

What substances can be commercialized from the woods and barks of some plants that undergo secondary growth?

• Resin and oil

• Paper and cardboard

• Rubber and plastic

• Metal and glass

What makes furniture made from plants that undergo secondary growth look attractive?

• Thin leaves

• Colorful flowers

• Thick bark

• Annual rings

Which products are derived from plants that have undergone secondary growth and can generate income?

• Timber and furniture

• Medicinal herbs and spices

• Textiles and clothing

• Fruits and vegetables