'Annual rings' diaporamas de présentation

Timber and Wood Products

Timber and Wood Products. Basic material properties and characteristics. By Engr. Abbas Qureshi. Timber in history. Timber is one of the oldest building materials known. It has been used in buildings in most parts of the world for thousands of years.

804 views • 69 slides

469 views • 36 slides

Gymnosperm Angiosperms: Flowering plants

Seed Plants. Gymnosperm Angiosperms: Flowering plants. Kingdom Plantae. Evolutionary tree of plants From primitive ? more advanced traits. Angiosperms. Gymnosperms. Ferns. Mosses. Flowers ?. Seeds ?. Green alga ancestor. Vascular ?. Land ?. GYMNOSPERMS.

262 views • 17 slides

Four functions of stems

553 views • 16 slides

EQ: How do I describe the function of the stems and roots?

EQ: How do I describe the function of the stems and roots?. Stems. Two important functions Carries substances between roots and leaves Supports plant so leaves are exposed to the sun. EQ: How do I describe the function of the stems and roots?. Structure of a Stem. Two types of stems

459 views • 9 slides

Conversion of Timber

Conversion of Timber. Conversion of Timber. Trees are cut down during winter as there is less growth, therefore less sap After felling trees are transported to sawmills to be cut into boards This process of converting logs to boards is known as conversion 3 methods of conversion

2.78k views • 8 slides

Conversion of Timber

Conversion of Timber. Conversion of Timber. Trees are cut down during winter as there is less growth, therefore less sap After felling trees are transported to sawmills to be cut into boards This process of converting logs to boards is known as conversion 3 methods of conversion

2.54k views • 8 slides

What is the activity of the meristems?

What is the activity of the meristems? The cells carry out mitosis to produce new cells for plant growth. Are there any meristems in animals? No as they grow all over Name the two meristems and their position in a plant. Apical meristem at the shoot and root tips

236 views • 6 slides