abeka biology 10 section 4.1

buds

the parts of the stem that allow it to grow in length or to develop new stems, flowers, or leaves

bud scales

protect the bud in winter from frost injury and from drying out

terminal bud

allows the stem to grow in length

lateral buds

allow growth of new stems from the sides of the main stem

bud-scale scars

indicate where last years growth started

nodes

areas where the leaves are growing or have grown

internode

the section of the twig between nodes

leaf scar

reveals where leaves have grown in the previous years

bundle scars

indicate the passage points of vascular tissue from the stem of the petiole of the leaf

lenticels

openings in the bark that allows air to enter the stem

primary growth

stems grow in length at the tip of their branches

growth

**fill in the blank**

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the terminal bud of a stem produces hormones that control the _________ of lateral buds

spire-like

have strong terminal buds on the main vertical stem and straight with branches coming from a large central shaft

spreading

have strong lateral buds and develop several main branches close to the ground