FRST 201 Lab Midterm - Twigs, buds, and modified leaves

What kind of scar is this?

Leaf Scar

What kind of scar is this?

Bud Scar

What kind of scar is this?

Bud Scale Scar

What is the difference between bud scale scars and bud scars?

bud scars are the remnants of individual buds, while bud scale scars are the marks left after protective scales from the terminal bud have shed

Bud Scar: Small, isolated, circular marks along the stem.

Bud Scale Scar: Ring-like or banded scars that encircle the stem, often used to indicate annual growth.

What type of bud is this?

Terminal Bud

What type of bud is this?

Lateral Bud - those which occur on the side of stems

What type of bud is this?

Pseudoterminal Bud

What type of bud is this?

Collateral bud - two or more lateral buds arranged sideways

What type of bud is this?

Superposed bud - when two lateral buds are on top of each other (only top bud is superposed, bottom is still lateral bud)

What type of bud is this?

Infrapetiolar Bud - bud enclosed within petiole

What type of Bud Scale is this?

imbricate - buds with more than 2 scales which overlap one another

What type of Bud Scale is this?

valvate - The edges of the bud scales do not overlap, instead they meet at their margins

What type of bud is this?

naked bud - A bud which lacks bud scales, with hairy, sticky, or no protective covering

Is this a thorn, prickle, or spine?

Thorn - Thorns are modified branches or stems

Is this a thorn, prickle, or spine?

Prickle - extensions of the cortex and epidermis

Is this a thorn, prickle, or spine?

Spine - Spines are modified leaves, stipules, or parts of leaves, such as extensions of leaf veins

What is a node?

the part of a plant stem from which one or more leaves emerge, often forming a slight swelling or knob

What is an internode?

a slender part between two nodes or joints

What is a short shoot?

A short shoot in plants is a compact branch with closely spaced leaves or buds, resulting from short internodes