Leaf Anatomy Quiz

What is the function of the midrib in a leaf?

• It attaches a leaf to the stem.

• It is the flat wide portion of the leaf.

• It travels the length along the center of the leaf and contains the main vein and supportive ground tissue.

• It is the edge of the leaf.

Which part of the leaf is described as the flat wide portion and is the widest part of the leaf?

• Petiole

• Midrib

• Margin

• Blade

What distinguishes a petiolate leaf from a sessile leaf?

• A petiolate leaf has a midrib, while a sessile leaf does not.

• A petiolate leaf is attached to the margin of the leaf by a petiole, while a sessile leaf is attached directly to the stem and does not have a petiole.

• A petiolate leaf is the edge of the leaf, while a sessile leaf is the flat wide portion.

• A petiolate leaf is attached by a petiole underneath the blade, while a sessile leaf is attached to the stem by a midrib.

What is the term for the edge of a leaf?

• Blade

• Petiole

• Margin

• Vein

What is a node in the context of plant stems?

• The arrangement of leaves on a stem

• The part of the stem in between 2 nodes

• A point on the stem where one or more leaves arise

• Three or more leaves connected at a node

What does the term 'phyllotaxy' refer to?

• The type of soil suitable for plant growth

• The process of photosynthesis in leaves

• The arrangement of leaves on a stem

• The length of the internode

Which of the following describes an alternate phyllotaxy?

• Leaves per node and alternate/spiral up the stem

• Two leaves per node and connected on opposite sides

• Part of the stem in between 2 nodes

• Three or more leaves connected at a node

What is an internode?

• A point on the stem where one or more leaves arise

• The arrangement of leaves on a stem

• The part of the stem in between 2 nodes

• A type of leaf arrangement

Which phyllotaxy is characterized by having two leaves per node, connected on opposite sides?

• Alternate

• Opposite

• Whorled

• Spiral

What is the phyllotaxy pattern where three or more leaves are connected at a node?

• Alternate

• Opposite

• Whorled

• Spiral