Plant anatomy

Monocotyledon and Dicotyledon

Moss antheridium mosses are dependent on periods of water for reproduction

Moss archegonia

Ferns produce diploid sporesSpores are adapted for surviving extended periods of time.

Seeds can survive even longer periods of time when conditions become unfavorable

• . The most recent record (June 2005) is the seed of a date palm (Phoenix dactylifera) that was discovered during an archaeological excavation at King Herod's Palace on Mount Masada near the Dead Sea. Nicknamed "Methuselah" the palm that sprouted from this ancient seed has been Carbon-dated at about 2,000 years old. Since date palms are dioecious, it is not known whether the palm is male or female. Another seed viability record is the Asian water lotus (Nelumbo nucifera) in which a seed from China was successfully germinated after 1,200 years. But the world's record is the seed of an Arctic lupine (Lupinus arcticus) that was excavated from a lemming burrow in frozen Arctic tundra. The seed germinated and flowered after an estimated 10,000 years of dormancy. The latter record was not mentioned in the MSNBC Online Technology & Science article about a 2,000-year-old date palm seed, so perhaps the 10,000-year-old Arctic lupine is questionable.

Fern Sori

Corn root cross section p.748 a

Corn root cap: An adaptation to push through the soil.

Corn lateral root

Corn stem cross sectionMonocot vascular tissue “MONSTER FACES”

Typical dicot leaf p. 751

Leaf abscission layerWHY? P. 834

Mixed pollen~40x The structure of pollen is species specific.

Dodder on hostDodder is the stringy growth on the plant

Venus fly trap P. 798

Pitcher plant of N.C. coastal plainsP. 798

Mistletoe on an oak tree.Parasitism

• Draw and label the idealized flower on page 625

Typical AP Plant Physiology Questions

1. Which of the following most accurately describes what will happen when a ring of bark is removed from the entire circumference of a tree?

(A) A swelling develops above the cut; sticky fluid leaks out above the cut.

(B) The tree quickly dehydrates and the leaves fall off.

(C) Water coming up from the roots leaks out at the wound.

(D) The tree will grow new connective tissues extending across the cut.

(E) Water lost by transpiration from the leaves will not be replaced.