Exam 33: The Plant Body

You find a plant near the edge of a forest that seems to be related to a wild species of nut tree that produces edible fruit.This new tree has larger nuts and a more compact stature, which would make it ideal for cultivation and harvesting in an orchard.If the new tree is a mutant of a known species, these _______observed differences in the two nut trees could be due to _______ genetic factors.

Tracheids, vessel elements, and sclereids are similar in that they all

You are observing plant cells that appear to be arranged end-to-end.The cells have large pits between them that align end-to-end and likely serve as part of the vascular tissue.You are observing _______.

The main parts of the plant body are the

_______ cells perform their primary function when they are dead.

Bark is

You observe a cell that is elongated, with characteristically thickened corners of the primary cell wall.What type of cell are you observing?

Which of the following is/are found in the leaf of a eudicot but not in the leaves of all flowering plants?

A _______ is an undeveloped shoot.

A scientist has discovered a new kind of alfalfa plant that deters nematodes from attacking its epidermis.It is likely that in the epidermis of the plant there are many _______, which have thick secondary cell walls.

When plants are ready to flower, shoot apical meristems become _______ meristems.

A kind of adventitious root produced by corn and some types of figs to support stems is called a _______ root.

A mutant mustard plant cannot correctly respond to gravity, and its roots therefore grow in an undirected fashion.The plant probably has a defective

Plants differ from animals in that they provide more examples of _______ development.

The body of a cactus plant is mostly a modified

Corn/maize is descended from what ancient wild grain?

The periderm of a woody stem is produced by the

The most peripheral layer of cells of the plant body is the

While examining a plant you find a tissue within the plant composed of dead cells that have very thick cell walls and contain lignin.What types of cells are you looking at?

A kind of grass has evolved to be very resistant to chewing by panda bears, which now avoid it and eat other plants instead.The specific acquired characteristic is hardened cell walls in its leaves, which are due to increased