Exam 46: Plant Responses to the Environment

The ideal Christmas tree has a conical shape. The top of the tree is pointed and narrow, with clear apical dominance, and the bottom of the tree is wide, with extensive lateral branching. Certain evergreen species are suitable for use as Christmas trees because they have this shape normally and thus require little pruning or training as they grow. For example, spruces and firs are often grown as Christmas trees, whereas yews and longleaf pines are not. Based on this information, spruces and firs are likely to have

Cytokinins cause most of their responses in plants by stimulating cell__________ .

Plants, as prey, canʹt run away from their predators, but they can defend themselves. Is the predatory nature of Venus flytraps a defense mechanism, or does it serve some other purpose?

What happens to phytochromes after several days of dark, rainy weather?

Elongation of cells in stems is promoted by

A new type of strawberry plant produces fruit in the late spring, throughout the summer, and into the fall. It is a(n) __________plant.

If a plant is living under conditions that limit root growth, shoot growth is

What phenomenon is illustrated in the figure?

How is the carnivorous plant lifestyle suited for an existence in bogs?

What kinds of hormonal changes occur as trees prepare for winter dormancy?

The only plant hormone that is a gas is cytokinin.

Vibrations from an insect trapped inside a carnivorous sundew and thrashing around to escape stimulate the sundewʹs response. What happens next?

Placing a ripe apple in a bag of green bananas will cause the bananas to ripen quickly. This is because the apple

Leaves of the Venus flytrap and other sensitive plants move quickly due to

How do auxin and cytokinin interact to affect the shape and growth of a plant?

Corn plants release chemicals that attract a parasitic wasp. The wasp, in turn, protects the corn plants from destruction by

Based on the figure, which of the following plants will NOT flower under long -day or interrupted-night conditions?

If you want to keep cut flowers fresh, treat them with

Misting tomato plants with wintergreen tea can help prevent mosaic virus from infecting the plant. How?

If a coleus plant becomes tall and spindly, what can you do to encourage it to develop lateral branches, so that it becomes bushier?