Exam 35: Plant Structure, Nutrition, and Transport

Worldwide, humans obtain more than 80 percent of their calories from

Like other organisms, plants are composed of proteins, lipids, carbohydrates, and nucleic acids. Based on this, which of the following would be a micronutrient?

Most carnivorous plants obtain energy through photosynthesis; they consume insects to obtain ____________________.

The roots of a plant are covered with a waxy cuticle.

Which of the following is true of phloem transport?

The difference in ____________________ between the sugar-loading zone and the sugar-unloading zone drives the long-distance transport of sugars through the phloem.

Plants have two types of vascular tissue: xylem, which transports ____________________, and phloem, which transports ____________________.

Many plants and animals move water and nutrients within internal vessels. Animals use the energy of muscle contraction; however, no metabolic energy is expended when water and minerals move within a plant's xylem.

Chemicals that dissolve away a plant's cuticle typically result in the death of the plant as it loses its ability to

Like other organisms, plants are composed of proteins, lipids, carbohydrates, and nucleic acids. Based on this, which of the following would be a macronutrient?

The cells of the xylem are dead at functional maturity. This allows

Once sugars have been actively transported into the phloem,

The figure below illustrates how food is transported in phloem tissue. At what step(s)during the movement of sugar does the plant provide metabolic energy?

A high-quality soil provides everything needed for plant growth.

The presence of root hairs in the region of this root tip labeled with the letter A suggests that we are looking at the zone of ____________________.

Most aboveground plant growth occurs with the repeated addition of ____________________ units.

____________________ are secondary plant compounds that evolved in plants to protect them from attack by fungi, bacteria, and insects and might enhance the human immune system.

In terms of their energy needs, solar energy is converted to chemical energy primarily within the plant's

Companion cells in plants

A typical fertilizer contains no carbon because carbon is