Exam 6: Plant Adaptations to the Environment

Carbon, from which life is constructed, is derived from

In tropical regions with distinct wet and dry seasons, plants that drop their leaves at the onset of the dry season are termed ________.

The ratio of carbon fixed (photosynthesis)per unit of water lost (transpiration)is called the ________.

Describe how water moves from the soil, through plant tissues, into the atmosphere through transpiration. Define and utilize the concept of water potential in your answer.

Compared with a shade-intolerant plant, a shade-tolerant plant

All life is ________ based.

Some plants have adapted to low nutrient environments by having long-lived leaves.

Compared with terrestrial plants, submerged aquatic plants lack

Explain the link between nutrient availability and plant performance. Use the specific example of nitrogen to illustrate the interdependence of plant processes.

The C₄ photosynthetic pathway is most common among plants inhabiting ________ habitats.

Photons are absorbed by pigments in antennae which pass the energy to reaction centre chlorophylls via

Compare how CO₂ uptake and net photosynthetic rates change with temperature between cold-weather and warm-weather plants. Use one or more graphs in your answer.

The growth of adventitious roots is an adaptation to saline environments.

Dehydration can be a problem for plants in cold habitats.

Plants adapted to saline habitats are called ________.

Give an example of how different aspects of the physical environment interact to influence plants.

Plants growing in shade tend to produce less Rubisco and more chlorophyll than plants growing in full sun.

________ expresses the change in size of an individual during the observed period of time as a function of the size of the individual.

To survive, grow, and reproduce, plants must maintain a ________ carbon balance.

Spongy passages, or ________, allow for the transport of oxygen and other gases to submerged roots.