Bio 223 Midterm

16 important questions on Bio 223 Midterm

Leaves of a juvenile plant look different than those growing on the plant at maturity

Phase change

Large tropical trees often have specialized wall-like roots that support them and keep them from falling over.  These roots are:

Buttress roots

In the ABC hypothesis of flower formation, Cells influenced by the A gene only will become:

Stamens
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These bacteria convert NH4+ to nitrite (NO2-) and nitrate (NO3-).

Nitrifying bacteria

Some trees grow in wet, anaerobic soils.  They have specialized roots that allow root cells to access air.  These roots are:

pneumatophores

For a plant, gaining minerals such as potassium and calcium is easy. All the plant has to do is just pump them in.

False

Openings in the periderm that allow gas exchange

        lenticels

Everything external to the vascular cambium in a woody plant

Bark

Waxy deposit found in cork cells

suberin

Development of body form and organization of a plant

  morphogenesis

The process by which cells with the same genome become radically different adult cells

Cell differentiation

The interconnected cytoplasm of all the plant cells which are connected together by plasmodesmata

symplast

Free-living bacteria that live in the thin layer of soil around a plant's roots are called:

Rhizobacteria

Some plants that grow only in nutrient-poor soil, such as the Venus fly trap, pitcher plant, and sundew, have leaves modified into structures that supply them with nutrients.  These leaves are:

carnivorous leaves

In Plant cells, most growth in size is due to:

increasing the size of the central vacuole

All of the following are micronutrients  except for one.  Which is the macronutrient?

Calcium

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