Image
from article Hophornbeam
Leaves of the American hophornbeam (Ostrya virginiana). (Photo courtesy of D. E. Herman, USDA–NRCS PLANTS Database)
Search Results
Search Results
Refine this search
Search result paging links
1,075 results
Image
from article Banana
A single fruiting stalk produces the banana fruit bunch. (Credit: Charles T. Bryson/USDA Agricultural Research Service)
Image
from article Banana
Pseudostem of a commercial banana plant (Musa acuminata). (Credit: Forest and Kim Starr)
Image
from article Banana
Black Sigatoka disease, caused by the fungus Mycosphaerella fijiensis var. difformis, with leaf spotting and necrosis of a banana leaf. (Credit: Fred Brooks/University of Hawaii at Manoa)
Image
from article Isoetales
Morphology and anatomy of extant Isoetes. (a) Compact, cormose rhizomorph and unbranched stem of I. melanopoda. (b) More elongate, once-branched rhizomorph and stem of I. andicola. (After W. N. Stewart and G. W. Rothwell, Paleobotany and the…
Image
from article Polytrichidae
Polytrichum commune, member of the order Polytrichales, an acrocarpous perennial moss. (a) Female plant. (b) Serrate apex of leaf. (c) Male plant. (d) Cross section of leaf showing lamellae, which extend parallel to one another along the midrib of…
Image
from article Henequen
Henequen (Agave fourcroydes). (Photo by Peter Lapshin)
Image
from article Vacuole
Vacuoles are important membrane-bound intracellular compartments. (Left) Protozoan vacuoles serve a variety of functions. For example, contractile vacuoles are involved in osmoregulation, controlling the excretion of water from the cell. The food…
Image
from article Vacuole
A large lipid vacuole surrounded by a mantle of multinucleated giant cells. This type of vacuole occurs in exogenous lipid (lipoid) pneumonia, which is caused by inhalation or aspiration of a fatty substance. (Credit: Yale Rosen)
Image
from article Plant hormone
Plant hormones, such as gibberellins, are chemical messengers synthesized within plants, where they help to regulate a variety of physiological processes, including growth, differentiation, and development. The stunted plant on the left lacks…
