Jun 14, 2023
An example of induced aerenchyma occurs in maize (corn; Zea mays) (Figure 24.19).
"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.
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An example of induced aerenchyma occurs in maize (corn; Zea mays) (Figure 24.19).
"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.
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… and Sounds of Joy. Image of the Week - January 21, 2019
CIL:38908 - http://www.cellimagelibrary.org/images/38908
Description: Color-enhanced scanning electron micrograph of the inside of a guinea pig inner ear showing the hearing organ, or cochlea. Running along the spiral structure are rows of sensory cells which respond to different frequencies of sound. The whole organ is just a few millimeters long.
Author: David Furness
Licensing: Attribution-NonCommercial-NoDerivs 2.0 UK: England & Wales (CC BY-NC-ND 2.0 UK)
Micro-Monsters Cosmos Magazine.Â
White Blood Cell and Fibrin. Image of the Week - March 26, 2018
CIL:39051 - http://cellimagelibrary.org/images/39051
Description: Colorized scanning electron micrograph (SEM) of a human white blood cell (leukocyte) on a mesh of fibrin. Fibrin is an important protein in the formation of blood clots.
Author: Anne Weston
Licensing: Attribution-NonCommercial-NoDerivs 2.0 UK: England & Wales (CC BY-NC-ND 2.0 UK)
Micro-monsters, Cosmos Magazine.Â
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The metabolic processes referred to above take place in the palisade cells and spongy mesophyll of the leaf (Figure 9.1). (...) Below the epidermis, the top layers of photosynthetic cells are called palisade cells; they are shaped like pillars that stand in parallel columns one to three layers deep (see Figure 9.1). (...) In the interior, below the palisade layers, is the spongy mesophyll, where the cells are very irregular in shape and are surrounded by large air spaces (see Figure 9.1). (...) Sun and shade leaves have contrasting biochemical and morphological characteristics:
Shade leaves increase light capture by having more total chlorophyll per reaction center, a higher ratio of chlorophyll b to chlorophyll a, and usually thinner laminae than sun leaves.
Sun leaves increase CO2 assimilation by having more rubisco and can dissipate excess light energy by having a large pool of xanthophyll-cycle components (see Chapter 7). Morphologically they have thicker leaves and a larger palisade layer than shade leaves (see Figure 9.1).
"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.
Scanning electron micrograph of a neutrophil (yellow) phagocytosing (ingesting) anthrax bacilli (orange).Â
Ebola Virus Particles by NIAID on Flickr