What is the potential significance of root exudates?
What will be an ideal response?
ANSWER: Root exudates are organic compounds such as carbohydrates, enzymes and other proteins
that are released into the soil by roots. These root exudates may improve a plant’s access to
particular nutrients. Root exudates may also promote the growth of soil organisms that
convert nitrogen into a chemical form plant roots can absorb.
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Unlike primary villi, secondary villi have ____. Tertiary villi have that and ____.
A. Cytotrophoblasts; Mesoderm B. Capillaries; Spiral Arteries C. Mesoderm; Capillaries D. Syncytiotrophoblasts, Cytotrophoblasts E. Syncytiotrophoblasts, Spiral Arteries
The CRISPR-Cas system of gene editing is based on what naturally occurring biological process?
A) viral defense against eukaryotic defenses B) eukaryotic defense against viral infection C) viral defense against bacterial defenses D) bacterial defense against viral infection
A striking feature of Clostridium tetani that differentiates it from other pathogenic species of Clostridium is its ability to
A. produce a greenish pigment. B. form spores. C. form terminally located, spherical spores. D. grow aerobically
The main purpose of fermentation is to regenerate NADH and FADH2
Indicate whether the statement is true or false.