Answer:
Plant hormones are among the most important biochemicals affecting plant growth and yield production under different conditions, including stress. Plant hormones include auxin, abscisic acid, ethylene, gibberellins, cytokinins, salicylic acid, strigolactones, brassinosteroids, and nitrous (nitric) oxide. Plant functioning under stress is affected by plant hormones, which can help the plant to tolerate the environmental stresses. A wide range of actions have been illustrated for plant hormones. If it is possible to regulate the activities of plant hormones under stress, the production of tolerant plant species will be more likely. Soybean [Glycine max (Merr.) L.] growth and activities, including the process of nodulation and biological N fixation with the N fixing bacteria Bradyrhizobium japonicum, are also regulated by plant hormones. The important point about plant hormones is their interactions and cross talk, affecting their activity and efficiency in plants under different conditions, including environmental stresses. Some of the most important findings related to the behavior of the soybean and its symbiotic B. japonicum under environmental stresses as affected by plant hormones are presented.
Explanation:
Answer: Before about week 8 of pregnancy, a doctor may refer to the fetus as an embryo. The heart of an embryo starts to beat from around 5–6 weeks of pregnancy. Also, it may be possible to see the first visible sign of the embryo, known as the fetal pole, at this stage.
Answer:
1. The retina contains three kinds of colour receptors
Explanation:
Young-Helmholtz theory color vision says human can perceive colour due to the presence of colour receptors in the retina that receives colour in various wavelengths
To encourage good nutrition, ChooseMyPlate.gov recommends choosing foods that are high in :
<span>- fiber and dense in nutrients</span>
Answer:
Family Child Care Homes.
Child Care Centers.
Head Start and Early Head Start.
Preschool Programs.
School-Age Child Care.
Vacation and Summer Child Care Programs.
Care in Your Own Home.
Family, Friend, and Neighbor Care.
Explanation:
Family care remains the most common type of child-care arrangement across all marital and employment statuses. Three-quarters of full-time employed mothers (75.2 percent) utilize some form of family care at least part of the time, compared to 86.3 percent of part-time employed mothers.
