  Answer   Erythropoiesis is the process by which red blood cells (erythrocytes) are produced. In human adults, this usually occurs within the bone marrow. In huma â¦ ns with certain diseases and in some animals, erythropoeiesis also occurs outside the bone marrow, within the spleen or liver.
All plants use photosynthesis as a means of food production. They also all have their cells surrounded by cell walls in place of cell membranes. Plants also have large vacuole â¦ s in their cells, and all of them have chloroplasts (which is what makes them green).n addition, they all have body plans that include leaves, stems, and roots. Most seed plants live on land. Seed plants f â¦ ace many challenges, including standing upright and supplying all their cells with water and food. They meet these two challenges with vascular tissue.
Many plants produce special substances in their roots, leaves, flowers, or seeds that help them to survive. For example, some plants make nasty-tasting substances to defend themselves against plant-eating animals.any plants produce special substances in their roots, leaves, flowers, or seeds that help them to survive. For example, some plants make nasty-tasting substances to defend themselves against plant-eating animals.