  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.
Light & Temperature. Plants also need sunlight to grow. Light is used as energy for making food, a process called photosynthesis. Too little light can make plants weak and leggy looking.They will also have fewer flowers and fruits. Temperature is important too.n addition to essential nutrients found in soil (from organic matter and micro-organisms), soil provides an anchor for plant roots and helps support the plants. Light & Temperature Plants also need sunlight to grow.