Answer:
TRUE
Stromal cells provide a microenvironment conducive to the growth of immature B cells. Immature B cells which readily bind to them will most likely continue to mature and exit the bone marrow into a secondary lymphoid organ where they will complete development.
Answer:
c. Each key is organized as a flowchart.
Explanation:
A dichotomous key is a device that enables users to recognise natural world objects, such as wildflowers, trees, reptiles, mammals, fish and rocks. it used for the Identification whereby groups of species are frequently divided into two categories with increasing sequential division, more information on the basic characteristics of a particular organism is released.
Dichotomous keys are represented in two ways including either as descriptive representation in which a series of paired statements arraged in a numbered sequence or as a branching flowchart (diagrammatic representation)
.
Hence, the correct option is c.
Answer:
vascular plants, the roots are the organs of a plant that are modified to provide anchorage for the plant and take in water and nutrients into the plant body, which allows plants to grow taller and faster.
Answer:
Antibiotics cannot kill viruses because bacteria and viruses have different mechanisms and machinery to survive and replicate. The antibiotic has no “target” to attack in a virus.
Explanation:
