match the following

A. endosteal niche	1. versatile cells that both generate bone and control the differentiation of HSCs
B. osteoblasts	2. line the blood vessels and also regulate HSC differentiation
C. reticular cells	3. send processes connecting cells to bone and blood vessels, and, unexpectedly
D. sympathetic neurons	4. can control the release of hematopoietic cells from the bone marrow.

#Question id: 11657

#Unit 10. Ecological Principles

In the following diagram, three models succession are represented. In this diagram A,B,C and D are the species  and arrows indicate replaced by

Based on the above, which statement is correct.

#Question id: 11658

#Unit 10. Ecological Principles

Directional community changes due to the cause of succession, factors involve such as

#Question id: 11659

#Unit 10. Ecological Principles

Which of the following steps are involved in stabilization of successful community?

#Question id: 11660

#Unit 10. Ecological Principles

Which of the following statements about the succession is true?

#Question id: 11661

#Unit 10. Ecological Principles

Autogenic factors results from the community and its organism for example filling in the pond by the dead organism from the pond itself. It included several other factors except____

#Question id: 11662

#Unit 10. Ecological Principles

During the successional process generation of community through the short time period successional process as well as long time successional process;

a) During short time period evolve pioneer community from the climax community

b) During short time period generation of the microbial community 

c) During long time period generation of end community (forest) from the pioneer community

d) During long time period generation of the microbial community