Give reasons for 5 stars! Energy spent on reproduction constitutes an organism’s

Question

Give reasons for 5 stars!

Energy spent on reproduction constitutes an organism’s “reproductive effort”. The figure below shows the relationship between reproductive effort (number of cones produced) and annual growth (as measured by radial growth) for the Douglas fir, Pseudotsuga menzieii. The line represents the general trend as defined by least-squares linear regression: y = -1.70x + 107.5 (n = 32; r2 = 0.71; p = 0.008). Answer the following questions:

7. What evidence did you use to determine your answer to the previous question?

A) y = -1.70x + 107.5

B) p = 0.008

C) r2 = 0.71

D) visual inspection of the data

8. For any given tree, increasing reproductive effort by one unit is expected to have which of the following effects?

A) increase number of cones by 100

B) decrease width of annual ring by 1.70 mm

C) both A and B

D) decrease width of annual ring by 107.5 mm

9. Variation in reproductive effort explains what percent of the variation in annual growth?

A) 1.70

B) 0.71

C) 71

D) 0.8

10. What ecological mechanism(s) would produce this observed pattern?

A) sexual selection

B) acclimation

C) genetic variation

D) principle of allocation (i.e., an energetic trade-off)

Explanation / Answer

7-A-means relationship between reproductive effort and annual growth is perfectly in linear relation, menas propornatly increasing

B-P close to 0 means the relation is highly significant

c- R2 close to 1 means a perfect fit of the line

d-visual inseption of the data is that relationship between reproductive effort and annual growth is significantly and positively correlated

8-C) both A and B

9-A) 1.70

10-B) acclimation

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