The nitrogen-fixing bacterium Rhizobium infects the roots

Chapter 27, Problem 27.32

(choose chapter or problem)

The nitrogen-fixing bacterium Rhizobium infects the roots of some plant species, forming a mutualism in which the bacterium provides nitrogen, and the plant provides carbohydrates. Scientists measured the 12-week growth of one such plant species (Acacia irrorata) when infected by six different Rhizobium strains. (a) Graph the data. (b) Interpret your graph. DRAW IT Rhizobium strain 1 2 3 4 5 6 Plant mass (g) 0.91 0.06 1.56 1.72 0.14 1.03 Source: J. J. Burdon et al., Variation in the effectiveness of symbiotic associations between native rhizobia and temperate Australian Acacia: within species interactions, Journal of Applied Ecology 36:398408 (1999). Note: Without Rhizobium, after 12 weeks, Acacia plants have a mass of about 0.1 g.

Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.

Becoming a subscriber
Or look for another answer

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back