Question

All plants require nitrogen in forms they can absorb through their roots, and that accessible nitrogen is provided by certain soil bacteria. While many plants rely on the activity of free-living soil bacteria for ammonium ions (nh4+) and nitrate ions (no3−), some plants form extremely close symbiotic relationships with nitrogen-fixing bacteria. For example, rhizobium bacteria (one type of nitrogen-fixing bacteria) take up residence inside the root cells of legume plants, which include peas, soybeans, and clover. In this activity, you will indicate how the legumes and the rhizobium bacteria are affected by this symbiosis? Drag each phrase to the appropriate bin. If the phrase applies to both plants and bacteria in the legume-rhizobium relationship, drag it to the "both" bin. If the statement applies to neither plants nor bacteria in the legume-rhizobium relationship, drag it to the "neither" bin. Note that a bin may remain empty.

Answer 1

Answer:

Plants

N/A

Bacteria:

gain carbohydrates

gain protection

Both:

benefit overall

gain fixed nitrogen

Neither:

are harmed overall

Explanation:

Plants

N/A

Bacteria:

gain carbohydrates

gain protection

Both:

benefit overall

gain fixed nitrogen

Neither:

are harmed overall

Legumes and Rhizobium bacteria have evolved a mutualistic relationship in which both species get benefit by their own way. The Rhizobium bacteria gain carbohydrates and protection from the plant whose roots they are inhabiting.

There are also some nitrogen-fixing bacteria can fix nitrogen in their free state, but Rhizobium bacteria cannot fix nitrogen in free form, they synthesize nitrogen only when they are living inside a legume's roots. So finally, both the plant and the bacteria gain fixed nitrogen from the relationship.