35. Soil
Nitrogen Fixation
35. Soil
Nitrogen Fixation
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- Multiple ChoiceWhich of the following organisms can fix nitrogen?
- Multiple ChoiceIn root nodules, the plants provide __________, and the bacteria provide __________.
- Multiple ChoiceLegumes (members of the pea family) have roots with swellings called nodules that __________.
- Multiple ChoiceWhich of these describes the initial interaction between Rhizobium and a soybean root?
- Open QuestionMycorrhizae enhance plant nutrition mainly bya. absorbing water and minerals through the fungal hyphae.b. providing sugar to root cells, which have no chloroplasts.c. converting atmospheric nitrogen to ammonia.d. enabling the roots to parasitize neighboring plants.
- Open QuestionWhich of the following activities of soil bacteria does not contribute to creating usable nitrogen supplies for plant use?a. the fixation of atmospheric nitrogenb. the conversion of ammonium ions to nitrate ionsc. the decomposition of dead animalsd. the assembly of amino acids into proteins
- Open QuestionEpiphytes area. fungi that attack plants.b. fungi that form mutualistic associations with roots.c. nonphotosynthetic parasitic plants.d. plants that grow on other plants.
- Open QuestionBy trapping insects, carnivorous plants obtain ___________, which they need ___________ . (Choose the best answer.)a. water ... because they live in dry soilb. nitrogen ... to make sugarc. phosphorus ... to make proteind. nitrogen ... to make protein