35. Soil
Nitrogen Fixation
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- Multiple ChoiceWhich of the following organisms can fix nitrogen?1405views
- Multiple ChoiceIn root nodules, the plants provide __________, and the bacteria provide __________.1014views
- Multiple ChoiceLegumes (members of the pea family) have roots with swellings called nodules that __________.1308views
- Multiple ChoiceWhich of these describes the initial interaction between Rhizobium and a soybean root?1026views
- Textbook Question
Mycorrhizae enhance plant nutrition mainly by:
a. 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
1467views - Textbook Question
Which of the following activities of soil bacteria does not contribute to creating usable nitrogen supplies for plant use?
a. The fixation of atmospheric nitrogen
b. The conversion of ammonium ions to nitrate ions
c. The decomposition of dead animals
d. The assembly of amino acids into proteins
910views - Textbook Question
Epiphytes are:
a. Fungi that attack plants
b. Fungi that form mutualistic associations with roots
c. Nonphotosynthetic parasitic plants.
d. Plants that grow on other plants.
970views - Textbook Question
By trapping insects, carnivorous plants obtain ___________, which they need ___________ . (Choose the best answer.)
a. Water ... because they live in dry soil
b. Nitrogen ... to make sugar
c. Phosphorus ... to make protein
d. Nitrogen ... to make protein
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