Although symbiotic relationships between nitrogen-fixing bacteria and plants are rare, many plants have symbiotic relationships with  

A.  other plants.
B.  nematode worms in the soil.
C.  filamentous algae.
D.  mycorrhizal fungi in the soil.
E.  soil insects.


D.  mycorrhizal fungi in the soil.

About 90% of all vascular plants have a mutualistic symbiotic relationship with mycorrhizal fungi. The fungi help the plant to extract phosphorus in the soil in exchange for sugar.

Biology & Microbiology

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The correct sequence of events in viral multiplication is

A) Penetration, replication, maturation, adsorption, assembly, release. B) Adsorption, penetration, replication, maturation, assembly, release. C) Assembly, maturation, replication, release, penetration, adsorption. D) Adsorption, release, maturation, replication, assembly, penetration. E) Replication, penetration, maturation, assembly, absorption, release.

Biology & Microbiology

Which of the following is false about Sargassum?

a. It is in the division Rhodophyta. b. Some species are pelagic. c. It is common in the Gulf Stream. d. It is buoyed by pnuematocysts. e. It forms a habitat for animals.

Biology & Microbiology

In radishes, red and white are the pure-breeding

colors, and long and round are the pure-breeding shapes, while the hybrids are purple and oval. The cross of a white oval and a purple oval will produce more a. red long than white long. b. purple round than white long. c. purple oval than purple long. d. purple long than purple round. e. purple round than white oval.

Biology & Microbiology

Which of the following is NOT involved in capturerecapture

methods of population sampling? a. DNA fingerprinting b. tags c. collars d. leg rings e. wing markers

Biology & Microbiology