performed by
2. what is the function of the root - Holds the plant to ground
- collects nutrients
- collects water
3. the characteristics that make an angiosperm dif- they have fruits (from �owers)
ferent from the gymnosperms?
4. The idea that each species consists of actually or biological theory of speculation
potentially interbreeding individuals called __.
5. The phylogenetic system of classi�cation of the evolutionary relationships
organism unlike the arti�cial and natural system
refelects
6. Changes in the frequency of alleles microevolution
7. A population is de�ned as individuals of the same species
that occur together at one place
at one time
8. The bone structure of the forelimbs of horse, di erent functions retain evi-
bats, and whales indicated that structures with dence of descent from a com-
mon form
9. Most of the nitrogen in the air enters the bios- bacterial action
phere as useable nitrogen as a result of
10. Biologists who accept the biological species con- cladists
cept and insist that classi�cation must re ect evo-
lutionary history are called
, 11. For members of two di erent populations to be be able to interbreed
members of the same species
12. Which group of gymnosperms has the only one ginkgoes
species, which has survived human cultivation
13. The principle way for genetic variation to spread sexual reproduction
through a population is by
14. Without genetic variability, a population cannot evolve
15. Changes in a gene frequency that is not due to genetic drift
selection, mutation, or immigration is called
16. If a small group of individuals colonizes a newly founder e ect
formed island, the gene frequency of the popula-
tion is likely to be di erent than that which they
came from. This is called
17. What e ect do mycorrhizae have on the plants symbionts, help the plants take in
with which they are associated? minerals
18. The evolutionary tendency is the alteration of reduction of gametophyte to few
generations is cells, gametophyte is protected
by saprophyte
19. The removal of ___ of a root abolishes its response root cap
to gravity
20. A population is in Hardy-Weinberg equilibrium .49
and is polymorphic for only two alleles. If the
frequency of the dominant allele (A) is .07, the AA
individuals have a frequency of ___.