Upon closer inspection of the leaves of "flower of stone," one can observe tiny, cone-like structures. Each cone-like structure emits spores of two different sizes
Further investigation also reveals that the roots of "flower of stone" branch only at the growing tip of the root, forming a Y-shaped structure. Based on these additional observations, which of the following can be properly inferred about "flower of stone"?
1. It is heterosporous.
2. It is a fern.
3. The cone-like structures are sori.
4. It is a lycophyte.
5. It has separate male and female gametophytes.
A) 1 and 5
B) 2 and 3
C) 1, 2, and 3
D) 1, 4, and 5
D
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The organ responsible for excretion of both urine and
feces “F” is called the a. mouth. b. crop. c. gizzard. d. secreting portion of stomach. e. cloaca.
What stage is it when replication occurs in a cell?
What will be an ideal response?
All of the following are examples of adaptations EXCEPT
A) flower coloration that attracts pollinators. B) larger teeth in beavers for gnawing wood. C) mice learning a maze to get food. D) different beak shapes for birds that eat seeds or insects. E) insects that resemble twigs.
A cross between two pea plants results in 732 purple and 268 white plants. What is (are) the genotype(s) and phenotype(s) of the parents that produced these offspring?
A. One parent is homozygous purple; second parent is heterozygous white. B. One parent is heterozygous purple; second parent is heterozygous white. C. Both parents are heterozygous purple. D. One parent is homozygous purple; second parent is homozygous white. E. One parent heterozygous purple; second parent homozygous white.