Question

Which statement about the process of conjugation in paramecia is false?

Select one:

a. Macronuclei in the resulting paramecia are genetically different from the macronuclei in the original paramecia.

b. The two resulting paramecia are genetically distinct from each other.

c. Within each paramecium, the original macronucleus is destroyed.

d. The two resulting paramecia have a combination of alleles.

e. The micronuclei that are exchanged are genetically different from each other.

What kind of specialized features do the lycophytes have for capturing light?

Select one:

a. Megaphylls

b. Microphylls

c. Flattened stems

d. Rhizoids

e. None of the above

In which stage does genetic recombination not occur?

Select one:

a. Horsetail sporangia

b. Moss sporophyte

c. Fern sori

d. Club moss strobili

e. Moss gametophyte

Which statement about sexual reproduction in Basidiomycota is true?

Select one:

a. Spores are borne in asci.

b. All hyphae are haploid.

c. The fruiting structure is diploid.

d. The only diploid cells are those that contain fused nuclei.

e. Spores are diploid.

Plants with active mycorrhizae

Select one:

a. display reduced levels of photosynthesis.

b. display enhanced absorption of water and minerals.

c. are heavily parasitized and die.

d. die early.

e. None of the above

Answer 1

1) b. The two resulting paramecia are genetically distinct from each other.

the new paramecia are now genetically identical as they have exchanged their haploid micronuclei and will have a combination of alleles.

2)b. microphylls are leaf-like structures which absorb light in lycophytes.

3)b. Moss sporophyte is the only diploid stage where genetic recombination takes place by meiosis.

4)d. The only diploid cells are those that contain fused nuclei. The diploid phase is a brief one.

5)b.display enhanced absorption of water and minerals. mycorrhizae are symbionts and helps with plant growth by [roviding moisture and nutrients.