|
1 | | Arabidopsis is an auxotrophic organism. |
| | A) | True |
| | B) | False |
|
|
|
2 | | The genome of Arabidopsis has very little repetitive DNA. |
| | A) | True |
| | B) | False |
|
|
|
3 | | The fertilized ovule of Arabidopsis contains diploid and triploid tissues. |
| | A) | True |
| | B) | False |
|
|
|
4 | | The genome of Arabidopsis is about equal to the C. elegans genome |
| | A) | True |
| | B) | False |
|
|
|
5 | | Spontaneous mutations in natural populations of Arabidopsis are not useful for laboratory study. |
| | A) | True |
| | B) | False |
|
|
|
6 | | The HY4 gene product in Arabidopsis is a blue light sensor. |
| | A) | True |
| | B) | False |
|
|
|
7 | | Arabidopsis information processing genes are homologous to genes found in yeast and mammals. |
| | A) | True |
| | B) | False |
|
|
|
8 | | The ABC model of flower development describes sequential activation of A, B, and C genes. |
| | A) | True |
| | B) | False |
|
|
|
9 | | The particular strain of Arabidopsis is its: |
| | A) | photomorphogenesis |
| | B) | vernalization |
| | C) | inflorescence meristem |
| | D) | apical meristem |
| | E) | ecotype |
|
|
|
10 | | Flowering time can be changed through: |
| | A) | photomorphogenesis |
| | B) | vernalization |
| | C) | inflorescence meristem |
| | D) | apical meristem |
| | E) | ecotype |
|
|
|
11 | | In Arabidopsis, _____________ gives rise to root and shoot tissue. |
| | A) | photomorphogenesis |
| | B) | vernalization |
| | C) | inflorescence meristem |
| | D) | apical meristem |
| | E) | ecotype |
|
|
|
12 | | In Arabidopsis, _____________ gives rise to flower tissue. |
| | A) | photomorphogenesis |
| | B) | vernalization |
| | C) | inflorescence meristem |
| | D) | apical meristem |
| | E) | ecotype |
|
|
|
13 | | Phytochromes and cryptochromes mediate: |
| | A) | photomorphogenesis |
| | B) | vernalization |
| | C) | inflorescence meristem |
| | D) | apical meristem |
| | E) | ecotype |
|
|
|
14 | | A meristem that cannot produce other meristems indefinitely is referred to as: |
| | A) | determinate. |
| | B) | omnipotent. |
| | C) | indeterminate. |
| | D) | multimeric. |
| | E) | none of the above. |
|
|
|
15 | | You have discovered an Arabidopsis mutant which has very elongated stems. Which of the following hormones might you apply to a wild-type plant to mimic this phenotype? |
| | A) | auxin |
| | B) | cytokinin |
| | C) | abscisic acid |
| | D) | gibberellins |
| | E) | ethylene |
|
|
|
16 | | Which of the following is a reason for the scarcity of maternal-effect and early zygotic mutations in Arabidopsis? |
| | A) | many plant genes are represented by single copies |
| | B) | self-fertilization |
| | C) | development is not dependent on a large egg |
| | D) | all of the above |
| | E) | none of the above |
|
|
|
17 | | What mutational agent would be most suitable for seeds of Arabidopsis? |
| | A) | T-DNA |
| | B) | ionizing radiation |
| | C) | transposable elements |
| | D) | intercalating agents |
| | E) | UV |
|
|
|
18 | | Which of the following are environmental cues for flowering in Arabidopsis? |
| | A) | temperature |
| | B) | photoperiod |
| | C) | moisture |
| | D) | a & b |
| | E) | all of the above |
|
|
|
19 | | You generate a null mutation in an Arabidopsis biosynthetic pathway, yet the adult mutant plant appears wild type. What is the most likely explanation? |
| | A) | photosynthesis provides all plant nutrients |
| | B) | mutations revert very quickly in Arabidopsis |
| | C) | presence of redundant genes |
| | D) | null allele is pseudogene |
| | E) | cotyledons supply missing nutrients |
|
|
|
20 | | Which of the following is not a characteristic of Agrobacterium-mediated transformation as carried out in the laboratory? |
| | A) | plant cell-bacterium contact |
| | B) | T-DNA inserts at specific sites |
| | C) | drug resistance markers can be transferred |
| | D) | can be used to mutate genes |
| | E) | all are properties |
|
|
|
21 | | Information gained from the study of Arabidopsis is only relevant to other plants. |
| | A) | True |
| | B) | False |
|
|
|
22 | | Development in the root of a seedling is suppressed in the absence of light. |
| | A) | True |
| | B) | False |
|
|
|
23 | | Development in the shoot apical meristem of a seedling is active in the absence of light. |
| | A) | True |
| | B) | False |
|
|
|
24 | | A mutation in the AGAMOUS gene will produce flowers with sepals, petals, petals, sepals. |
| | A) | True |
| | B) | False |
|
|
|
25 | | Mutations in LFY prevents the plant shoot from flowering. |
| | A) | True |
| | B) | False |
|
|
|
26 | | AG is expressed in all 4 whorls of the flower |
| | A) | True |
| | B) | False |
|
|
|
27 | | In most angiosperms, non-coding repetitive DNA makes up more than half of the genome. |
| | A) | True |
| | B) | False |
|
|
|
28 | | Corn transposable elements which can operate in Arabidopsis are exemplified by: |
| | A) | T-DNA |
| | B) | Ac/Ds and Spm/dSpm |
| | C) | homeotic genes |
| | D) | plant hormones |
| | E) | photoperiod |
|
|
|
29 | | Agrobacterium can transform plant cells by transferring: |
| | A) | T-DNA |
| | B) | Ac/Ds and Spm/dSpm |
| | C) | homeotic genes |
| | D) | plant hormones |
| | E) | photoperiod |
|
|
|
30 | | Abscisic acid is an example of: |
| | A) | T-DNA |
| | B) | Ac/Ds and Spm/dSpm |
| | C) | homeotic genes |
| | D) | plant hormones |
| | E) | photoperiod |
|
|
|
31 | | Tissue architecture is regulated in part by: |
| | A) | T-DNA |
| | B) | Ac/Ds and Spm/dSpm |
| | C) | homeotic genes |
| | D) | plant hormones |
| | E) | photoperiod |
|
|
|
32 | | In Arabidopsis, _________ can influence timing of flowering. |
| | A) | T-DNA |
| | B) | Ac/Ds and Spm/dSpm |
| | C) | homeotic genes |
| | D) | plant hormones |
| | E) | photoperiod |
|
|
|
33 | | Which of the following genetic techniques is utilized by Arabidopsis researchers? |
| | A) | insertional mutagenesis by Agrobacterium tumefaciens |
| | B) | tetrad analysis |
| | C) | Hfr mapping |
| | D) | P-element transposition |
| | E) | lambda phage |
|
|
|
34 | | Mutations in GA1 causes which of the following? |
| | A) | dwarf stature |
| | B) | no sepals |
| | C) | no carpels |
| | D) | all of the above |
| | E) | none of the above |
|
|
|
35 | | COP1 and PHYB are genes involved in: |
| | A) | germination |
| | B) | plant growth over long distances |
| | C) | flower development |
| | D) | light response |
| | E) | seed maturation |
|
|
|
36 | | LEC is a gene involved in: |
| | A) | germination |
| | B) | plant growth over long distances |
| | C) | flower development |
| | D) | light response |
| | E) | seed maturation |
|
|
|
37 | | Auxins and cytokinins are hormones involved in: |
| | A) | germination |
| | B) | plant growth over long distances |
| | C) | flower development |
| | D) | light response |
| | E) | seed maturation |
|
|
|
38 | | Water is the principal environmental factor influencing: |
| | A) | germination |
| | B) | plant growth over long distances |
| | C) | flower development |
| | D) | light response |
| | E) | seed maturation |
|
|
|
39 | | AP2, AG, and TFL1 are genes involved in: |
| | A) | germination |
| | B) | plant growth over long distances |
| | C) | flower development |
| | D) | light response |
| | E) | seed maturation |
|
|
|
40 | | Which of the following is produced by the inflorescence meristem? |
| | A) | cotyledons |
| | B) | side shoots |
| | C) | roots |
| | D) | hypocotyl |
| | E) | none of the above |
|
|