2021大学慕课答案 植物生理学（全英文）(西北农林科技大学) 最新大学MOOC满分章节测试答案
- Plant Cells TEST 1
- Genome Organization and Gene Expression TEST 2
- Water and Plant Cells TEST 3
- Water Balance of Plants TEST 4
- Mineral Nutrition TEST 5
- Solute Transport TEST 6
- Light and Photosynthesis TEST 7
- Photosynthesis – The Carbon Reactions TEST 8
- Photosynthesis Physiological and Ecological Considerations TEST 9
- Translocation in the Phloem TEST 10
- Assimilation of Mineral Nutrients TEST 11
- Growth and Development TEST 12
- Phytochrome and Light Control of Plant Development TEST 13
- Blue-Light Responses TEST 14
- Auxin TEST 15
- Gibberellin TEST 16
- Cytokinins TEST 17
- Ethylene TEST 18
- ABA Biosynthesis and Signaling Cells TEST 19
- Brassinosteroids TEST 20
- The Control of Flowering TEST 21
- Abiotic Stress TEST 22
本答案对应课程为:点我自动跳转查看
本课程起止时间为:2021-04-01到2021-06-18
Plant Cells TEST 1
1、 问题:Which of the following tissue system is NOT one of the three major tissue systems in plants?
选项：
A:Meristem tissue
B:Ground tissue
C:Dermal tissue
D:Vascular tissue
答案: 【Meristem tissue 】
2、 问题:Which of the following types of ground tissue has the THICKEST cell walls?
选项：
A:Parenchyma
B:Collenchyma
C:Sclerenchyma
D:None
答案: 【Sclerenchyma 】
3、 问题:Lateral roots arise from ( )?
选项：
A:Pericycle
B:Vascular cambium
C:Endodermis
D:Epidermis
答案: 【Pericycle】
4、 问题: Which of the following statements about plant structure is CORRECT?
选项：
A:Root hair is made of dermal tissues.
B:Secondary cell walls are deposited outside of primary cell walls.
C:Pericycle in roots is equivalent to vascular cambium in stems.
D:None.
答案: 【Root hair is made of dermal tissues.】
5、 问题:Place the following steps of DNA packaging in proper order:I. Chromatin fiber II. Condensed chromatin III. DNA double helix IV. Looped domains V. Nucleosomes
选项：
A:III, V, I, IV, II.
B:III, V, IV, I, II.
C:III, I, V, IV, II.
D:I, III, V, IV, II
答案: 【III, V, I, IV, II.】
6、 问题:Which of the following statements about plant structure is correct?
选项：
A:Lateral roots arise from epidermis.
B:Secondary cell walls are deposited outside of primary cell walls.
C:The pith in stems is made of vascular tissues.
D:Root hair is made of dermal tissues.
答案: 【Root hair is made of dermal tissues.】
7、 问题:Which of the following statements about plant classification is WRONG?
选项：
A:Chloroplasts in plants and green algae contain chlorophyll a and b and β-carotene.
B:Plants share the evolutionarily derived traits for surviving on land that are absent in algae.
C:Mosses, hornworts, liverworts, and ferns are nonvascular plants.
D:Magnolia and its relatives, monocots, and eudicots are flowering plants (i.e., angiosperms).
答案: 【Mosses, hornworts, liverworts, and ferns are nonvascular plants.】
8、 问题:Which of the following statements about plastids is CORRECT?
选项：
A:The chloroplast is one type of chromoplasts because it contains a high concentration of chlorophyll pigment.
B:Chloroplast division is independent of nuclear division; therefore, the chloroplast does not require nuclear-encoded proteins to divide.
C:Both chloroplasts and amyloplasts can accumulate starch.
D:None.
答案: 【Both chloroplasts and amyloplasts can accumulate starch. 】
9、 问题:Which of the following processes does NOT take place in the nucleus?
选项：
A:Transcription
B:Ribosome synthesis
C:Translation
D:DNA replication
答案: 【Translation】
10、 问题:Which of the following statements about plant organelles is CORRECT?
选项：
A:The recycling of membrane vesicles – from the plasma membrane to the Golgi, from the trans to the cis face of the Golgi, or from the Golgi to the ER – is called anterograde movement through the endomembrane system.
B:Glyoxysomes are specialized peroxisomes found in oil-rich storage tissues of seeds in which fatty acids are oxidized.
C:Microfilaments have a bigger diameter than microtubules.
D:The minus ends of microtubules or microfilaments tend to be more active in growth than the plus ends.
答案: 【Glyoxysomes are specialized peroxisomes found in oil-rich storage tissues of seeds in which fatty acids are oxidized.】
Genome Organization and Gene Expression TEST 2
1、 问题:Which of the following statements about nuclear genome organization is CORRECT?
选项：
A:Nucleolar organizer regions are portions of chromosomes where ribosomal RNA genes are clustered and transcribed.
B:Centromeres are sequences located at the ends of each chromosome.
C:Telomeres are where sister chromatids adhere to each other and where spindle fibers attach during cell division.
D:Chromosome organization is random in the interphase nucleus.
答案: 【Nucleolar organizer regions are portions of chromosomes where ribosomal RNA genes are clustered and transcribed.】
2、 问题:Which of the following statements about transposons is CORRECT?
选项：
A:Transposons are mobile sequences within the genome.
B:DNA transposons make an RNA copy of themselves, which is then reversetranscribed into DNA before it is inserted in the genome.
C:Retrotransposons move from one position to another using a cut-and-paste mechanism catalyzed by transposase.
D:None.
答案: 【Transposons are mobile sequences within the genome.】
3、 问题:Which of the following statements about polyploids is CORRECT?
选项：
A:If polyploidy is restricted to somatic tissues, the terminology used to describe this state is endopolyploidy.
B:Allopolyploids contain multiple complete genomes of a single species.
C:Autopolyploids contain multiple complete genomes derived from two or more separate species.
D:Autopolyploids are always larger than their diploid progenitors.
答案: 【If polyploidy is restricted to somatic tissues, the terminology used to describe this state is endopolyploidy.】
4、 问题:Which of the following statements about plant cytoplasmic genomes is WRONG?
选项：
A:The origin of mitochondria is considered as an oxygen-using bacterium engulfed by another prokaryotic organism.
B:The origin of chloroplasts is considered as a photosynthetic cyanobacterium engulfed by a eukaryotic cell.
C:Mitochondrial inheritance is usually paternal in the majority of the plants.
D:Both mitochondria and plastids generally show uni-parent inheritance.
答案: 【Mitochondrial inheritance is usually paternal in the majority of the plants.】
5、 问题:Which of the following statements about features of a typical eukaryotic core promoter is CORRECT?
选项：
A:Enhancers must be located upstream from the promoter.
B:Repressors are trans-acting transcription factors that repress gene expression.
C:Activators are cis-acting transcription factors that activate gene expression.
D:None.
答案: 【Repressors are trans-acting transcription factors that repress gene expression.】
6、 问题:Which of the following is NOT considered as a source of double-stranded RNAs in plant cells?
选项：
A:The presence of microRNAs (miRNAs), which are involved in normal developmental processes.
B:The production of short interfering RNAs (siRNAs), which silence certain genes.
C:The introduction of foreign RNAs, either by viral infection or via transformation by a foreign gene.
D:DNA replication.
答案: 【DNA replication.】
7、 问题:Which of the following statements about protein degradation process is WRONG?
选项：
A:In chloroplasts, protein turnover involves ubiquitination and 26S proteasome.
B:Ubiquitination is initiated by ATP-dependent adenylylation of ubiquitin. This step is catalyzed by ubiquitin-activating enzyme E1.
C:After adenylylation, ubiquitin is transferred to ubiquitin-conjugating enzyme E2.
D:Ubiquitin ligase E3 transfers ubiquitin to a target protein, which may be polyubiquitinated.
E:The polyubiquitinated protein is then targeted to the 26S proteasome for degradation.
答案: 【In chloroplasts, protein turnover involves ubiquitination and 26S proteasome.】
8、 问题:Which of the following is NOT a type of epigenetic modification?
选项：
A:DNA methylation
B:Histone methylation
C:Histone acetylation
D:Ubiquitination
答案: 【Ubiquitination】
Water and Plant Cells TEST 3
1、 问题:Which of following statements about water loss and usage by plants is CORRECT?
选项：
A:The uptake of CO2 is coupled to the loss of water through a common diffusional pathway.
B:In the case of cacti, water is lost preferentially from outer layer during drought.
C:A small amount of the water absorbed by roots is lost by transpiration from the leaf surfaces.
D:The majority of the water absorbed by roots either remains in the plant to supple growth, or it is consumed in the biochemical reactions.
答案: 【The uptake of CO2 is coupled to the loss of water through a common diffusional pathway.】
2、 问题:Which of the following is NOT a property of water that makes water an excellent solvent?
选项：
A:Water molecules are of small size.
B:Water molecules can form hydrogen bonds.
C:Water molecules are nonpolar.
D: None
答案: 【Water molecules are nonpolar.】
3、 问题:Which of the following statements about the structure and properties of water is WRONG?
选项：
A:Water has high specific heat capacity.
B:Water has high latent heat of vaporization.
C:Water molecules are highly cohesive.
D:Water has a low tensile strength.
答案: 【Water has a low tensile strength.】
4、 问题:Which of the following statements about the surface tension of water is WRONG?
选项：
A:Compared to other liquids at the same temperature, water has an extremely high surface tension.
B:If the air-water interface is curved, surface tension produces a net force perpendicular to the interface.
C:“Wettable” surfaces have contact angles of greater than 90°; “nonwettable” surfaces have contact angles of less than 90°
D:None
答案: 【“Wettable” surfaces have contact angles of greater than 90°; “nonwettable” surfaces have contact angles of less than 90°】
5、 问题:Which of the following statements about the structure and properties of water is WRONG?
选项：
A: Cohesion is the mutual attraction between water molecules due to extensive hydrogen bonding.
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