HORT1001 Wk 14 Word Scramble
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| Question | Answer |
| Where are the microsporangia located? | Inside the androecium (stamens) in the anther |
| Starting with the microspore mother cell, how many meiotic and mitotic cell divisions are required to produce the mature male gametophyte? | 2 mitotic divisions and 1 meiosis |
| Where are the megasporangia located? | They are the ovules in the ovary in the gynoecium (carpels) |
| Is the female gametophyte diploid or haploid? | Diploid |
| Starting with the megaspore mother cell, how many meiotic and mitotic cell divisions are required to produce the mature female gametophyte? | 1 meiosis and 3 mitotic divisions Forms embryo sac with 8 cells total |
| How many nuclei are in the pollen tube just prior to meeting the egg cell? | 2 or 3. 1 vegetative and either 1 generative or 2 sperm depending on when the generative cell undergoes mitosis |
| Where is the apical cell of the embryo and what does it do? | The inner surface of the maturing ovule wall (seed coat), Held to the nucellus tissue by a suspensor formed by the basal cell |
| A heart-shaped embryo has two swollen lobes that give it the shape of a heart. What will those lobes become when the embryo is mature? | Cotyledons |
| Why do linked genes assort together? | They are very close together on the chromosome |
| If I showed you a frequency distribution with two sharp peaks, would you expect that it represents a qualitative or quantitative trait? With four sharp peaks, would you expect that it represents a qualitative or quantitative trait? | Qualitative |
| If I showed you a frequency distribution that looked like a mound with one high point, would you expect that it represents a qualitative or quantitative trait? | Quantitative |
| Would a breeder anticipate making greater gain from selection for a trait that has high heritability or low heritability? | High |
| If a characteristic is very heavily influenced by the environment and exhibits very little control by genotype, will the heritability be close to 0 (very low heritability) or close to 1 (very high heritability)? | 0, Low |
| When a megaspore undergoes three mitotic divisions, how many cells are produced in total from that single megaspore? | 8 |
| True or false, pollen morphology can be used to identify the genus and species that produced it. | True |
| Where in the flower are the microspore mother cells located? | In the anther |
| What tissue in the seed is formed by the union of a sperm cell from the male gametophyte with two polar nuclei from the female gametophyte? | Endosperm |
| The closer two loci are physically linked on the same chromosome: | the more likely the loci are to assort together. |
| If flower color data from 100 plants showed that 75% of the plants had red flowers and 25% had white flowers, you would suspect that: | flower color is a qualitative trait |
| If alleles are different, it is because they differ in: | the sequence of bases making up their DNA. |
| A plant’s genotype is: | the sequence of bases in the DNA of genes controlling plant traits. |
| For a plant characteristic that is inherited in a quantitative way, the influence of the environment on the plant: | is usually an important factor in determining the phenotype. |
| The hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in a plant is a: | gene |
| When a plant breeder makes a cross in a specific direction: | They are choosing which parent to use as male and which as female |
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kylee1542
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