This quiz works best with JavaScript enabled. Home > Plant > Genetics > Plant Genetics – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Plant Genetics Quiz 2 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Steven sets a brand new plant near the window. After several weeks Steven realizes the flower is starting to tilt towards the sunlight. What would be considered the stimuli in this scenario? A) Water. B) The dirt in the flower pot. C) The sunlight. D) The window. Show Answer Correct Answer: C) The sunlight. 2. Contain a plant's male reproductive cell A) Stamen. B) Pollen. C) Style. D) Stigma. Show Answer Correct Answer: B) Pollen. 3. Changes in an organism's environment that cause a response A) Tropism. B) Hormone. C) Stimuli. D) Response. Show Answer Correct Answer: C) Stimuli. 4. They enclose the egg cells inside the ovaries. A) Ovules. B) Anther. C) Seeds. D) Stamen. Show Answer Correct Answer: A) Ovules. 5. Roots grow downward in the soil in response to- A) Gravity. B) Sunlight. C) Water. D) Wind. Show Answer Correct Answer: A) Gravity. 6. Which of these is NOT a genetic trait? A) Color of fur. B) Length of tail. C) Scar on a leg. D) Height of a person. Show Answer Correct Answer: C) Scar on a leg. 7. A stimulus is ..... A) A change in an organisms surroundings. B) Process in which organisms grow larger. C) A reaction to a change in surroundings. D) Tropism. Show Answer Correct Answer: A) A change in an organisms surroundings. 8. The female part of a flower is A) Pistil. B) Stamen. C) Filament. D) Sepal. Show Answer Correct Answer: A) Pistil. 9. What do we call the result of the genotype (for example, the color of the peas)? A) Visible traits. B) Physiotrait. C) Genotype 2. D) Phenotype. Show Answer Correct Answer: D) Phenotype. 10. .....'s principles can be used to study heredity in dogs, cats, and sheep. A) Darwin. B) Mendel. C) Franklin. D) Smith. Show Answer Correct Answer: B) Mendel. 11. The male part of the flower is..... A) Pistil. B) Sepal. C) Ovaries. D) Stamen. Show Answer Correct Answer: D) Stamen. 12. Geotropism is a force that affects certain organisms. Which of the following is an example of a plant responding to the external stimulus of gravity? A) A seedling growing towards a sunny window. B) Plant roots growing down into the soil. C) Flowers producing nectar to attract bees. D) A potted plant wilting when it dries out. Show Answer Correct Answer: B) Plant roots growing down into the soil. 13. Tigers and household cats are members of the same family. Their sizes and other features are very different. What is the cause of the differences? A) Biochemical makeup. B) Domestication. C) Genetics. D) Habitat. Show Answer Correct Answer: C) Genetics. 14. Mendel did test crosses. What is the purpose of a test cross? A) To determine the parents phenotype (appearance). B) To determine the parents genotype. C) To determine the chance of producing a particular trait from 2 parents. D) To determine how many offspring can be produced by 2 parents. Show Answer Correct Answer: C) To determine the chance of producing a particular trait from 2 parents. 15. Gregor Mendel's principles of genetics apply to A) Plants only. B) Animals only. C) Pea plants only. D) All organisms that reproduce sexually. Show Answer Correct Answer: D) All organisms that reproduce sexually. 16. A root grows downward in a response to an.....stimulus A) External. B) Internal. C) Phototropism. D) Geotropism. Show Answer Correct Answer: A) External. 17. Yy is an example of..... A) A heteroygous phenotype. B) A heterozygous genotype. C) A homozygous phenotype. D) A homozygous genotype. Show Answer Correct Answer: B) A heterozygous genotype. 18. When a plant wilts due to a drought, it is responding to which of the following internal stimuli? A) Decreased water pressure within the plant cells. B) Lack of nutrients carried by water in the plant. C) Decreased rate of photosynthesis in the stem. D) Increased storage of glucose in the leaves. Show Answer Correct Answer: A) Decreased water pressure within the plant cells. 19. Two different genes for a trait (sometimes called hybrid). Bb A) Protein. B) Homozygous. C) Heterozygous. D) Genotype. Show Answer Correct Answer: C) Heterozygous. 20. The different forms of genes are known as A) Environment. B) Probability. C) Traits. D) Alleles. Show Answer Correct Answer: D) Alleles. ← PreviousNext →Related QuizzesPlant QuizzesPlant Genetics Quiz 1Plant Genetics Quiz 3Plant Genetics Quiz 4Principles Of Genetics Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books