This set of Plant Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Organization of Genetic Material”.
1. Which was the first plant genome to be sequenced?
a) Solanum lycopersicum
b) Oryza sativa
c) Arabidopsis thaliana
d) Zea mays
View Answer
Explanation: Arabidopsis thaliana was the first plant genome to be sequenced. The plant genome project on Arabidopsis thaliana was completed and the outcomes were published in the year of 2000. This project was successful and thus paved the way for other plant genome sequencing projects.
2. The DNA of plant nuclear genomes is wrapped around the histone proteins.
a) True
b) False
View Answer
Explanation: The given statement is correct. The DNA of plant nuclear genomes is wrapped around the histone proteins. This forms nucleosomes, the fundamental subunit of chromatin. The resultant chromatins are then organized into chromosomes.
3. Which of the following plants has the largest genome size?
a) Hordeum vulgare
b) Paris japonica
c) Coriandrum sativum
d) Triticum aestivum
View Answer
Explanation: Plant genomes are generally large and complex in structure. Of all the plants that have been assayed, it is observed that Paris japonica has the largest genome, which is about 150 billion base pairs long. It has around 40 chromosomes.
4. What is the genome size of Lycopersicon esculentum?
a) Approximately 650 mb
b) Approximately 750 mb
c) Approximately 850 mb
d) Approximately 950 mb
View Answer
Explanation: The genome size of Lycopersicon esculentum (Tomato) is approximately 950 mb and it has 35,000 protein-coding genes, which is relatively small when compared to other plant genomes. Tomato is a diploid species with a set of 12 haploid chromosomes.
5. The genome size extensively vary within a species.
a) True
b) False
View Answer
Explanation: The given statement is incorrect. Usually, the genome size within a species does not vary extensively but remain almost constant. Few variations like deletion or insertion may occur in one or two base pairs.
Sanfoundry Global Education & Learning Series – Plant Biotechnology.
To practice all areas of Plant Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]
