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Identify the incorrect pair of statements:
I) The number of stamens in 5 flowers of Allium is equal to the number of stamens in 5 flowers of Solanum.
II) The microsporangia of Hibiscus and Asparagus each contain 80 pollen grains. Therefore, the ratio of the number of pollen grains produced from each stamen in these two plants is 1:1.
III) The ratio of the number of stamens in the flowers of Pisum to the number of stamens in Datura is 2:1.
IV) The number of carpels in a flower of Smilax is equal to the number of carpels in a cyathium inflorescence.
I, II
II,III
III,IV
IV,I
Answers (1)
The first statement is incorrect because Allium has 6 stamens, while Solanum has 5 stamens. The stamen numbers for the given flowers do not add up to 30 and 25.
Regarding the second statement, it is generally correct. In dicots like Hibiscus, the pollen grains are formed by diploid microspore mother cells in the anther, which undergo meiosis to produce four haploid microspores. Each microspore then develops into a pollen grain through mitosis. However, the statement doesn't mention anything about the stamen number of Hibiscus or Asparagus, so I cannot comment on the validity of the last sentence. The third statement suggests that the stamen ratio in Pisum and Datura is 2:1, with a total of 10 and 5 stamens, respectively. However, the ratio given does not match the total stamen count provided. More information or clarification is needed to evaluate the accuracy of this statement. The fourth statement implies that there are similarities between some plants of both Smilax and Cyathium, but not all plants within those groups share these similarities.
Hence, the correct answer is option 1.
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