The organisms formerly classified in the Kingdom Protista ________
A) all contain chloroplasts
B) form a single monophyletic group
C) include the last universal common ancestor (LUCA) of life
D) are scattered throughout all branches of the eukaryote family tree
E) have a fossil record extending back 3.4 million years
D
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Your friends, who own a large citrus orchard, invited you to have dinner yesterday, and when you arrived, you found they had prepared a veritable feast on their patio. While dining, you discovered that the trees providing shade from the evening sun bore a variety of citrus fruit, including lemons, limes, oranges, and grapefruit – not on separate trees, as you would expect, but rather each of those trees were heavy with two or more types of citrus fruit each. One of your friends, noticing your amazement, laughed and said, “We planted fruit-salad seeds.” Obviously, that’s not the explanation, but how else could they have created their small fruit-salad canopy?
a. Lemons, limes, oranges, and grapefruit are the same fruit grown with exposure to various hormones. b. Pollen from multiple species are able to cross-fertilize, producing multiple unique fruit on each tree. c. Citrus trees are closely related, allowing for scions of multiple species to be grafted together. d. Blending together calluses from related plant species allows for the growth of chimerical plants.
Define the term speciation
What will be an ideal response?
Suppose you wanted to compare two different stain removers to learn which one was better at removing food stains from clothing. What is the independent variable?
A.) amount of stain B.) ability to remove stain C.) brand of stain remover
Many species of flowering plants reproduce asexually by __________.
Fill in the blank(s) with the appropriate word(s).