The two classes that make up the angiosperms are:
a. Mosses and club mosses
b. Ginkgos and cycads
c. Monocotyledons and dicotyledons
d. Horsetails and ferns
e. Conifers and gnetophytes
Answer: c. Monocotyledons and dicotyledons
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The two chromatids of each replicated chromosome must separate from one another and segregate during
A) mitosis. B) meiosis I. C) meiosis II. D) both mitosis and meiosis I. E) both mitosis and meiosis II.
During a chemical reaction, atoms are ________
A) destroyed B) created C) rearranged D) destroyed and created
How can Leptospira interrogans be distinguished from other spirochetes?
A) It stains purple with the Gram stain. B) One end of the bacterium looks like a question mark. C) It is highly motile. D) It can be found in multiple locations in the body. E) It cannot be cultured on laboratory media.
Which of the following examples indicates the level of the best method for protecting biodiversity in the species-rich regions referred to as hot spots?
a. Individual elephants in the savanna b. All of the populations of all species in the savanna c. The entire population of elephants in the savanna d. The populations of all species and the abiotic components of the environment in the savanna.