A pine seed consists of
a. the embryo.
b. a female gametophyte.
c. a seed coat.
d. nutritive tissue.
e. all of these.
Answer: e
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Imagine you are comparing the nutrient content of phloem sap from two plants: one with mycorrhizae and one without mycorrhizae. How would you expect the nutrient content of these two phloem samples to differ?
A. Phloem sap from the mycorrhizae sample will have more phosphorus. B. Phloem sap from the non-mycorrhizae sample will have more phosphorus. C. Phloem sap from the mycorrhizae sample will have less phosphorus. D. The amount of phosphorus will be the same in both samples.
The end of floral shoot where a flower develops is called the ____
a. ovule b. calyx c. receptacle d. filament e. carpel
A point mutation alters
A) a single base. B) a chromosome tip. C) a centromere. D) only a purine.
A patient has come to you for a second opinion. "I have these mysterious lumps in my right armpit," he says, "The other doctor says we may have to remove them. What do you think?" You notice red scratches on the patient's right arm. "You must have a new kitten. Cat scratch disease, from the bacterium Bartonella ," you say, "And we certainly won't remove those lumps, they are really important! Those are your..."
A. "thymus glands, where naive B and T cells encounter antigens and become activated." B. "lymph nodes, where T-cell receptor genes are rearranged as T cells mature." C. "lymph nodes, where naive B and T cells encounter antigens and become activated." D. "spleen, where hematopoietic stem cells produce lymphoid and myeloid progenitors." Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about the composition of tissue in the region of the armpit? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?