_________ is a nutritive tissue composed of triploid cells in the seeds of flowering plants.
A. Phloem
B. Sepal
C. Microspore
D. Megaspore
E. Endosperm
Answer: E
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Which of the following statements is true of horsetails?
A. They have photosynthetic stems without leaves. B. They do not form roots. C. They produce tiny leaves arranged in whorls. D. Their stems are solid with densely packed photosynthetic cells. E. The fossil record indicates that they were always very small.
Which of the following represents the correct order?
Shown below are steps in making a transgenic plant. 1. Expose plant cells to Agrobacterium tumefaciens 2. Place plant cells on selective medium 3. Transform the recombinant plasmid into Agrobacterium tumefaciens 4. Insert gene of interest into Ti plasmid 5. Place plant cells on growth medium with plant hormones A. 5 - 1 - 4 - 3 - 2. B. 4 - 3 - 1 - 2 - 5. C. 4 - 1 - 3 - 5 - 2. D. 2 - 4 - 1 - 3 - 5. E. None of the choices shows the correct order.
Approximately, what percent of flowering
plants have animal pollinators?
a. 50 b. 60 c. 70 d. 80 e. 90
The transmission of DNA to offspring is referred to as ____
a. homeostasis b. development c. growth d. reproduction e. inheritance