Female gametophytes develop specifically within what part of the flower?
A. anther
B. central cell
C. stamen
D. ovule
E. stigma
Answer: D
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In all deuterostomes, the cells divide parallel to and at right angles to the polar axis. This pattern is called _______________.
Fill in the blank(s) with the appropriate word(s).
Arrange the following three lines of defense from earliest to latest
1 = Adaptive immune system 2 = Physical barriers 3 = Innate immune system
a. 1, 2, 3 b. 2, 1, 3 c. 2, 3, 1 d. 3, 1, 2 e. 3, 2, 1
Based on the population pyramid shown above, you would expect the Indian population to
The diagrams above show the age structures of India, the United States, and China.
A. decrease over time because births are low.
B. stay constant.
C. decrease because the death rate is higher than the birthrate.
D. grow but not stabilize.
E. grow and then begin to stabilize.
What term is used to describe bone cells?
A. osteocytes B. trabeculae C. chondrocytes D. periosteum E. epiphysis