The early embryos of vertebrates follow the same pathway of development; one structure that all vertebrate embryos have in common is the ________, which serves as a primitive support structure
Fill in the blank(s) with correct word
notochord
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In your vegetable garden you are growing yams. Yams are modified root tissue from the plant. What is the function of the yam for the plant?
A. It stores water for the plant in times of drought. B. It stores sugar for the plant. C. It provides greater surface area for water absorption. D. It provides greater surface area for the growth of additional root meristems.
Which of the following is TRUE of both T cells and B cells?
A. They are lymphocytes. B. They recognize specific antigens on the cell surface. C. They have class I MHC molecules on their cell surface. D. They are involved in the humoral immune response. E. All of the responses are correct.
Considering the traditional view of ecological
succession, which of the following plants would most likely be a pioneer species in a primary succession event?
a. an oak tree that produces acorns dispersed by squirrels b. a snapdragon flower pollinated by bees c. a dandelion which produces seeds asexually and disperses seeds by the wind d. it could be any of these e. it couldn’t be any of these
In the development of C. elegans, an embryo of 1090 cells then loses 131 cells. This is an example of what process?
What will be an ideal response?