Features that contributed to success on land include
__________ and __________ (two types of vascular
tissues). Fill in the blank(s) with the appropriate word(s).
Answer: xylem; phloem
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In a process called ____, cells lose their normal regulatory controls and revert partially or completely to an embryonic
developmental state.
a. metastasis b. embryogenesis c. induction d. determination e. dedifferentiation
Leaflike outgrowths at the base of the leaf stalk are referred to as:
a. axils. b. blades. c. lamina. d. petioles. e. stipules.
The carbon cycle makes carbon compounds continuously available in an ecosystem and delivers
A.) light energy to autotrophs. B.) water to all organisms. C.) carbon dioxide to animals within the ecosystem. D.) chemical energy to organisms within the ecosystem.
What are the three main components of modern cell theory?
What will be an ideal response?