What feature allowed seed bearing plants to finally break with their need for moist environments?
A. Vascular tissue
B. Spores
C. Pollen
D. Fruit
Ans: C. Pollen
You might also like to view...
Why is an AT-rich sequence characteristic of DNA replicators in all organisms?
What will be an ideal response?
What is an exception to the standard biological species concept used to define a species?
A) Species that coevolved cannot be distinguished using this concept. B) Natural interbreeding populations cannot be distinguished using this concept. C) Asexual species cannot be distinguished using this concept. D) Species that do not resemble one another cannot be distinguished using this concept.
Cells become progressively committed to specific patterns of gene activity and developmental fate through a process
known as: a. morphogenesis. b. determination. c. cell differentiation. d. pattern formation. e. growth.
Answer the following questions true (T) or false (F)
1. The amount of energy required for a reaction to occur is its activation energy. 2. Accumulation of a metabolic pathway product may result in decreased activity of the pathway enzymes. 3. As the concentration of substrate increases, the activity of the enzyme decreases.