Plant Biology Flashcards
6 cards from real Biology Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Plant Biology flashcards as text
What is the primary function of chloroplasts in plant cells?
Answer: To carry out photosynthesis
Chloroplasts are the organelles responsible for photosynthesis, converting light energy into chemical energy (glucose) using carbon dioxide and water.
Which tissue in plants is responsible for transporting water from roots to leaves?
Answer: Xylem
Xylem tissue transports water and dissolved minerals from the roots upward through the plant using a combination of root pressure, capillary action, and transpiration pull.
What is the role of stomata in plants?
Answer: Gas exchange and water vapor release
Stomata are tiny pores on leaf surfaces that allow carbon dioxide in for photosynthesis and release oxygen and water vapor through transpiration.
Which hormone promotes cell elongation and is involved in phototropism?
Answer: Auxin
Auxin promotes cell elongation and causes phototropism by accumulating on the shaded side of the plant, making those cells elongate more and causing the plant to bend toward light.
What is the function of root hairs?
Answer: To increase surface area for water and mineral absorption
Root hairs are extensions of epidermal cells that dramatically increase the surface area of roots, improving the efficiency of water and mineral absorption from the soil.
What is alternation of generations in plants?
Answer: A life cycle alternating between haploid and diploid stages
Alternation of generations is a reproductive cycle where plants alternate between a multicellular haploid stage (gametophyte) and a multicellular diploid stage (sporophyte).