Multiple Choice
Which of the following functions is an advantage of seeds compared to spores?
19
views
37. Plant Sensation and Response
Plant Defenses
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the context of plant defenses, where do primary producers such as phytoplankton most commonly thrive during winter months?
A
On exposed land surfaces with minimal snow cover
B
On the uppermost leaves of deciduous trees
C
In tropical rainforests experiencing dry seasons
D
In deeper ocean waters where nutrients are upwelled
Verified step by step guidance1
Understand the role of phytoplankton as primary producers in aquatic ecosystems. Phytoplankton are microscopic organisms that perform photosynthesis, converting sunlight into energy and forming the base of the marine food web.
Recognize that during winter months, sunlight availability decreases in many regions, and surface waters may become nutrient-depleted due to reduced mixing. Phytoplankton rely on nutrients such as nitrogen and phosphorus for growth.
Learn about the process of nutrient upwelling. Upwelling occurs when deeper, nutrient-rich waters are brought to the surface due to ocean currents or wind patterns. This provides essential nutrients for phytoplankton growth.
Understand why phytoplankton thrive in deeper ocean waters during winter. In these regions, upwelling replenishes nutrients, allowing phytoplankton to sustain their populations despite lower sunlight levels.
Connect this knowledge to the correct answer: Phytoplankton most commonly thrive in deeper ocean waters during winter months because nutrient upwelling supports their growth in conditions where surface waters may lack sufficient nutrients.
Related Videos
Related Practice
