Intro to Plants
These are the two main groups of seed plants.
What are angiosperms and gymnosperms?
This plant cell provides flexible support.
What are collenchyma cells?
The light reactions occur in these membranes inside the chloroplast.
The visual light spectrum used by plants ranges roughly between these two wavelengths.
What are 400nm and 700nm?
The Calvin Cycle occurs in this part of the chloroplast.
What is the stroma?
This process converts sunlight energy into chemical energy stored in sugars.
What is photosynthesis?
This type of tissue covers and protects the plant body.
What is the dermal tissue?
This photosystem is responsible for splitting water and releasing oxygen.
What is Photosystem II?
The main photosynthetic pigment in plants.
What is chlorophyll a?
This enzyme catalyzes the fixation of CO2 to RuBP and is the arguably the most important enzyme in the world.
What is Rubisco?
Plants are classified as this type of autotroph because they use light as their energy source.
What are photoautotrophs?
These extensions of root epidermal cells increase surface area for absorption.
What are root hairs?
The electron carrier that becomes reduced during the light reactions.
What is NADP+?
These accessory pigments broaden the range of light a plant can use for photosynthesis.
What are carotenoids?
For every 3 CO2 molecules fixed, this many G3P molecules are produced.
What is 1 G3P molecule?
The basic plant organs.
What are roots, stems, and leaves?
This type of growth occurs at the tips of roots and shoots, increasing plant length.
What is primary growth?
Name the 3 reactants and 2 products of photosynthesis.
What are
6 CO2 + 6 H2O + light --> C6H12O6 + 6O2?
When a pigment absorbs light, its electrons are boosted to a higher energy level, known as this.
What is an excited state?
The ATP and NADPH used in the Calvin cycle come from this set of reactions.
What are the light reactions?
The evolutionary innovation that freed seed plants from needing water for fertilization.
What is the pollen grain?
What is phloem?
The difference in H+ concentration across this structure drives ATP synthesis in the light reactions.
What is the thylakoid membrane?
In photosynthesis, the difference between an absorption spectrum and an action spectrum shows that other pigments besides chlorophyll a contribute to photosynthesis. This was 1st demonstrated in this classic experiment.
What is Engelmann's experiment?
The Calvin cycle regenerates this 5-carbon molecule, enabling the process to continue.
What is RuBP (ribulose bisphosphate)?