Why are marine phytoplankton smaller?
They are microscopic, single-celled organisms. Smaller objects have a greater surface area relative to their volume, and hence mass. Being small in the oceans confers several advantages: Phytoplankton cells are so small that their weight is, to a large extent, offset by the frictional drag exerted on them by the water.
Do Different plants have different rates of photosynthesis?
Changes in the condition of a leaf (aging, tearing, etc.), the arrangement of leaves on a branch, even the shape and size of a leaf affects the amount of photosynthesis that occurs in a plant; so much so that two different types of plants have developed over time, based on their tolerance for light.
What is chlorophyta in biology?
Chlorophyta is a taxonomic group (a phylum) comprised of green algae that live in marine habitats. Some of them are found in freshwater and on land. Some species have even become adapted to thriving in extreme environments, such as deserts, arctic regions, and hypersaline habitats.
What is the size of phytoplankton?
Phytoplankton cell size ranges over several orders of magnitude: from less than 2 μm in equivalent spherical diameter for the picoplankton, 2–20 μm for the nanoplankton and up to 20–200 μm for the microplankton11.
What is the difference between photosynthesis rate and net photosynthesis rate?
Gross photosynthesis is the total rate of carbon fixation (reduction of CO2) without considering that some of the CO2 is lost in respiration. Net photosynthesis is the carbon fixation rate minus the rate of CO2 loss in respiration.
Is there a maximum level of photosynthesis?
The maximum rate of photosynthesis occurs in the red and blue regions of the visible light as seen in the absorption spectra of chlorophyll a and b.
What are the 3 main types of algae?
Macroalgae are classified into three major groups: brown algae (Phaeophyceae), green algae (Chlorophyta), and red algae (Rhodophyta).
What is the difference between Charophyta and Chlorophyta?
The difference between Charophyta and Chlorophyta is that Charophyta forms a paraphyletic group. Charophyta are the division of green algae (freshwater). Rate! Rate! Looking for something else?
Which is more closely related to embryophytes or chlorophytes?
However, charophytes are more closely related to embryophytes than Chlorophyta. Charophytes possess enzymes such as class I aldolase, Cu/Zn superoxide dismutase, glycolate oxidase, and flagellar peroxidase which are seen in embryophytes.
Is Chlorophyta asexual or motile?
Many Chlorophyta species are motile, and they have flagella on the apical portion. Chlorophytes reproduce via both sexual and asexual methods. Fission, fragmentation and production of zoospores are three modes of asexual reproduction shown by chlorophytes.
What enzymes do charophytes have?
Charophytes possess enzymes such as class I aldolase, Cu/Zn superoxide dismutase, glycolate oxidase, and flagellar peroxidase which are seen in embryophytes. Moreover, charophytes use phragmoplasts during cell division.