Answer: The study, by Dr. Tim Brodribb and Dr. Taylor Field of the University of Tasmania and University of Tennessee, used plant physiology to reveal how flowering plants, including crops, were able to dominate land by evolving more efficient hydraulics, or 'leaf plumbing', to increase rates of photosynthesis.
Explanation: The reason for the success of this evolutionary step is that under relatively low atmospheric C02 conditions, like those existing at present, water transport efficiency and photosynthetic performance are tightly linked. Therefore adaptations that increase water transport will enhance maximum photosynthesis, exerting substantial evolutionary leverage over competing species.
The evolution of dense leaf venation in flowering plants, around 140-100 million years ago, was an event with profound significance for the continued evolution of flowering plants. This step provided a 'cretaceous productivity stimulus package' which reverberated across the biosphere and led to these plants playing the fundamental role in the biological and atmospheric functions of the earth.
Therefore, in Doppler Effect only the frequency and wavelength are changes and the wave speed does not change
The endosymbiotic theory hypothesizes that mitochondria and chloroplasts were formed when <u>prokaryotic </u>cells were engulfed by larger cells that were precursors to <u>eukaryotic </u>cells.
prokaryotic ; eukaryotic
300 Identified and confirmed with the exception of 200 that still need to be evaluated.
Answer:
Option C. Allowing molecules to pass through its cell membrane, is the correct statement.
Explanation:
Homeostasis refers to the maintaining of equilibrium state inside the cell. Homeostasis increases the size of the cell to make transportation more efficient. It also removes nitrogenous waste materials from the cell. It also stabilize water concentration inside the cytoplasm of the cells and make the cell hydrated.
