Answer:
Propagación vegetativa
Explanation:
La propagación vegetativa es un tipo de reproducción asexual vegetal a partir de células, tejidos u órganos (por ejemplo, hojas, tallos y raíces) capaces de dar origen a organismos genéticamente idénticos mediante mitosis. Este mecanismo ha sido explotado en mejoramiento genético y en agronomía a fin de reproducir plantas con características fenotípicas deseadas a partir de un número reducido de células somáticas. Las regiones de la planta capaces de dar origen a un nuevo organismos se conocen como propágulos, los cuales pueden ser rizomas (a partir de raíces), tubérculos (tallos), estolones (brote laterales), etc. Diferentes tipos de suculentas tales como, por ejemplo, <em>Sedum morganianum</em>, Sedum<em> rubrotinctum</em>, <em>Kalanchoe daigremontiana</em> y <em>Graptosedum</em> o “California Sunset” se reproducen vegetativamente mediante propágulos foliares.
Answer:
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Explanation:
Answer:
b) glycolisis
Explanation:
Glycolisis precedes the Krebs cycle and can take place under aerobic or anaerobic conditions. Under aerobic condition, energy is directed towards the Krebs cycle in the form of piruvate and NADH to create more ATP. Under anaerobic conditions piruvate does not enter the Krebs cycle and it is oxidized to produce lactate.
Answer:
False it is in the 17th century (1665)
Explanation:
He named the little blocks after cells (little rooms)
Answer:
B) the slow rate at which diffusion occurs over large distances.
Explanation:
The complexity of the respiratory system is direct proportional with the size of the organism. As an organism size increases, diffusion begins to take place over a larger distance and the ratio of surface area to volume is seen to decrease. In unicellular organisms, diffusion across the cell membrane is adequate for distributing oxygen to the cell unlike in multicellular organisms.
Diffusion is known to be a slow, gradual and passive transport activity. It is important that for diffusion to be a pratical way of supplying oxygen to the cell, the amount of oxygen intake must be the same as the amount of diffusion across the membrane. This implies that, if the cell happens to be very large or thick, diffusion would not serve as the best means to distribute oxygen swiftly and in the right quantitiy to the inner region of the cell.
We can say that reliance on diffusion as a tool of supplying or distributing oxygen and extracting carbon dioxide is actually attainable only for small size organisms or the ones that possess a highly-flattened bodies, e.g. flatworms (Platyhelminthes).
Thus, this accounts for why Larger organisms had to develop specialized respiratory tissues, such as gills, lungs, and respiratory passages in conjunction with a complex circulatory systems, to disburse oxygen all through their entire body and to compensate for the slow rate at which diffusion occurs over large distances.
