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How is gas exchange done in flatworms?
Platyhelminthes exchange gases exclusively by diffusion by their body surface. This is only possible because all cells are localized relatively near to the exterior as gases diffuse cell by cell (the flat shape of these worms is a feature that permits this type of respiration).
Most of the coronary blood flow to the left ventricular myocardium occurs during diastole. Thus the contracting heart obstructs its own blood supply. The systolic compressive force
What is the main means by which autotrophic beings obtain energy? The major means by which autotrophs obtain energy is photosynthesis (There are also chemosynthetic autotrophs)
These are solid, liquid or gaseous substance present in the atmosphere in such concentrations, as may be or tend to be injurious to human beings or other living creatures, plants a
Explain Theory or Principle of Determination of Coliforms? Coliforms are gram negative, non-spore forming, facultative anaerobic bacteria which produce acid and gas on lactose
What are the major morphological differences between monocot plants and dicot plants? The main differentiation criteria among monocots and dicots are: number of cotyledons (see
Explain the work of Linnaeus in animal Taxonomy? In 18th century, the work of Linnaeus and his followers (Haartman, 1751, 1764, Kolreuter, 1761-66) helped systematic to advance
the main excretory system in lower animals
The NYQUIST LIIMIT-It is a sampling phenomenon, which limits the maximum fiequemcy shift measurement to one half of the sampling frequency (PRF). By its nature, pulse wave
Codex code of practice Codex Alimentarious Commission (CAD) was established in 1963 with the objective to develop International Food Safety Standards to protect human health, w
Lipid Digestion Digestion of fats is also similar in both invertebrates and vertebrates. Lipases are the - enzymes that hydrolyse fats. A single lipase can catalyse many step
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