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How has the position of the stomata changed in some plants to prevent excessive water loss by transpiration?
In the some plants that have leaves that receive too much sunlight the stomata concentrate in the inferior epidermis, so their heating is lower and less water is lost by stomatal transpiration. While in other plants of dry environments the stomata group in some regions of the leaf; over the surface of these areas the water concentration of the air is higher comparing to the environment and the loss of water by transpiration is thus reduced. Whereas some plants of dry climates also have stomata within cavities.
Distinguish between epithelial and connective tissues with respect to their cell arrangement? PROVIDE a specific example (for both tissue types) of how the arrangement of cells hel
What do protozoans "eat"? Do they move in search for food? Protozoans are heterotroph beings, i.e., they do not make their own food and therefore they require to search for it
NERV E FIBRES - Axon or dendrite of a nerve cell covered with one, two or three sheaths is called nerve fibre. Dendrites are surrounded only by one sheath. An axon may b
Definition of osmosis A) The best explanation of osmosis is 'The movement of water from a dilute solution to a concentrated solution across a partially permeable membrane'.
Explain the Confirmed Test - Most Probable Number Test? Confirmed test is carried out to rule out the possibility of any positive presumptive test because of the presence of no
according to the graph,which age is the amount og growth hormone produced at its highest?
In detail describe the structure and function of the heart and blood flow. Include the conduction system and blood vessels. Make your response specific to your audience who are a g
1. Explain why a gain of function would be a dominant effect and a loss of function would be a recessive effect. Which types of genes are each associated with: oncogenes or defect
Some of the characteristics of Bt cotton are: 1. Long fibre and resistance to aphids 2. Medium yield, long fibre and resistance to beetle pests 3. High yield and produ
Selective Destruction - Wildlife The selective destruction of one species of an existing fauna can produce equally unfortunate results. The perfect demonstration of unexpected
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