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How would you design, in principle, an experiment to test the hypothesis that a certain variety of lettuce seed needed daylight in order to germinate?
You would need as large a sample of seeds as was convenient for counting, say 30. The seeds would be provided with water and a suitable temperature. The seeds, in a suitable container, would be placed in a light-proof box or cupboard for a period long enough to allow germination.
The box or cupboard would not be opened during this period.
The similar number of seeds, from the same batch (same packet), would be given identical conditions of moisture and temperature but placed in daylight for the same period of time. At the end of this period the numbers of seeds which germinated in every case would be counted and compared.
Into which classes are mollusc divided? What are some representing beings of each class? The phylum Mollusca is separated into five major classes: pelecypods, or bivalves (Pele
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Q. What are the periods of the first meiotic division? Meiosis I is divided into metaphase I, prophase I, anaphase I and telophase I.
Haemolysis : Mechanical valves, bioprosthetic valves as well as valves repaired with annuloplasty rings may cause haemolysis and related anaemia. This is more common when there i
4 Put the following events in the most probable order. (a) Predatory birds poisoned by insecticide. (b) Trees sprayed with insecticide. (c) Earthworms eat leaves which f
In general what is the cause of the aneuploidies? In general the aneuploidies are caused by impaired assortment of chromosomes during meiosis. For instance, when the homologous
Liver necrosis?
Describe Chemical changes in fruits and vegetables The detailed chemical changes that occur when fruits and vegetables are boiled in water or steamed, canned, dried or frozen,
Define the V2 receptor antagonist A new drug named ANTI-V2R has been developed that is a V2 receptor antagonist. When ANTI-V2R binds to a V2 receptor, there is no binding of v
HEARIN G - Sound waves struck ear drum, it starts vibrations, these vibrations are carried to MIS → f. ovalis → S. vestibule → Hellicotrema → S. Tympani → f. rotundus → mi
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