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Self-Pollination - Types of Pollination
Self-pollination refers to the transfer of pollen grains from the anther to the stigma of the same flower. In chasmogamous flowers the mature anthers and stigma are exposed to pollinating agents. In cleistogamous flowers fertilization is accomplished without exposing the sex organs (cleistogamy) to the atmosphere. Commelina benghalensis produces both chasmogamous (aerial) and cleistogamous (underground) flowers. Conversion of chasmogamous flowers to cleistogamous type depends on environment conditions, like temperature.
Why does having three color receptors (a.k.a. opsins) lead to a more complex color perception than just two?
Explain about the Chemical Carcinogens? Chemicals have been shown to be carcinogenic. Some are naturally occurring components of plants and microbial organisms. Some are synthe
In genetic recombination by crossing over what is the difference between parental gametes and recombinant gametes? Parental gametes are those gametes that keep the original lin
In the previous section we discussed the concept of species in detail and concluded that the concept of biological species and Mayr's definition of species have a wide acceptance a
A complete motor neuron is deleted from a frog and placed in a large volume of normal physiological saline. The neuron is healthy; it has a stable resting voltage of -70 mill
Manifestations of anemia that are directly due to the diminished oxygen-carrying capacity of hemoglobin include: Answer A. pale skin. B. bleeding. C. bone pain. D. fatigue.
What is commensalism? Commensalism is the ecological interaction in which one individual advantage while the other is neither benefited nor harmed. Commensalism is a harmonious
Commonly adapted different disposal methods by the municipal corporations are: (a) Open dumping (b) Land filling (c) Sanitary land filling pyrolysis (d) Incine
We have no antibodies against any blood group when we are born still we say that some blood groups are incompatible for us.why?
Convergent evolution is the development of the similar type of structures in distantly related organisms as a result of adapting to similar environments or strategies of life. For
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