Functionally cross pollination involving a pollinating agent.
B
Genetically it is similar to autogamy since the pollen grains come from the same plant
C
Functionally and genetically autogamy
D
Both a and b are correct
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The correct Answer is:
D
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Assertion : Geitonogamy is functionally cross-pollination involving pollinating agent and genetically it is similar to autogamy since the pollen grains come from the another plant. Reason : Geitonogamy is the only type of pollination which during pollination brings genetically different types of pollen grains to the stigma.
When the pollers is transferred from anther to stigma of same flower, the pollination is called autogamy. (a) Cleistogamous flowers are invariably autogamous. Explain. (b) Geitonogamy is functionally cross pollination, but genetically similar to autogamy. Identify the statement. (Kerala Board 2017)
Assertion : Although geitonogamy is functionally crosspollination involving a pollinating agent, genetically it is similar to autogamy. Reason : In geitonogamy, pollen grains from the anthers of one flower are transferred to the sigma of another flower borne on the same plant.
Geitonogamy involves
Read the following statements, state true (T) or false (F) for them and select the correct option. (a) Cleistogamous flowers prevent geitonogamy as well as xenogamy. (b) Double fertilisation occurs in all spermatophytes. (c) In pea family, the single cotyledon is called scutellum. (d) Seeds of castor and coconut retain a part of endosperm during embryo development.
