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(a) Explain any four outbreeding devices...

(a) Explain any four outbreeding devices that prevents autogamy. (b) What is apomixis?

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(a) The following contrivances ensure cross pollination:
(1) Decliny: it is the condition where one of the two sexes is absent in the flower and flower becomes unisexual male or female (diclinous). Such diclinous flowers may be borne either on the samme plant or on the two different plants. in such cases, cross pollination is the rule. e.g., maize cucurbiate.
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