DENDROLOGY AND SOCIETY
FAMILIES OF GYMNOSPERM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The ovular cone (female cone) where the megaspore waits to be fertilized
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A reproductive structure that is in charge of the pollination
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The seed of a gymnosperm
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The pollen cone (male cone) where the seeds are kept
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Detailed explanation-1: -Female cones are diploid tissue produced by the dominant sporophyte stage. Meioses occurs inside the female cone to produce megaspores. Megaspores develop, while still attached to the cone, into female gametophytes. Inside the female gametophyte, eggs are produced inside a special structure, the ovule.
Detailed explanation-2: -Female Cones – the megasporophylls form a cluster and are called as the female strobili or cones. They bear the ovules having the megasporangium. Thus produces the haploid megaspores and a megaspore mother cell. The megaspore mother cell undergoes meiotic division produces four megaspores.
Detailed explanation-3: -Female cone of Pinus is a modified long. It occurs on the main stem singly or in pairs. It is homologous to inflorescence of angiosperms. The female cone consists of numerous megasporophylls or female flowers or carpels, which are arranged around the cone axis in a spiral manner.