Question:
In adventive polyembryony, an embryo develops directly from the diploid cell of ------------------------------.
In adventive polyembryony, an embryo develops directly from the diploid cell of ------------------------------.
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In adventive polyembryony, extra embryos arise from diploid cells of the nucellus and integuments without fertilisation.
Updated On: Nov 12, 2026
- zygote and nucellus
- nucellus and integuments
- integuments and zygote
- megaspore mother cell and nucellus
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
Polyembryony is the presence of more than one embryo in a seed. Adventive polyembryony is a type of apomixis.
Step 2: How embryos form
Diploid cells of the ovule tissue around the embryo sac, from the nucellus or the integuments, divide and grow into the sac to form embryos.
These embryos are genetically identical to the parent, as in Citrus and mango.
Step 3: Conclusion
The embryos arise from diploid cells of the nucellus and integuments.
Final Answer:
The embryos develop from the nucellus and integuments. \[ \boxed{\text{(B) }\text{nucellus and integuments}} \]
Polyembryony is the presence of more than one embryo in a seed. Adventive polyembryony is a type of apomixis.
Step 2: How embryos form
Diploid cells of the ovule tissue around the embryo sac, from the nucellus or the integuments, divide and grow into the sac to form embryos.
These embryos are genetically identical to the parent, as in Citrus and mango.
Step 3: Conclusion
The embryos arise from diploid cells of the nucellus and integuments.
Final Answer:
The embryos develop from the nucellus and integuments. \[ \boxed{\text{(B) }\text{nucellus and integuments}} \]
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