Eight nucleate embryo sacs are (a) always tetrasporic
Eight nucleate embryo sacs are
(a) always tetrasporic
(b) always monosporic
(c) always bisporic
(d) sometimes monosporic, sometimes bisporic and sometimes tetrasporic
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Correct option (d) sometimes monosporic, sometimes bisporic and sometimes tetrasporic
Explanation
Megaspore is a haploid structure which divides and gives rise to embryo sac which is also called as female gametophyte.
Eight-nucleate embryo sacs may be monosporic (e.g. Polygonum) or bisporic (e.g. Allium) or tetrasporic (e.g. Adoxa).
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