what are the affinities of GNETUM with angiosperm??
Answers
Answer:
1.The general habit of the sporophyte of many species of Gnetum resembles with angiosperms.
2.Reticulate venation in the leaves of Gnetum is an angiospermic character.
3.Presence of vessels in xylem is again an angiospermic character.
Answer: The correct answer to this question is Presence of xylem vessel and absence of archegonia are the affinities of Gnetum with angiosperms.
Explanation:
Gnetum has a place with gymnosperms yet shows similitudes with angiosperms on one hand and shows contrasts with different gatherings as cycads and conifers simultaneously.
Similarity with the angiosperms.
(I). Overall propensity, it is climber as tree-like
(ii). Leaves are expansive, green and with reticulate venation.
(iii). Archegonia are out and out missing in the female gametophyte.
(iv). Nonattendance of free atomic division in the undeveloped organism sac.
(v). Endosperm finishes its improvement after the treatment.
(vi). Xylem vessels are available.
These similitudes with angiosperms, isolates it from different group of gymnosperms, for example cycas and pinus.
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