Observe the following characteristics:(a) Dependent male and female gametophyte.(b) Ovules are borne on megasporophyll.(c) Presence of nucellus in ovule.(d) Presence of seed.Select the correct option representing the features that are true forCycas.(a) All (a), (b), (c) and (d)(b) Only (a), (c) and (d)(c) Only (b) and (c)(d) Only (c) and (d)
Question
Observe the following characteristics:(a) Dependent male and female gametophyte.(b) Ovules are borne on megasporophyll.(c) Presence of nucellus in ovule.(d) Presence of seed.Select the correct option representing the features that are true forCycas.(a) All (a), (b), (c) and (d)(b) Only (a), (c) and (d)(c) Only (b) and (c)(d) Only (c) and (d)
Solution
The correct option is (a) All (a), (b), (c) and (d).
Here's why:
(a) Cycas has dependent male and female gametophytes. The male gametophyte is the pollen grain, while the female gametophyte is the embryo sac within the ovule.
(b) In Cycas, the ovules are borne on megasporophylls. Megasporophylls are leaf-like structures that bear ovules.
(c) The presence of nucellus in the ovule is a characteristic feature of Cycas. The nucellus is the tissue that surrounds the embryo sac within the ovule.
(d) Cycas produces seeds. The seeds are formed after fertilization of the ovule by the pollen grain.
Therefore, all the characteristics (a), (b), (c) and (d) are true for Cycas.
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