Table of Contents
Does Cycas and Pinus have reproductive organs?
Female reproductive parts: Megasporophylls are the ovule bearing organs. In Pinus and Ephedra the megasporophylls are forming compact cones while in Cycas the megasporophylls are borne in succession of the leaves and are not forming any cone. The ovules are borne on the margins of the sporophylls.
What is the difference between male and female Cycas?
To begin with, cycads are dioecious, which means plants are either male or female. To distinguish between males and females, observe the cone as it is emerging. The male cone is more slender and possesses more and smaller sporophylls (cone scales).
How is Gnetum different from Cycas and Pinus?
Presence of vessel elements and absence of archegonia. Hint: Unlike other gymnosperms, Gnetnum possesses vessel elements in xylem which are characteristic of angiosperms whereas Cycas and Pinus lack vessel elements. Gnetum has leaves in reticulate venation which shows an angiosperm character.
What is common in between Cycas and Pinus?
Similarities Between Cycas and Pinus Their seeds are endospermic and the endosperm is haploid. Both do not develop flowers. Their cones are unisexual. Their sporophylls, the leaves, which bear sporangia occur in cones.
Is Cycas revoluta male or female?
The scientific name is Cycas revoluta, which in Latin identifies the plant as a cycad and describes the revolute nature of the leaflets. Cycads are dioecious, having both male and females. When the sago plants have sexually matured, the female sagos begin to flower producing a basketball-sized structure.
What is the common name of Cycas?
Sago palm : Cycas revoluta.
In which feature does Gnetum differ from Cycas or Pinus showing affinities with angiosperm?
Complete answer: In angiosperms, there are vessel elements in xylem, which is present in Gnetum and absent in Cycas and Pinus. Gnetum has leaves in reticulate venation which shows an angiosperm character.
How is the male reproductive structure of Pinus physically different from Cycas?
Male Cones You can observe a difference between Cycas and Pinus in their cones too. The male cone of cycads is large and terminal, bearing numerous microsporophylls while male cone of pines is small and clustered.
What is the difference between a male and female cycad?
What is the comparison of Cycas and Pinus?
Learn about the comparison of Cycas and Pinus. 1. A small palm-like tree. 2. Plant body differentiated into root, stem and leaves; the roots are of two types- normal and coralloid. 3. In the beginning the stem is tuberous, later on becomes columnar, un-branched and covered with persistent leaf bases.
How many species of Pinus are there?
Pinus is a plant genus of the gymnosperm group conifers. It is the biggest genus of the conifer family. There are approximately 121 species in this genus. Many of the Pinus species are ornamental plants used in parks and big gardens. Pine trees are popular as Christmas trees.
What are the characteristics of cycas plant?
Thus, the cycas plant has megasporophylls on female plants and pollen cones in male individuals. Moreover, these plants have two types of leaves namely foliage leaves and scaly leaves. Foliage leaves are pinnately compound, and they arranged spirally around the un-branched trunk. Leaves of the Cycas plants have a midrib without lateral veins.
Is Pinus a conifer?
Pinus is a plant genus of the gymnosperm group conifers. It is the biggest genus of the conifer family. There are approximately 121 species in this genus. Many of the Pinus species are ornamental plants used in parks and big gardens.