Anna's Thing 1-5

lichen - on tree  Lichen is formed by two different species coming together. A fungus and a photosynthetic microorganisms come together to form lichen which can withstand harsh environments and lack of water. Lichen have three different categories (crustose, fruticose, foliose) which are based on the lichen body forms.


gymnosperm - pine cones
Cone bearing plants (conifers) produce both male and female cones. Pictured is a megastrobilus, which is a seed producing female cone. Each scale is a modification of a branch and protected by these scales are the seeds. After the female cone is fertilized the ovules will turn into seeds and from there the seeds can be dispersed many different ways.



flower ovary- tomato
When the ovary of the tomato flower is pollinated the ovary then turns into the fruit (in this case the tomato). As a way to disperse the seeds of the tomato plant, the plant attracts animals to eat the tomato and then the animals carry off the seeds and excrete them.  


gymnosperm leaf-
These pine needles are considered gymnosperm leaves because their seeds/ovules aren’t protected like the angiosperms are. The trees rely on these leaves to help with photosynthesis.


amniotic egg-
An amniotic egg contains an aqueous membrane which allows the embryo to develop outside of the mother without drying out. Amniotic eggs evolved to allow aquatic species like reptiles to explore different habitats yet still produce viable offspring. Inside the extraembryonic membrane include a yolk sac, allantois, and a chorion to help with the development of the embryo.