Analogous Structures

Duck

Mosquito

     In the top picture, a duck is shown. Whereas, the bottom  picture shows a mosquito. The wings of the duck and mosquito are examples of analogous structures. Analogous structures are those structures that strike similarity in appearance, function, or arrangement. However, those pertaining animals have evolved independent of the other and have contrasting ancestors. The duck and mosquito both have wings which are structurally alike and the same goes for their purpose: flight. That being said, the duck and mosquito are different species and do not retain a common ancestor.

Stigma and Style of Carpel

     This is a picture of a white flower. It contains an example of the stigma and style of a carpel. A carpel is a long figure that serves as the reproductive system  in the center of a flower. In the carpel, there is a stigma which is a sticky tip. The stigma is where pollen is released from a pollinator for fertilization. A style of a carpel is the narrow stalk in the center connecting the flower ovary to the stigma, encompassing the major length of the carpel. It serves as the pathway for fertilization as the pollen tubes dwindle down sperm cells to the egg in the ovary. In this case, the white stalk in the middle fo the flower is the style  and the dark tip of the carpel is the stigma.

Cambium

      This is a portion of a tree that has been partially sawed off. This portion of the tree contains an example of cambium. Cambium is a collage of meristem cells that surround the stem of a plant and through this tissue phloem, xylem, or cork generate by dividing. This division can account for additional thickening in woody plants/ trees. The cambium on this portion of the tree is distinctly shown as the brown outline or border between the secondary thickening and the major wood.

Cuticle Layer of Plant

    This is an ordinary plant and its corresponding leaves. The plant's leaf is an example of a cuticle layer of a plant. A cuticle layer of the plant is the outermost covering that preserves the plant and guards it. This layer is usually made up of lipid and wax. On this leaf, there is a waxy thin layer that serves as protection for the plant.

Seed Dispersal

     This delicate plant is called a dandelion. This dandelion is an example of seed dispersal. Seed dispersal is any type of forced departure of a seed from its parent flower, whether it be an animal, water, or wind etc. The dandelion has seeds that were blown away by the wind and some by the aid of my hand movement, thus, showing seed dispersal.

Endotherm

     This feline creature is better known as a cat. This cat is an example of an endotherm. An endotherm is an animal that possesses the aptitude and necessity to generate internal heat with no dependence on external environmental factors. Endotherms are also regarded as " warm-blooded animals." This cat creates internal body heat to survive and does not rely on the environment outside to carry out this action. 

Ethylene

     These are a bunch of delectable and fairly sweet bananas. This bunch is an example of a plant that contains ethylene. Ethylene is a plant hormone that advocates several actions such as development, senescence and deterioration of dormancy, fruit ripening, and epinasty.The bananas showcased show the sign of ethylene as the color of the fruit transitions from green to yellow and ripens the fruit, making it sweeter.