Complete question:
Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower.
Which answer correctly identifies the function of each structure or group of structures in the reproduction of the plant?
X- pollen production
Y- pollen transfer
Z- production of eggs
X- attraction of pollinators
Y- production of male sex cells
Z- egg production
X- production of eggs
Y- pollen transfer
Z- pollen production
X- production of eggs
Y- pollen production
Z- pollen transfer
Answer:
X- attraction of pollinators
Y- production of male sex cells
Z- egg production
Explanation:
Flowers are reproductive structures in charge of sexual reproduction through the production of seeds.
<u>Z</u><u>, Feminine reproductive structures:</u>
- The central structure is known as a carpel, also recognized as the pistil.
- The base of the carpel forms the<u> ovary</u>, in which the eggs are produced and where the zygote develops.
- The opposite extreme of the carpel is the<u> stigma</u>, in the superior part. The stigma is a sticky surface where the pollen grains get attached.
- The ovary and the stigma are connected by a filament named <u>style</u>.
<u>Y,</u><u> Masculine reproductive structures</u>:
- The pollen grains, or male sex cells, are produced in the stamens.
- The stamen has an<u> anther</u> where the pollen is produced, and a <u>filament</u> that provides support.
When mature, pollen grains are driven to the stigma of the same flower or other flowers of the species, where they stick. Once in the stigma, the pollen grains move to the ovary, where they meet the egg and fertilize. The zygote develops in the ovary.
<u>X,</u><u> External non-reproductive structures:</u>
Flowers also have external structures known as <u>petals</u> and sepals. These structures are modified leaves whose principal function is to protect the flower´s fertile parts and attract pollinators. Petals characterize as having many different colors that make the flower more attractive to insects and some animals. When they visit a flower searching for their recompense, the flower´s pollen grains transfer to the insect´s body. The insect transports the pollen to the next visited flower, leaving it in the stigma of the second flower.
Answer:
The correct answer is: Spontaneous Recovery
Explanation:
Spontaneous Recovery refers to the phenomenon of reemergence of a response that was previously extinguished after a period of non-exposure. This concept involves learning and memory and was proposed by the Russian physiologist, Ivan Petrovich Pavlov.
This phenomenon is associated or connected with the learning procedure, known as the classical conditioning.
<u>Therefore, in the given situation the reemergence of good feelings triggered by cologne is an example of </u><u>Spontaneous Recovery.</u>
I'm sorry, I tried to do this but my junky computer wouldn't let me.... good luck :)
Answer:
1.) 80 chromosomes in each of the daughter cells. 2.) Two daughter cells are produced. 3.) The daughter cells are identical.
Explanation:
1.) In mitosis, a parent cell divides to form two daughter cells through the mitosis phases creating the same amount of chromosomes for each daughter cell as the parent cell.
2.) The parent cell divides to form the two daughter cells in cytokinesis.
3.) The daughter cells are direct replicas of the chromosomes in the parent cell unless there is a mutation in the DNA when it is being copying.