Answer:
C) They are compressed during inhalation.
Explanation:
Birds breathe through rigid lungs that are located in the animal's thoracic region. The trachea of birds divides into bronchi that branch inside the lungs into very thin tubes called parabronchials or parabroncholes, which are irrigated by blood capillaries that allow gas exchange.
In birds there are no pulmonary alveoli (as in mammals), but air capillaries that depart from the parabroncholes. Oxygen gas passes from these capillaries to the blood capillaries, thus causing gas exchange.
In the lower portion of the bird's trachea, before branching the bronchi, we can find the syringe, a bag-like structure that has vocal cords responsible for the birds' scream and song. Most of the time, the sound emitted by birds serves to attract the mate, mark territory and prevent birds of the same species against some predator or other danger.
Answer:
The phenotype is a purple flower color.
Explanation:
If the dominant allele is present in the genotype, dominant traits will be expressed in the phenotype. Organisms that are heterozygous or homozygous dominant for a certain gene will always express that gene. Since this pea plant has the genotype Pp, the dominant allele (purple flower color) will be shown.
Individual, population, community, ecosystem
If the genetic DNAs crosses path with each other, any colour could be made, or breed. For example, my cat is a Siamese yet its mother was a tabby and its father a ginger.
