Answer:
contains cellulose.
Explanation:
B
Answer:
one pair
Explanation:
Houseflys are like Diptera
Final answer:
Houseflies have two wings.
Explanation:
Houseflies, like many other insects, have two wings. These two wings are the primary flight appendages of the housefly and are attached to the thorax, the middle section of the insect's body. The presence of two wings is a characteristic feature of the order Diptera, to which houseflies belong.
The two wings of a housefly are typically transparent and membranous, allowing for flight. In addition to their two wings, houseflies also have two small, club-shaped structures called halteres located behind the wings. Halteres serve as sensory organs and are essential for the housefly's stability and balance during flight.
The presence of two wings and two halteres is a defining characteristic of true flies, which are members of the order Diptera. These wings play a crucial role in the housefly's ability to fly and are an integral part of their anatomy.
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Blocking would be best used 'by blocking on chicken type'. This means conducting separate trials for different types of chickens while testing the chicken feed because the type of chicken was determined to impact egg production.
In a scientific experiment where the aim is to conclude whether a certain chicken feed leads to higher egg production, blocking would be used to control the variables that might affect the result of the experiment. According to the information given, chicken's water intake is said to have negligible influence on egg production, however, the type of chicken does impact the production quantities.
Therefore, the ideal way to apply blocking to the experiment would be by differentiating the groups of chickens based on their type; this method is referred to as blocking on chicken type. The implication of this is, testing different chicken feeds on different types of chickens separately to ensure the accuracy of the experiment results by eliminating confounding factors.
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b: Arteries always carry oxygenated blood.
c: Veins always carry deoxygenated blood.
d: Arteries carry blood away from the heart.
e: Veins carry blood toward the heart.
Answer:
a: There is a unidirectional blood flow.
d: Arteries carry blood away from the heart.
e: Veins carry blood toward the heart.
Explanation:
The human circulatory system includes three main types of blood vessels: arteries, veins, and capillaries. Arteries are the blood vessels that carry the oxygenated blood from the heart to various body tissues. Veins are the blood vessels that pick the deoxygenated blood from body tissues and deliver to the heart. Vena cava is the largest vein that reaches the right atrium of the heart and delivers the deoxygenated blood.
The blood from the right atrium is carried to the right ventricle and finally lungs via the pulmonary artery for oxygenated. The oxygenated blood from the lungs is carried to the left atrium of the heart by a pulmonary vein. The oxygenated blood from the left atrium is carried to the left ventricle and finally to the body tissues by branches of the aorta. This unidirectional blood circulation of the human body ensures efficient delivery of oxygenated blood to body tissues.
In general, blood follows a unidirectional flow in the body with arteries carrying blood away from the heart and veins bringing it back. Though it's typical for arteries to carry oxygenated blood and veins to transport deoxygenated blood, there are noteworthy exceptions, like in the case of pulmonary arteries and veins.
Characterizing blood flow in the human body involves understanding the function and direction of blood movement in arteries and veins. a: There is a unidirectional blood flow is correct; blood does flow in a single direction, moving out from the heart, delivering oxygen and nutrients to tissues, then returning the blood to the heart. d: Arteries carry blood away from the heart and e: Veins carry blood toward the heart are both accurate characterizations of blood flow as well.
However, b: Arteries always carry oxygenated blood and c: Veins always carry deoxygenated blood are not completely true. While it's generally correct that arteries carry oxygenated blood and veins carry deoxygenated blood, there are exceptions. For example, the pulmonary arteries carry deoxygenated blood from the heart to the lungs to pick up oxygen and expel carbon dioxide, while the pulmonary veins carry oxygenated blood back to the heart.
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