BIOLOGY HIGH SCHOOL

The ___ is also known as the age of fishes.a. Cambrian
b. Devonian
c. Permian
d. Vendian

Answers

Answer 1
Answer: The answer is Devonian.
Devonian is also known as the age of fishes.Devonian is named after the word Devon, a country somewhere south western England. This age of fishes began the domination of the fishes.

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4. An animal that relies on a digestive tract for digestion breaks down food bya. both intracellular and extracellular digestion.b. extracellular digestion onlyc. neither intracellular nor extracellular digestion.d. intracellular digestion only

Answers

The answer is b. An animal that relies on the digestive tract for digestion breaks down food via extracellular digestion. The digestive tract uses mechanical and chemical processes to digest the food. Extracellular digestion is a type of digestion that happens in an opening as part of a digestive system where the nutrients produced from digestion is transferred to the blood or other body fluids. The digestive tract serve as the opening.

Which of these statements about animal cells and plant cells is true.?

Answers

A cell is the most basic form oflife. It is what most of the organisms are made off. For the organism tofunction, the cell must also function. It has organelles too that helpsfunctions what the microorganisms need. A leaf cell contains chloroplasts thatanimal cells and animal cells do not have. The chloroplast is where the photosynthesis happens. It needs sunlightfor the process of photosynthesis. Notice that the leaf has a broader surfacearea to enable them to be exposed to the sun.

Answer:

B

Explanation:

I did the quiz

The MOST accurate way to determine the evolutionary relationship between two animals is through the examination of

Answers

The most accurate way to determine the evolutionaryrelationship between two animals is through the examination of their notochordsor their nervous system which primarily consists of the animal’s brain andspinal chord. Through this, one can know how primitive or how well-developed anorganism is according to e.g. brain size and functions.

Which organisms utilize a one-way air flow through their lungs to maximize airflow efficiency and oxygen consumption?

Answers

The answer is birds.

Birds utilize a one-way airflow through their lungs to maximize airflow efficiency and oxygen consumption. Although they inhale and exhale through one trachea, air flows in one direction through birds lungs. This is enabled thanks to air sacks. When birds inhale, air travels through the trachea, which further divides into two bronchi. The part of the air enters the lungs, and the other part remains in posterior air sacks. After the first exhalation, the fresh air from the posterior air sacks enters the lung and displace the spent air which is moved to the trachea. In case there is fresh air in the trachea, spent air is moved to anterior air sacks and after following exhale, it flows out from the trachea.

what happens to the thickness of the uterine lining when the level of progesterone reaches its highest level?

Answers

Answer:

Becomes thick with blood vessels passing through

Explanation:

Progesterone levels are the highest in the middle of the  luteal phase i.e at the eighth or ninth day of menstural cycle. it is the hormone which is released after ovulation. It is produced by the corpus luteum (an area created by the collapsed follicle) which consists of ovulated egg. At this stage the uterus lining gets thick and also estrogen is at high level. If the conception does not takes place the level of progesterone falls as the corpus luteum starts to break.
What happens at that point is that the lining sheds through the vagina otherwise known as the menstrual cycle which occurs if the egg has not been fertilized.

As one organism eats another, toxins can be spread through the food chain?
true or false

Answers

I think it is true because if another animal eats the animal that has the toxins ithat could also get them.
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