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zhenek [66]
3 years ago
15

Adult flatworms have _____ symmetry.

Biology
2 answers:
BartSMP [9]3 years ago
7 0
The answer is bilateral
oksano4ka [1.4K]3 years ago
4 0

Answer: Bilateral symmetry

Explanation:

Bilateral symmetry is the symmetry in which when an organism is divided into two parts. When flatworms are cut into two halves by the central axis, then it is divided into two equal halves.

The bilateral symmetry of an organism creates two matching halves. If a line is drawn starting from the head of the organism which reaches to the tail divides the organism into two sides reflecting each other.

Hence, the correct answer is Option C

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I need help with 4.b please
VARVARA [1.3K]

Arteries: any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body.

Capillaries: any of the fine branching blood vessels that form a network between the arterioles and venules.

Veins: any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart.

They are all similar because not only are they all connected to the heart, but they transfer blood and nutrients all around the body. They are different by where they are located and how effective their function is.

7 0
4 years ago
Si una población crece mucho otra vez después de un cuello de botella con el paso del tiempo aumentará diversidad genética ¿por
sammy [17]

Answer:

los mecanismos capaces de generar diversidad actúan para incrementar la variabilidad genética en la población que sufrió el cuello de botella

Explanation:

Un cuello de botella se refiere a una reducción drástica en el tamaño de una población (por ejemplo, debido a una catástrofe natural). Un cuello de botella es un fenómeno que está asociado a la ​reducción en la variación genética y fijación de ciertos alelos en la población resultante, lo cual es causado por la deriva genética, es decir, debido al muestreo al azar de los individuos que formarán la población en la siguiente generación. Paulatinamente, los mecanismos capaces de generar variabilidad genética aumentarán nuevamente la diversidad de la población que sufrió el cuello de botella. En una población de reproducción sexual, la variación genética se genera mediante cuatro procesos diferentes: 1-mutación (es decir, la aparición de nuevos alelos debido a alteraciones en la secuencia de ADN); 2-recombinación (es decir, el intercambio de información genética entre cromátidas no hermanas durante la meiosis); 3-segregación independiente de cromosomas durante la meiosis (capaz de producir nuevas combinaciones de alelos) y 4-fertilización al azar (lo cual también incrementa el número de combinaciones entre gametos que darán lugar a un nuevo individuo).

4 0
3 years ago
Which of the following is an inference?
RSB [31]

Answer:

Well you didn’t state any possible answers but

an example of is inference is, if you see someone eating a new food and he or she makes a face, then you infer he does not like it.

Explanation:

7 0
3 years ago
Read 2 more answers
A primary consum has 13.000 joules. Based on the energy flow between trophic levels in an energy pyramid, how much energy would
babymother [125]

Answer:

B

Explanation:

As you move up the energy pyramid, consumers receive 10% energy (Joules) from the organism they are receiving from.

6 0
3 years ago
Anytime you speculate about a problem and think of an answer based on what you
Natalija [7]

Answer:

b. False

Explanation:

A scientific theory must have strong support from testable facts that are confirmed (or rejected) by observational and/or experimental procedures. The scientific method is a rigorous process that consists of arising a conjecture (hypothesis) which can be subsequently used to make predictions from its logical consequences, and finally to obtain information from empirical observations/experiments in order to obtain a conclusion about the veracity of the scientific claims (i.e., a hypothesis must be testable). In consequence, a scientific theory can not be based only on 'light' conjectures, but trustworthy observational data from the real world.

3 0
4 years ago
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