BIOLOGY HIGH SCHOOL

what have scientist learned about the classification of amphibians, birds, and reptiles by studying their evolutionary relationships?

Answers

Answer 1
Answer: Scientists learned many things in studying and defining organisms or animals into group. The study behind this is called Taxonomy. This study is responsible for the classification of amphibians, birds, and reptiles. The study learned about the evolutionary relationships between the living and extinct organisms.
Answer 2
Answer:

Answer:

Reptiles are more closely related to birds than amphibians.  Reptiles and birds are so closely related that according to modern classification, they are part of the same group.

Explanation:

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Where are rain gauges located?
Some proteins on the surface of a mammalian cell contain carbohydrates. These proteins are synthesized by _______ and the sugars are added in the _______.a) cytoplasmic ribosomes; smooth endoplasmic reticulum b) the Golgi apparatus; rough endoplasmic reticulum c) ribosomes on the rough endoplasmic reticulum; Golgi apparatus d) mitochondrial ribosomes; smooth endoplasmic reticulum e) cytoplasmic ribosomes; plasma membrane
A TT tall pea plant is crossed with a tt short pea plant. What percentage of the offspring will be tall? a. All or 100% b. 3/4 or 75% c. 1/2 or 50% d. 1/4 or 25% e. none or 0%
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The scarlet cup fungus (Sarcoscypha coccinea) obtains its nutrition from decaying wood by releasing digestive enzymes into the wood and absorbing the digested products.I. Autotroph
II. Heterotroph
III. Saprotroph
A. III only
B. II and III only
C. I and III only
D. I, II and III

Answers

II and III only. The fungus is a heterotroph, since it's not making it's own food, but it's also a Saprotroph (since it externally digests dead organic materials; saprotrophs are a special subset of heterotrophs).

What molecule makes the trunk of a tree sturdy

Answers

Answer:

Cellulose

Explanation:

trunk is the main axis of a tree that supports the branches and is supported by roots. Cellulose makes it sturdy. Cellulose is the main substance in the walls of plant cells, helping them to remain stiff and upright.

Answer:

Cellulose, that is the molecule that makes a tree sturdy.

Explanation:

Which of the following organisms exhibits radial symmetry?Flatworm

Butterfly

Tadpole

Starfish

Answers

Answer: The correct answer is- Starfish.

Radial symmetry depicts a body plan of an organism, which can be divided into two equal halves when a plane from any angle passes through central axis of the body.

Starfish is radially symmetrical organism as any plane can divide its body into two equal halves.

On the contrary, flatworm, butterfly, and tadpole show bilateral symmetry ( only single axis/ plane can divide the body into two equal halves.

Among the listed organisms, only the starfish exhibits radial symmetry, which refers to an organism's body being shaped like a pie or barrel, allowing it to be divided into more than five symmetrical parts around a central axis.

Out of the provided organisms - Flatworm, Butterfly, Tadpole, and Starfish - the type that shows radial symmetry is the Starfish.

Radial symmetry refers to when an organism has a body shaped like a pie or barrel. This means it can be divided into five or more identical and symmetrical parts.

Body parts are positioned around a central axis, much like slices of a pie.

Think of a starfish with its arms extending out from the center - each arm is effectively a mirror image of the others, thus demonstrating radial symmetry.

Learn more about Radial Symmetry here:

brainly.com/question/32913358

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What will happen to a population of predators if there is a sudden increased in food for the prey

Answers

At first, the population of predators would spike and increase quickly, but then over time, gradually decrease.

(This is because at first there's more food, so the predators population increases. But overtime it begins to level out and the predators' population catches up with the prey, and in result, doesn't continue increasing.)
A sudden increase in food would result in prey eating and breeding which would mean more the predators could do the same. The predator population would increase with the population of its prey.

Medical science provides many ways to diagnose the cause of infertility and to treat it. . . What is the procedure that involves “washing” to separate healthy sperm from the unhealthy ones, and then placing this concentration of healthy sperm into the uterus around the time of ovulation?.

Answers

The answer is Intrauterine insemination.

  • In thistechnique of interauterine insemination, the female is given ovulation stimulating hormone or medication and after this monitoring is done to determine when the eggs mature.
  • After ovulation, a semen sample is washed to separate the sperms from the seminal fluid( removing the unhealthy ones).
  • Then a catheter is used to transfer the sperm or to insert the sperm directly in the uterus.
  • This process increases the chances of conception.

Answer:

intrauterine insemination

Explanation:

quizlet said so

What are the three steps of the cell theory?

Answers

1. All living organisms are composed of cells.

2. The cell is the basic unit of life.

3. New cells arise from pre-existing cells.
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Consider these phylogenetic trees. The first tree is based on physical characteristics. The second tree is based on structure, genetics, and evolutionary history. 2 phylogenetic trees are shown. The first tree has 3 branches that go to duck, platypus, and opossum. The second tree has 2 branches that go to duck and platypus. Opossum branches off of the platypus branch. Which can be concluded from a comparison of the two phylogenetic trees?
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