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3 years ago

Jan van Helmont concludes that plants gain most of their mass from

Biology

2 answers:

scoray [572]3 years ago

7 0

Water

Hope this helps :)

lutik1710 [3]3 years ago

5 0

The prevailing theory at the time was that plants grew by eating soil, and van Helmont devised a clever investigation to test this idea. He weighed a willow tree and weighed dry soil. He planted the tree, watered it and then left it for 5 years. He then re-weighed the tree, which had increased in mass by over 12 stone. He dried the soil and weighed it, showing that the soil was almost the same mass. He concluded that the tree grew by drinking water.

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A cladogram...a. Represents a hypothesis for the most likely evolutionary relationships among the set of organisms being conside

Dennis_Churaev [7]

Answer:

The answer is B.

Explanation:

A cladogram is a method that is used in biological research and it can be described as a simple diagram that demonstrates the relationships, similarities/differences between different species of animals.

Among the given options in the question, the correct one is B.

The cladogram uses parsimony to align the relationships among different subgroups of beings. Parsimony is a term that means choosing the simplest explanation for a given question.

I hope this answer helps.

7 0

3 years ago

Imagine that y-axis of each graph describes the rate of photosynthesis. Which of the graphs represents the

astraxan [27]

Answer:

a. A describes the effect of light intensity on photosynthesis.

Explanation:

In plants and other primary producers, photosynthesis is a biological mechanism that is vital to energy production. Energy-containing carbohydrates are derived from light, water and carbon dioxide in the form of glucose molecules.

The waste product oxygen is released as a result. Photosynthesis depends on many variables, including:

carbon dioxide concentration,
ambient temperature
and light intensity

It is a rate-limited reaction. Since photons or particles of light provide the energy required for the reaction, high intensities of light increase the photosynthetic rate. From the graph shown, as the intensity increases steadily, so does the rate- but at too high of an intensity, it ceases to affect the rate of photosynthesis, which becomes constant or plateaus.

Beyond this point, either the supply of carbon dioxide or the temperature limits the reaction. For instance, at high intensities tissues may even be damaged by high temperatures or heat.

6 0

3 years ago

Alexis's school class will be traveling to the city library next week to collect information on specific topics that each studen

AleksandrR [38]

Answer:

The cheetah can run faster than the tiger but not as fast as the jaguar.

3 0

3 years ago

What are three main types of point mutations that can occur during replication or protein synthesis?

Rom4ik [11]

The three types of point mutations that can occur during replication/protein synthesis such as Insertion, Deletion, and Frameshift.

8 0

4 years ago

What happens to the tension in the xylem when the stomata close and evaporation stops? It remains constant the moment the stomat

AVprozaik [17]

Answer:

Explanation:

What occurs when the stomata close and evaporation stops is that, the tension in the xylem continues to increase until the living cells of the leaf are fully hydrated. This happens according to the cohesion-tension theory of sap ascent.

This happens at night. Transpiration stops immediately when the stomata is closed. There is a cohesion between each water molecule and adhesion between the water molecules and the stem walls; water is held in the leaves ad stems when the stomata is closed this hereby increases the tension.

6 0

3 years ago