Plz help me with this asap

Which would not be used by a scientist to determine the evolutionary relationship between two species? A. bone structure structu

ss7ja [257]

a. bone structure is correct because many species look similar but we can't tell if they have an EVOLUTIONARY relationship unless we look at bone structure.

5 0

4 years ago

in animal muscular movement is caused due to change in position of proteins how do you think movement will be brought about in t

Colt1911 [192]

Answer:

Movement will be brought about in touch me not plants by the action of various chemicals present at the base of the leaf stalk. 

Explanation:

The leaves of touch me not plant stay upright due to turgor pressure. It is exerted by the water present within its cells. This pressure applies force against the cell wall enabling the plant to remain stiff.

When there is an external disturbance , parts of the plant releases certain chemicals including potassium ions that causes water to diffuse out of cells. This releases the turgor pressure and causes the leaves to shrink. 

7 0

3 years ago

The χ² value means nothing on its own--it is used to find the probability that, assuming the hypothesis is true, the observed da

SVETLANKA909090 [29]

<h2>Chi-Squared test.</h2>

Explanation:

The two genes are linked and are assorting together, leading to a ratio of phenotypes in the offspring that deviates significantly from 1:1:1:1.

Chi-squared test is a standard statistical study that is used to study the distribution of certain gene properties within a given population.

Chi-squared analysis help us to see and prove the degree of deviation of an observed phenomena from a theoretical assumption.

6 0

3 years ago

Q.1 What is the smallest level of organization that includes all orders?

kodGreya [7K]

Answer and Explanation:

What is the smallest level of organization that includes all orders? Class
Taxonomy is a system scientists use to group organisms based on similar habits. True
Homology is shared characteristics that have been passed down from a common ancestor.
What scientist is known as the father of modern taxonomy? Carolus Linnaeus
Binomial nomenclature is the system we use today to determine an organism's scientific name. True

8 0

3 years ago

Which of the following is true about photosynthesis?

il63 [147K]

Explanation:

Photosynthesis takes place within the chloroplasts.

Photosynthesizing cells in algae and plants have structures called chloroplasts. These contain chlorophyll, a specialized compound which facilitates the conversion of light energy to energy stored in carbohydrates in the process photosynthesis. Pigment molecules like chlorophyll in plants and other organisms reflect and absorb light at specific parts of light's electromagnetic spetrum.

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent.

Water supplies the chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II. Additionally, in the light dependent reactions, within chloroplasts of plants, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions. NADP and NADPH are integral to the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.