The cell theory consists of:
1. all living organisms are made up of cells
2. cells are the basic structural/organizational unit of all organisms
3. all cells come from pre-existing cells
Answer:
The answer is False. Although sensitive cells are <u>more abundant</u> in the <u>anterior portion</u> of the annelid´s body, in general, they are arranged in all the segments.
Explanation:
Annelids, such as the earthworm, have a variety of sensory cells:
- <u>Mechanoreceptors</u>, disposed of in groups in <em><u>each segment</u></em> of their body.
- <u>Photoreceptors</u>: Light-sensitive cells. Although they are <em><u>located in the whole </u></em>body, they are <em><u>abundant in anterior and posterior segments</u></em>, concentrated in the intern and dorsal part of the epidermis.
- <u>Humidity receptors</u> are the most sensitive cells and are <u>located in the first segments</u> of the earthworm body
- <u>Chemoreceptors</u>: sensorial cells cumulus forming a prominent tubercle with prolongations that extends through the cuticle. These tubercles form three rings <em><u>in each segment</u></em> but are especially <em><u>abundant in the anterior part</u></em> of the body.
The tegument is very rich in free nervous terminations, which functions might be tactile.
The percentage is 89%. Took this test and got the same exact question.
Answer:
7/16
Explanation:
<em>The proportion of the offspring from the cross that will have white flowers is 7/16.</em>
The presence of anthocyanin which determines purple coloration is conditioned by the C_ and P_ alleles. It means that the absence of one or both of C and P will result in white flowers.
Two plants, each with CcPp are crossed:
CcPp x CcPp
Offpring
1 CCPP - purple
2 CCPp - purple
2 CcPP - purple
4 CcPp - purple
2 Ccpp - white
1 CCpp - white
1 ccPP - white
2 ccPp - white
1 ccpp - white
Proportion of offspring with white flowers = 7/16
Proportion of offspring with purple flower = 9/16
<em>See the attached image for the Punnet's square analysis of the cross.</em>
