BIOLOGY HIGH SCHOOL

What drives the flow of water through the xylem? Question 4 options: passive transport by the endodermis active transport by tracheid and vessel elements the evaporation of water from the leaves the number of companion cells in the phloem

Answers

Answer 1
Answer:

Xylem

Explanation:

The flow of water through the xylem is driven by the evaporation of water from the leaves

  • The xylem of a plant is the system of tubes and transport cells that circulates water and dissolved minerals
  • Water flows more efficiently through some parts of the plant than others
  • Water absorbed by roots must cross several cell layers before entering the specialized water transport tissue referred to as xylem
  • These cell layers act as a filtration system in the root and have a much greater resistance to water flow than the xylem, where transport occurs in open tubes
  • Once in the xylem tissue, water moves easily over long distances in these open tubes
  • There are two kinds of conducting elements (i.e., transport tubes) found in the xylem: 1) tracheids and 2) vessels
  • Tracheids are smaller than vessels in both diameter and length, and taper at each end, vessels consist of individual cells or vessel elements stacked end-to-end to form continuous open tubes
  • Water movement is passively driven by pressure and chemical potential gradients
  • The bulk of water absorbed and transported through plants is moved by negative pressure generated by the evaporation of water from the leaves (transpiration)

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What makes a plant green?
What is an important characteristic of the plant cell wall?a. It is fluid.b. It is rigid.c. It is alive.d. It stretches.gy
Shedding of the exoskeleton is calleda. molting. b. bolting. c. incision. d. extrasensation
An organism has a nucleus and is multicellular but has no cell wall and no chloroplasts This organism belongs to which kingdom?A. Fungi B. Plantae C. AnimaliaD. Eubacteria

A walking stick, a type of insect that is a primary consumer, is an example of an organism using(A) aggressive mimicry.
(B) Batesian mimicry.
(C) camouflage.
(D) Mullerian mimicry.
(E) none of the above.

Answers

C camouflage it's not mimicking anything, it's blending in with its surroundings
c it uses camouflage

If a new species of honeycreeper were discovered, and it had a short, straight beak, which bird in this puzzle would likely be its closest living relative?

Answers

Answer:

The bird species that share the closest phenotypic characteristics are likely closest relatives.

Explanation:

Evolution theory states that species evolve gradually trough mutations (many of them are neutral), thereby those honeycreeper populations closest are more likely to share phenotypic features with each other.

Answer:

Po'oull

Explanation:

How are tumor cells different from normal cellsa:the tumor is a haploid and the others are diploids
b: mitosis is not regulated in tumor cells
c: tumor cells use meiosis to replicate
d: there are no chromosomes in tumor cells


answer please

Answers

The correct option is: b. mitosis is not regulated in tumor cells. Cancer cells are malignant tumor cells and  cancer is a disease of mitosis where the cell divides uncontrollably.

The tumor cells use mitosis to replicate and and cell cycle checkpoints are ignored so the mitosis is unregulated. So option c.  tumor cells use meiosis to replicate is incorrect.

Tumor cells contain abnormal number of chromosomes so option d. is incorrect as it contains chromosomes.

Due to aneuploidy of tumor cells it cannot be specifically haploid or diploid so option a is incorrect.

The mitosis is not regulated in the tumor cell that makes it different from a normal cell. The other characteristics are cell shape, nucleus shape, chromatin, and growth rate, etc.that make it different from a normal cell.

Further Explanation:

The difference between normal cells and tumor cells are listed in table 1 attached below.

Learn more-

  1. Learn more about a haploid cell during meiosis brainly.com/question/94813
  2. Learn more about how are mitosis and binary fission similar brainly.com/question/6462270
  3. Learn more about a dividing eukaryotic cell that is treated with a drug that inhibits the shortening of spindle microtubules. This will cause the cell division cycle to stop at the ____ stage.brainly.com/question/10767798

Answer Details:

Grade: High School

Subjects: Biology

Topic: Cell growth and development

Keywords:

Tumor, cell, nucleus, chromatin, spheroid, controlled, aerobic, respiration, nucleations, coarse, hypoxic, metastasis.

What type of relationship exists between tides and time?

Answers

the relationship that exists between tides and time is that as night come tides expand and in the daytime tides contract

Daphnia are freshwater organisms sometimes referred to as “water fleas.” Design an experiment thatcould be used to test the effects of temperature on the size of a daphnia population. In your
experimental design, be sure to:
• state a hypothesis to be tested
• describe how the control group will be treated differently from the experimental group
• identify the independent variable in the experiment
• identify the type of data that will be collected

Answers

An experiment is where scientific data is gathered and analysed to form inferences. Moreover, we can establish a testing ground on the daphnia population, let say by embryology. Hence, we can observe ina controlled manner how temperature influences the growth and formation of offspring by mothers of the daphnia population considering that offspring can contribute to population growth. 

Answer

• state a hypothesis to be tested

Development rate increases faster with temperature that growth rate

• describe how the control group will be treated differently from the experimental group

The control group will be raised at 8 different temperatures to assess their size at maturity, and their asymptotic size.

• identify the independent variable in the experiment

3 clonal lines that differ in asymptotic size and growth rate.

• identify the type of data that will be collected

Measurements of the individual length of Daphnia

Explanation

In this experiment, the temperature-size rile(TSR) was utilized where it will be found that responses on temperature size observed at maturity is different from that manifested at asymptotic size. It will be observed that thermal shift in resources allocation may completely or partly result to a thermal plasticity in maturity size. Moreover, it will be seen that thermal plasticity in asymptotic size is controlled by temperature related challenges.

The action of insulin on sugar levels in the blood helps to

Answers

Insulin is a stimulant and its in the body to help neutralize or diminish amount of sugar in your body
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