True or false: Guard cells close openings in the leaves slowing down water loss.

Answers

Answer 1

Answer:

True

Guard cells close openings in the leaves slowing down water loss.

Answer 2

Answer:

True

Explanation:

Stomata are pores in the leaf that allow gas exchange where water vapor leaves the plant and carbon dioxide enters. Special cells called guard cells control each pore's opening or closing. When stomata are open, transpiration rates increase; when they are closed, transpiration rates decrease. So when it is opened the water vapor depletes quicker but when its closed it slows down the process of depletion.


Related Questions

A certain species of trilobite is known to have lived 300 million years ago. If this index fossil was found in a rock layer containing other fossils, what could you infer about the other fossils
a The rock layer killed the trilobite and the other fossils
b The other fossils are about 300 million years old
c The organisms that formed the other fossils are still living.
d The rock layer formed before the trilobite and other organisms

Answers

Answer:

b The other fossils are about 300 million years old

Explanation:

From the description of the problem given, we can correctly conclude that the other fossils are about 300 million years old and even the rock layers formed around that period in time too.

Fossils are the preserved remains of organisms that has once lived. Through the principle of relative dating we can determine the age of fossils and those of other related ones. According to the principle of fossil and fauna succession, "fossils succeed one another in a predetermined form". So, the fossils occurring together within the rock layers are of the same age.

When the Earth's continental crust and ocean crust formed, they were different densities. Why did they differ in density and how did this affect their formation?

A.) The continental crust was thicker and less dense. It rose above sea level, separating land from water.

B.) The continental crust was thicker and more dense. It sunk below sea level, separating land from water.

C.) The continental crust was thinner and less dense. It rose above sea level, separating land from water.

D.) The continental crust was thinner and more dense. It sunk below sea level, separating land from water.


I think it’s B, but I’m not completely sure. Help please!

Answers

Answer: A.) The continental crust was thicker and less dense. It rose above sea level, separating land from water.

Explanation:

The Ocean crust is made out of rocks like basalt with a thickness of about four miles. The Continental crust on the other hand is made out of granite and other similar minerals and is between six and 47 miles in thickness which makes it thicker than the Oceanic crust.

With basalt being more dense than granite, the Oceanic crust sank and the Continental crust rose thereby separating land from water.

Answer:

Answer: A.) The continental crust was thicker and less dense. It rose above sea level, separating land from water.

Explanation:

Toook the testttt :)))

FLVS??? :)

i need help cant get this one wrong

Answers

Answer:

ik that 1 goes to blue

Explanation:

Does natural selection affect humans? How and why

Answers

Answer:

Yes it does affect humans.

Explanation:

Natural selection acts on the phenotype, but evolution is a change in the frequency of alleles in a population over time, a change in genotype. So natural selection acts on phenotype, but it is the connection to genotype that makes it the mechanism of evolution. Many traits vary among different members of a population of humans and animals, from body size to hair color, and those differences are often linked to differences in genes. Natural selection occurs when some of those traits help some individuals survive and reproduce more than others. In scientific terms, these hazards are referred to as selection pressures. They put pressure on us to adapt in order to survive the environment we are in and reproduce. It is selection pressure that drives natural selection "survival of the fittest" and it is how we evolved into the species we are today.

Which alele combination represents a male who has an X-linked recessive disorder?

Answers

Explanation:

The allele combination would most likely be xx if recessive

What provides evidence of an increase in animal species at the same time that atmospheric oxygen concentrations increased?

ts fossil records but i need an explination

Answers

Answer:

Fossil records provide evidence of an increase in animal species at the same time that atmospheric oxygen levels increased.

Explanation:

A huge diversification among animal species occurred with the increase in the levels of atmospheric oxygen. The reason why the number of species increased drastically was that a whole new world opened up, the land. The land was open for exploitation and taking over, with every single niche free, so animals diversified and filled in pretty much all of the niches. The fossil records give us clues when this happened, as from only microorganisms there is a sharp rise in complex animals, coinciding with the increase of oxygen levels.

If it wasn't for the increase of atmospheric oxygen though this wouldn't have been possible. The oxygen in the atmosphere enabled animals to breathe on land. Also, it cooled off the global temperatures which were too high before the increase of atmospheric oxygen, making them suitable for life. And last but not least, the atmospheric oxygen resulted in the formation of the ozone layer, a layer that started to act as protection from the UV rays.

Answer:fossil record

Explanation:

Which two animals are able to generate internal heat to maintain their body temperature in a coid environment

Answers

Parrots and Dogs are able to generate internal heat to maintain their body temperature in a coid environment. Parrots and Dogs are Endotherms. They generate most of the heat they need internally, when it's cold outside.

what will you do if you find out that your house is located near an active fault?​

Answers

Answer:

b

Explanation:

Help with number 3 !!!

Answers

All of the above factors effect climate

A form of arthritis is a common complication of dysentery.

True
False

Answers

Answer:

false

Explanation:

What structures are responsible for the movement of chromosomes to the center of the cell in metaphase and their separation in anaphase?

Answers

The structures that are responsible for the movement of chromosomes to the center of the cell in metaphase is the spindle fibers, the cell attaches the centromeres to the spindle fibers to pull the sister chromatids to the center

In anaphase the sister chromatids are separated at the centromere and are pulled to the opposite poles of the cell by the spindle fibers

what are 2 stages of photosynthesis, and where does it take place?

Answers

photosynthesis takes place in the roots of the plant

5. By about how much did average global temperatures increase from 1880 to
2020?*

Answers

2 degrees Fahrenheit and ~ 1 degree Celsius

Hybridization______.

Answers

Answer:

i guess it would be C but I'm not sure bout that

outline how enzymes can be manufactured for use in biological washing powders

Answers

Answer:

Washing powder protease and protein

Explanation:

1 Invasive plant species affect the interactions of living and nonliving components
of an ecosystem, so the removal of invasive plants is often necessary. The goal of
most plant-control methods is to disrupt or inhibit the function of different plant
systems. For example, insects can be used to chew through roots in order to
reduce a plant's ability to absorb water.
Which of these functions would be most immediately affected by a reduction in water
uptake by roots?
A Disease resistance
B Seed dispersal
C Sunlight absorption
D Photosynthesis

Answers

Answer: photosynthesis

Explanation:

Answer:

D. Photosynthesis

Explanation:

I got it "Correct"

3. Assertion (A):- Plasma membrane is a selectively permeable membrane.
Reason(R):- Plasma membrane allows entry and exit of substances from cell through the process of diffusion.
a. Both A and Rare true and Ris correct explanation of the A
b. Both A and Rare true but Ris not the correct explanation of the A
C. A is true but Ris false
d. Both A and Rare false
4. Plasmodium is an example of Bacteria​

Answers

Answer:

the answer is option B. both A and R are true but R is not the correct explanation of A


Which hypothesis helps to explain why all organisms share the same genetic code?

Answers

RNA , RNA molecules may have been able to self-replicate without the help of other molecules. If early RNA molecules were able to copy themselves to build new RNA molecules, this helps to explain why all organisms share the same genetic code.

the correct sequence in the expression of a trait

Answers

Answer:

The amino acid sequence is present in proteins and proteins are responsible for providing character.

Explanation:

Thus, the correct sequence in the expression of a trait gene protein trait.

1) Eubacteria cells lack a nucleus, and are therefore________

Viewing eubacteria requires a microscope,because they all single celled organisms.another word for single celled is_______

Answers

Answer:

The correct answer is - prokaryotic and unicellular.

Explanation:

Eubacteria is known as the true bacteria and belongs to the prokaryotic type of cells which is characterized by no double-membrane organelles or the nucleus. All the genetic material is present in the cytoplasm itself.

These bacteria are single-cell microscopic organisms as they are very minute to see by the naked eyes and required a microscope to study. Another word for the single-cell organisms is unicellular.

The picture shows an organism that lives in the lakes of two caves in
Augusta County, Virginia. Its primary food source appears to be fine bits of
organic matter that drift into the cave lakes. This cave-dwelling species
belongs to the kingdom -

A,Animalia

B,Protista

C,Eubacteria

D,Fungi

Answers

Answer:

the answer is a.animalia

The image below depicts a bowling ball traveling down the lane and striking pins, knocking them down. Identify at least two forces acting on the bowling ball.


1. gravity

2. friction

3. air resistance
(also called ‘drag’)

4. density




Answers

Friction and air resistance

help plzzzzzzzzzzzzzzzzzzzzzz

Answers

The third answer down.

Answer:

C

Explanation:

hope this helps :)

(DONT MIND THE FACES I PUT) Which of the following is an example of maintaining homeostasis?


A. Learning :I

B. Sweating :o

C. Playing :)

D. frowning :(

Answers

Learning so a I hope it’s right

Answer:

sweating

Explanation:

The body maintains homeostasis by eliminating these substances through the urinary and digestive systems. An individual simply urinates and defecates the toxins and other nasty things from the blood, restoring homeostasis to the human body.

tRNA is the molecule that brings the appropriate _______ _______ to the mRNA using an anticodon.
fill in the blank

Answers

I think the answer is cytoplasm :))

What do checkpoints do in the cell cycle? *

Answers

Answer:A checkpoint is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division.

Explanation: Easy Peasy

What are some "topics" to be considered when discussing the California Current
Ecosystem

Answers

Answer: Red tide events

Explanation:

Red tide events causing massive fish die-offs, unprecedented sea ice loss, erosion of coastal wetlands, and bleaching of coral reefs not only impact marine ecosystems but also communities, peoples' well-being, local businesses, and more.

These issues impacting ecosystems and people require solutions that consider ecosystems and people. These types of solutions are Ecosystem-Based Management, which considers social, economic, and ecological trade-offs when deciding how to address these issues.

Please help
Predict how the inability of a species to adapt within a changing environment may contribute to the extinction of that species.

Answers

It should be a in my opinion

Answer:

B

Explanation:

Why is the Krebs cycle so important in metabolism?

Answers

Answer:

I’m not sure but its because it’s mister crabsssss hayayhaha

Explanation:

Jkjk anyways it’s important in the metabolism because it’s the MAIN source of energy for the cells and it’s also important in the aerobic respiration,

Because the Krebs cycle is the main source of energy for our cells and it is also an important part of aerobic respiration.

Which of the five stages of respiration takes place at the alveoli?

Answers

Answer:

External respiration is the exchange of gases with the external environment, and occurs in the alveoli of the lungs.

The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. External Respiration. Exchange of gases between air and blood at pulmonary capillaries (Alveoli) is the second stage. So it would be the 2nd stage
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