The sunflower moves to face in the direction of Sun due to the presence of specialized cells. This movement is in response to the electricity. Thus, the correct option is B.
What causes movement of Sunflower?Sunflowers show heliotropic movement. This suggests that there is a learned diurnal rhythm in sunflower due to presence of specialized cells which is followed even in the absence of a strong directional light. Leaves and floral parts of sunflower both exhibit heliotropism. Floral heliotropism is generally controlled by the motor cells which are located just below the flower head.
The movement in sunflower to face the Sun is due to the electricity which is possible due to the movement of ions in the cells. This is called as phototropism.
Therefore, the correct option is B.
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What is the significance of crossing-over during meiosis?
A different combination of genes is provided to each gamete.
A different number of chromosomes are provided to each gamete.
C The number of chromosomes is reduced by half in each gamete.
D The number of genes is increased in each gamete.
Materials move through vascular tissue by a combination of factors, including transpiration and gravity. If non-vascular plants do not have xylem and phloem, which process moves materials throughout the plant?
a. Osmosis and diffusion
b. Transpiration
c. Pollination
d. Evaporation and cyclosis
Answer:
A: Osmosis and diffusion
Explanation:
Answer:
A. Osmosis and diffusion
Explanation:
I took the test and it was correct.
HOMEWORK! What do these mean?
Baned on the graph, which of the following statements best donorbos human population growth?
A
The human population has experienced fluctuating growth since 1300,
B
The human population stabilized around the year 1900,
The human population decreased for 600 years and then increased,
D
The human population increased slowly and then had a very rapid increase,
Answer:
The human population increased slowly and then had a very rapid increase,
Explanation:
The graph shows a slow increase from 1300 until the line suddenly shot up. So it slowly increased that had a "rapid" increase.
What is the benefit of using sunscreen when working outside every day?
Answer:
Not only does it protect from UV rays, it also works to reduce the appearance of pores and fine lines over time, so you're actually improving your skin while wearing it.
Explanation:
Answer:
It prevents cancer.
Explanation:
UV rays penetrate the many layers of the epidermis, reaching the deep layers of our skin, which is meant to be protected. This activates pigment cells, releasing Melanin and darkening the skin.
When the UV rays penetrate these deep cells, it reacts similarly to radiation, denaturing and breaking apart DNA. If enough damage is done and the cell becomes irreparable a tumor forms.
Consistent exposure to UV rays has detrimental effects because it puts your skin cells through this same stress every day.
PLEASE HELP i need to pass bio
Answer:
1. Cell X
2. A increasing water consumption that decreases the flow of clean water from the springs that feed the river
Explanation:
Prokaryotoc cells do not have a nucleus, so the prokaryote is cell X
The other options for question 2 are beneficial to the salamanders
Help please and thank you
Answer:
C
Explanation: nice job
CAN SOMEONE HELPP?????????
Answer:
ok I don't know if my ur office is not good at all but can you tell me these things
a predator population suddenly decreases even though the prey population stays the same. Besides disease, what could explain this change?
Answer:
hunting, the predator is in the middle of the food chain
Explanation:
hunting can WIPE OUT species as shown by the dodo bird in the past.
food chains often work as 1-2-3 or 1-2-3-4 in levels.
A predator population suddenly decreases even though the prey population stays the same. Besides disease, hunting, the predator is in the middle of the food chain.
What happens if in a particular food web a new prey animals are introduced?If in a particular food web a new prey animals are introduced, that will most likely result in the increase of the populations of the predators in that food web. The reason why the populations of the predators would increase is that there will be more pray to hunt, and more food means that the predators can increase in numbers and not suffer from food shortage.
Still, while this the most likely scenario, it has to be taken with a little bit of reserve, as it also depends on what kind of prey animal would be introduced in the food web, and what kind of predators are there in the food web. The predators in that food web are small to medium sized predators like the serval, honey badger, than there will be no increase in the predator populations as they will not be able to hunt the introduced pray animal.
Therefore, A predator population suddenly decreases even though the prey population stays the same. Besides disease, hunting, the predator is in the middle of the food chain.
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PLEASE HELP
Which statement best compares potential and kinetic energy?
Answer:
Kinetic energy increases and potential energy decreases when the velocity increases
Explanation:
Several members of the Fitzsimmons family have polydactyly, and they differ in their numbers of extra fingers and toes. Yet, certain relatives who should have extra digits don't, such as Megan Fitzsimmons. She has two children, a son with two extra fingers and a daughter with an extra toe, and her father has an extra digit on each hand and foot. Polydactyly in this family is Group of answer choices variably expressive and incompletely penetrant. pleiotropic and a phenocopy. invariably expressive and completely penetrant. dominant and recessive.
Answer:
variably expressive and incompletely penetrant
Explanation:
Polydactyly is a genetic disorder characterized by limb malformation (i.e., supernumerary digits). Polydactyly is a genetically complex trait influenced by different factors, including, among others, epigenetic factors, environmental factors, regulatory genomic sequences (enhancers and/or suppressors), etc. The variable expressivity of this trait is caused by the combination of these factors. Incomplete penetrance refers to the fact that the trait is expressed in only some individuals having the genetic predisposition for this condition.
Unlike the cell membrane, the cell wall is a
Answer:
living thing
Explanation:
Pine trees have cones containing exposed seeds and are considered (blank)
Answer:
Pine trees have cones containing exposed seeds and are considered gymnosperm
Explanation:
Which best describes cancer?
1) Cells that divide uncontrollably due to mutation
2) A single cell that happens to be bigger than others
3) Cells that stay in G1
4) A virus that attaches to bacterial cells
Answer:
1
cells that divide uncontrollably due to mutation
State two differences between respiration and breathing
Answer:
1. Respiration results in the production of energy and Breathing doesn’t provide energy.
2. Breathing is a biophysical process that involves the exchange of gases through inhalation and exhalation while respiration is a biochemical process to release energy from organic compounds which are then used for performing different physical activities.
Which of the following equations represents the Pythagorean theorem? Oa2+b?-c2 O a+b=0 O a+b=c O a 2xb2=C2
Answer:
A + B = C
Explanation:
Side A + Side B will equal which ever other side or the hypotenuse
I neeeeed helppp plz
Answer:
amino acids
Explanation:
Answer:
amino acid
Explanation:
Metamorphic rocks are formed by the cooling of magma inside the earth or on the surface ?
Answer:
false, thats igneous rocks
What's the answer please?
If only 10% of the energy gets passed to the next tropic level, what happens to the rest of the energy?A) It is lost as carbon dioxide B) It is lost as heat C) Nothing D) We don't no know
Answer:
A
Explanation:
The rest of the hair is lost as carbon dioxide.
please help i have more than 80 assignments
Relacione três aspetos da atividade vulcânica com os benefícios que, desta atividade, possam resultar para o Homem.
Answer:
Formation of land, atmosphere, water in the ocean and building materials.
Explanation:
Formation of land, atmosphere, water in the ocean and building materials are the three aspects of volcanic activity which brings benefits to human. Volcanic emissions have produced the atmosphere and the gases present in it and the water of the oceans. Volcanoes formed lands due to spreading of molten lava. Volcanic deposits occurs as a result of materials that is emitted from a volcanic eruption which can be used as a building materials.
A student read the following description of San Francisco: has cool summers, warm winters, and not much rain. What information does this description best provide?
A. The general climate of San Francisco during the year.
B. The weather on a specific day.
C. A description on how San Francisco’s climate has changed over 30 years.
D. A forest of what the weather will be tomorrow.
Answer:
A
Explanation:
Answer:
A
Explanation:
it talks about all the seasons
Someone please help me!! I will appreciate it.
Answer:
c) phagocytosis
Explanation:
Answer this question
How are amino acid sequences determined in protein synthesis ?
Answer:
The sequence of amino acids are determined by the genetic code. The triplet of nucleotides in tRNA which are complementary to the base pairing of specific triplet nucleotides (codons) in mRNA during the translation phase of protein synthesis. ... The sequence of bases determines genetic information.
Explanation:
Is the Amazon Rainforest Resilient or Fragile to change and why?
I thought Resilient because the rainforest has changed over time because it was fragile before.
Answer:
Resilient.
Explanation:
Amazon Rainforest is more Resilient to change because Amazon rainforest has evolved over millions of years. Amazon rainforests may be more resilient to climate change induced by carbon dioxide due to storing a lot of carbon as living biomass. The climate change is unable to change the Amazon rainforest due to their dense vegetation but if the rainfall patterns changes means the Amazon rainforest experience less rainfall due to climate change so it has a change this Amazon rainforests.
which occurs during both DNA replication and protein production
A RNA leaves the nucleus
B DNA leaves the nucleus
C RNA unzips
D DNA unzips
Answer:
Option A is your answer ☺️☺️☺️
Answer: A. RNA leaves the Nucleus.
Explanation: During both DNA replication and protein production, RNA leaves the nucleus. DNA does not leave the nucleus during these processes.
When is the possibility of solar weather affecting terrestrial weather the highest?
A. during solar minimum
B. during the solar cycle
C. during solar maximum
D. during Total Solar Irradiance
Solar maximum is the peak when the sun's activity and its effect on terrestrial weather will be maximum. Thus, option C is correct.
What is solar maximum?Solar maximum is referred as the highest activity exhibited by the sun during its solar cycle of eleven years.
Solar maximum is an outcome of sun's magnetic poles that produces greater solar eruptions. The large number of sun spots are found as a result.
These sun spots are rich in energy and thus contributes to greater activity of the sun.
Higher the activity of the sun, higher will be its effect on terrestrial weather as sun is the main source of energy for terrestrial life.
Opposite to solar maximum is solar minimum when the activity of the sun is lowered due to reduced sun spots.
Sun storms are the example of solar maximum.
Thus, solar maximum and solar minimum are the important part of solar cycle.
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The diagram below shows the growth pattern of some cells in the human
body after they have been exposed to ultraviolet radiation.... what are the
cells in area X called?
O Red blood cells
O Cancer cells
O White blood cells
O Sex cells
Answer:
The cells in the area X are Cancer cells due to UV radiation.
examples of sucrose?
Answer:
Table Sugar!
Explanation:
Sucrose, also known as common sugar, is used by humans to sweeten foods. Yummy ice cream, making coffee a little less strong, there are lots of things you can use sugar for! It is composed mainly of glucose and fructose.