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Rama09 [41]
3 years ago
3

Propose an explanation for why desert plants might be especially dependent upon aba

Biology
1 answer:
rodikova [14]3 years ago
8 0
<h2>ABA </h2>

Explanation:

  • ABA stands for Abscisic Acid
  • ABA is often referred to as a inhibitory rather than stimulatory hormone
  • It is involved in various functions like the closure of stomata, bud and seed dormancy and is known to inhibit other hormonal actions
  • It is found in leaves ( where it is partially synthesized), stems, and green fruits and its biosynthesis is related to the process of cartenoid production
  • It is generally associated with negative-feedback interactions or stress-related environmental signals such as drought, freezing temperatures and environmental pollutants
  • In deserts, there is scarcity of water and most of the time there are conditions of drought
  • Large amounts of abscisic acid in the leaves causes the stomata to close which helps the plant conserve water during droughts
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During what phase of meiosis does sister chromatids align at the equator?
Alla [95]

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3 years ago
What is substrate level phosphorylation? Where does it occur and what is substrate in it
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Answer:

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5 0
3 years ago
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Place the following statements in order showing the sea floor spreading process.
Alex Ar [27]

Answer:

1- Two tectonic plates separate as they are pulled apart by convection in the mantle.

2- Molten material from the mantle rises up towards the surface due to convection and fills in the rift.

3- New oceanic crust is formed.

4- The crust slowly moves away from the ridge equally on either side.

5- Overtime, the creation of oceanic crust will cause continents to move.

Explanation:

Oceanic plates get separated and the spaces left among them are filled with magma coming from the mantle. When the magma reaches the surface, it suffers physical and chemical changes at the moment it gets in touch with the cold ocean water. The magma temperature descends and turns into a new oceanic crust.  Plates keep separating from each other, and the new oceanic crust moves forward each side of the crest making a place for the ascension of new fluid hot material from the mantle. This constant process is what makes the continents eventually get separated each time  more.

8 0
3 years ago
A nerve signal is also called a/n _______.
Zinaida [17]

Answer:

pulse

axon

action potential

frontal lobe

hypothalamus

occipital

dopamine

Before receiving a nerve impulse, a neuron is at its resting potential, with more negative charges inside the cell than on the outside of the cell. When the neuron receives the nerve impulse, it is depolarized, allowing positive ions to flow across the cell membrane into the neuron. This is called an action potential, and the action potential travels the length of the neuron, taking advantage of the myelin sheath on many neurons. Once the signal has traveled through the neuron, the sodium-potassium pump repolarizes the cell, restoring the resting potential of the neuron.

Explanation:

4 0
4 years ago
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