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ryzh [129]
3 years ago
9

Which cells are responsible for the movement of photosynthates through a plant?

Biology
1 answer:
jasenka [17]3 years ago
8 0

Answer:

sieve-tube elements, companion cells

Explanation:

Sieve-tube elements and companion cells are responsible for the movement of photosynthes through a plant.

The sieve tube elements are shorter (almost organelle-free) living cells, placed end to end, forming the sieve tubes. Their transverse cell walls are called sieve plaques that make connections between cells and through openings called sieves establish the connection between the cytoplasm of adjacent cells.  Each sieve is coated with calose (glucose polymer), which in winter can completely clog the vessel and then dissolve in spring. When infections occur or the vessel is parasitized, it can also be clogged with callose.

Companion cells are specialized parenchymal cells, which contain all the components that exist in living cells, including the nucleus, are the cells most closely linked to the sieved tube element. The Screened Tube Element and its companion cells are related in development, are derived from the same mother cell, and have several cytoplasmic connections to each other. Due to the many connections, the potential function of the companion cells is to release substances into the sieved tube element and, when the nucleus is absent, to include information molecules, proteins and ATP. When a screened element dies, its companion cells also die, which is a demonstration of this interdependence.

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Answer:

False

Explanation:

The most specific feature of cardiac muscles is the presence of intercalated discs. Intercalated disc connects the ends of cardiac muscle fibers to one another. The discs have desmosomes and gap junctions. The function of desmosomes is to hold the cardiac fibers together. The gap junctions of cardiac fibers allow muscle action potentials to spread from one cardiac muscle fiber to another. These gap junctions have tubular connexons that form channels and connect the cytosol of adjacent cardiocytes to allow the flow of ions and spread of action potential from one cell to another.  

5 0
3 years ago
Sympathetic neurons stimulate vasoconstriction in the gi tract, while sympathetic neurons stimulate vasodilation in arterioles s
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It is because of the different neurotransmitters and their receptors.

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3 years ago
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hence, the correct answer is hypohidrosis.

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In the simulation, the prey type that will avoid capture the most is the beans while the predator that will succeed in capturing the most prey is the spoon.

<h3>What are predator-prey relationships?</h3>

Predator-prey relationships are feeding relationships in which one organism kills and eats another organism for food.

The organism that kills the other is called the predator while the organism that is killed is called the prey.

In the simulation, the prey type that will avoid capture the most is the beans since it had the smallest surface area and size.

The predator that will succeed in capturing the most prey is the spoon because of its hollow nature.

Learn more about predator-prey at: brainly.com/question/1778577

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5 0
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