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3 years ago

What structures form cytoplasmic channels that connect adjacent plant cells through the cell walls?

Biology

1 answer:

Len [333]3 years ago

3 0

<h3><u>Answer;</u></h3>

Plasmodesmota

<h3><u>Explanation</u>;</h3>

Plasmodesmata type of cell junction in plant cells that are cytoplasmic channels that perforate cell walls to connect adjacent cells.
The cytoplasm of one plant cell is continuous with the cytoplasm of its neighbors via plasmodesmata. Unify most of the plant into one living continuum.
The plasma membrane of adjacent cells line the channels of the plasmodesmata and thus are continuous, letting water and small solutes pass freely from cell to cell, and sometimes certain proteins and RNA.

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Read each description below regarding innervation of the ANS. Then click and drag each into the appropriate category base on whe

Anna35 [415]

The question is incomplete. Here is the complete question.

Read each description below regarding the dual innervation of the ANS. Then click and drag each into the appropriate category base on whether it is an example of antagonic or cooperative innervation.

The sympathetic division stimulates mucus production by salivary glands while the parasympathetic division stimulates enzyme secretion.

The sympathetic division stimulates am increase in heart rate while the parasympathetic division stimulates a decrease in heart rate.

During sex, the parasympathetic division stimulates arousal while the sympathetic division stimulates orgasm.

The parasympathetic division constricts the pupils while the sympathetic division dilates the pupils.

Antagonistic:

Cooperative:

Answer: <u>Antagonistic:</u> The sympathetic division stimulates am increase in heart rate while the parasympathetic division stimulates a decrease in heart rate; The parasympathetic division constricts the pupils while the sympathetic division dilates the pupils.

<u>Cooperative:</u> The sympathetic division stimulates mucus production by salivary glands while the parasympathetic division stimulates enzyme secretion.; During sex, the parasympathetic division stimulates arousal while the sympathetic division stimulates orgasm.

Explanation: The peripheral nervous system is divided in <u>Somatic Nervous System (SNS)</u> and <u>Autonomic Nervous System (ANS)</u>. The first is responsible for sensory input and voluntary motion.

Autonomic Nervous System is divided into <u>Sympathetic and Parasympathetic divisions</u> and is controls the fight-or-flight and rest-and-digest situations. Usually, an organ with sympathetic and parasympathetic innervations have antagonic function, such as the heart rate - one system causes the heart rate to increase while the other stimulates the rate to decrease. However there are cases in which the combination of the 2 systems cause an increase of stimulation, producing similar effects.

Analysing each category above, it is deductable that when the sympathetic stimulates mucus production and parasympathetic, enzyme secretion and when the parasympathetic stimulates arousal and sympathetic, orgasm, in both cases, they have cooperative innervation.

On the other hand, when sympathetic stimulates increase in heart rate and parasympathetic, decrease in the rate, as stated before, and one stimulates constriction of the pupils and the other, dilation of the them, those are examples of having antagonic innervation.

5 0

3 years ago

⦁ In what stage of an animal’s life cycle do most cells differentiate?

Ber [7]

Answer:

Reproduction

Explanation:

4 0

2 years ago

Read 2 more answers

6. What are proglottids? What is the scolex?

Nataliya [291]

Explanation:

Proglottids are segments in cestodes that contain bot the male and female reproductive organs. These segments go ahead to make eggs and then dettach form the worm. They are excreted and become agents of infection on the next hoist. Proglittids formed near the neck of the worm are immature while those at the tail end are literally bags of mature eggs.

The scolex is the head of the worm that is attached to the host. It is also the part that ‘sucks’ nutrients from the host. It has hooks that it uses to anchor itself in the host. In some species, rather than hooks, there are suction-cups that use suction for anchorage.

Learn More:

For more on cestodes check out;

brainly.com/question/14565928

#LearnWithBrainly

8 0

3 years ago

"We are very familiar with two things found in large woody plants, wood and bark. The wood is essentially made of ________ and t

valina [46]

<h2>Xylem;phloem and cork</h2>

Explanation:

Wood is mainly known as secondary xylem found in trees

Xylem is basically the vascular tissue which is responsible for the conduction of water and nutrients from the roots to shoots and leaves
Secondary xylem is formed from secondary growth and is associated with lateral growth and grows from the vascular cambium
Its cell walls are thickened by deposition of lignin which provides mechanical support to plants and consists of tracheids and vessels that are shorter and wider
In large woody plants secondary xylem get differentiated into heartwood and sapwood

Bark is essentially made of phloem and cork

Bark sole purpose is to provide protection to trees
The inner bark is produced by vascular cambium which consists of secondary phloem whose innermost layer transports food from the leaves to rest of the plant
The outer bark is a dead tissue which is the product of cork cambium

8 0

3 years ago

Why a genetic bottleneck can be an important evolutionary factor for a species

melisa1 [442]

Answer:

Genetic drift decreases genetic diversity within a population.

Explanation:

Genetic drift decreases genetic diversity within a population. It is a change in allele frequencies due entirely to random chance and is more likely to affect smaller populations than large ones. Population bottlenecks can lead to genetic drift.

6 0

3 years ago