Answer:Essay on Hydrophyte | Plants
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The below mentioned article provides an essay on hydrophyte.
Hydrophyte embraces all the different and varying plant forms that adapted to live under direct influence of free water or in waterlogged soil, e.g. a small number of ferns and angiosperm. Gymnosperms have not migrated into aquatic habitats.
Hydrophytes, also called hydrophytic plants, are classified according to forms:
Submergent, Floating and Emergent. Submergent hydrophytes grow and remain entirely submerged below the surface of water throughout life. Floating hydrophytes have leaves or shoots that float on top of water surface. Emergent hydrophytes have roots anchored to hydric soil, but a portion of shoot lies above water surface.
The different form of hydrophyte exhibits the following characteristics that help them to survive in water and waterlogged soil:
i. Increase in leaf surface that helps plants for floatation.
ii. The presence of air chambers that assist in buoyancy of the plant.
iii. Stomata, if present, nonfunctional because the plants need not regulate transpiration due to abundance of water in their environment.
iv. Reduction of xylem because the hydrophytes need not conserve water.
v. Reduction in mechanical and protective tissue as water pressure supports them.
vi. Hydrophytes have thin cuticle or lack it. Because the functions of cuticle like protection from strong sunlight, conservation of water and deterrence of insects are not required by hydrophytes. They are protected from excess sunlight by surrounding water; no question arises for water conservation as they have abundant free water in their environment; the hydrophytic angiosperms suffer little predation by aquatic animals.
Due to the thinness of cuticle the leaves absorb nutrients from the water directly. But the major bulk of minerals are absorbed by roots and transported to the leaves. As there is no transpiration pull like land plants the transportation of minerals occur through root pressure. Hydathodes are very common in the leaf tips of many submerged hydrophytes. Transportation of water occurs as a bleeding stream ending in hydathodes. The opening of hydathodes may be large.
vii. Stomata when present may be many in number and occur on upper surface of floating leaves (epistomatous).
viii. Roots are small and reduced in all respects as water can diffuse directly into leaves.
ix. Formation of special roots and these are negatively geotropic and designed to function in gas exchange. Such roots are termed as pneumatophore and present in halophytes.
x. Hydric soils have diluted oxygen and minerals and the hydrophytes adapted to absorb nutrients directly from water.
xi. The piliferous layer scarcely has (or no) root hairs. Root hairs are entirely absent from Ceratophyllum.
xii. The piliferous layer is not cutinized/suberized and so absorptive in function. Moreover the turgid piliferous zone provides mechanical strength, as mechanical cells are absent in hydrophytic roots.
xiii. The cortex of root is wide and provided with air cavities.
xiv. Xylem of root and stem is poorly developed and has thin walls. Vessels are absent in many hydrophytes. In the root of Potamogeton (Fig. 29.9A) the vascular tract in the centre is occupied by a large xylem cavity. The reduction in xylem is due to the fact that in hydrophytes no elaborate system of water absorption is required as all the epidermises of plant body are capable of water and mineral absorption.
xv. The stem of submerged hydrophytes is very weak and flexible. It moves according to the direction of flow of water currents.
xvi. The epidermis in the stem of submerged hydrophytes is uniseriate. It is not cuticularized and in some cases the cells have cellulose walls only. As a result the epidermal cells can absorb mineral salts and gases dissolved in water directly.
xvii. The cortex is wide and has large air chambers. The air chambers may be arranged symmetrically e.g. Myriophyllum (Fig. 29.9B) or scattered irregularly all over the cortex, e.g. Elodea, Hydrilla, Hippuris etc.
xviii. The cells of cortex have low osmotic pressure. The cells contain chloroplastids that help in photosynthesis.
xix. The vascular tissues in stem of submerged hydrophytes are not well developed. Endodermis and pericycle are indistinct. The vascular tissues are mostly composed of phloem.
Hydrophyte
xx. Though the endodermis is not distinct many hydrophytic angiosperms have the innermost layer of cortex that functions as endodermis. This endodermoid layer is present in submerged roots, stems and leaves. It is assumed that this layer is involved in channelizing the flow of water through reduced xylem.
Explanation:
Hydrophytes are aquatic plants that are especially suited for living in aquatic environments.
What are hydrophytes?In order to survive, a hydrophyte, also known as an aquatic macrophyte, must either be completely submerged in water, or in some cases be allowed to float on the surface of the water.
Aquatic plants can usually be categorized into 4 main type: floating plants, deep water plants, marginal plants and oxygenating plants. For a more in-depth description of the various types, please see our page on plants for ponds.
The pericycle is a cylinder of parenchyma or sclerenchyma cells that lies just inside the endodermis and is the outer most part of the stele of plants.
Therefore, Hydrophytes are aquatic plants that are especially suited for living in aquatic environments.
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Do you agree that wild species such as orangutans have the right to exist whether or not they are useful to humans? Explain.
Answer:
Because orangutans live in only a few places, and because they are so dependent upon trees, they are particularly susceptible to logging in these areas. Unfortunately, deforestation and other human activities, such as hunting, have placed the orangutan in danger of extinction.
Explanation:
Hope this helps ;)
Ape like organisms with red coloured hairs that are mammals and belong to the Hominidae family are called Orangutans. They are found in the rainforests and are 1.2 - 1.8 m in height.
To this open question, I don't agree with the statement.
The viewpoint can be explained as:
They have the right to exist even when they are not useful to humans as they play a vital role in the food chain and the ecosystem in which they reside.If Orangutans are withdrawn from the ecosystem then many plant species will be impacted or can vanish.Orangutan helps in seed dispersion and sustain a healthy and balanced condition of the ecosystem.The residents, trees and the ecosystem are interdependent for survival and hence, they cannot be removed.To learn more about Orangutans follow the link:
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Which of the following professionals is best suited to help balance the operations of CAFOs and animal welfare concerns?
a veterinarian
an animal scientist
a small-scale farmer
an animal welfare educator
Answer:
A veterinarian.
Explanation:
Hope this helped!
Answer:
A Veterinarian
Explanation:
this seems like the answer to me.
Which action would cause global temperatures to decrease?
Answer:- planting trees
- solar, nuclear, and geothermal
(sorry if im wrong)
:(
Match the types of roots to their properties. a root that is conical in shape and develops from the radicle a root that develops like a tuft of hair like roots and is short-lived a root that grows from plant parts other than roots a root that grows from branches to the ground a root that grow out of the soil adventitious root arrowRight pneumatophores arrowRight tap root arrowRight fibrous root arrowRight prop root arrowRight
Answer:
adventitious root ➡ a root that grows from plant parts other than roots
pneumatophores ➡ a root that grow out of the soil
tap root ➡ a root that is conical in shape and develops from the radicle.
fibrous root ➡ a root that develops like a tuft of hair like roots and is short-lived.
prop root ➡ a root that grows from branches to the ground
Explanation:
Adventitious roots are known to be roots that grow from a tree organ other than the root. The growth can be from the stem or leaf of that tree. This root makes it possible for vegetative propagation of plants to take place through stem or leaf cuttings. It can seen on rhizomes, corms, and tubers.
Pneumatophores are roots that grow out of the soil. They grow in saline mud and grow upward out of the mud and water. These type of root system are found in mangrove species. A tap root system is formed when the radical keeps growing and some other roots form along the tap root. They are conical in shape too.
please answer quick and honestly, will choose brainliest. 16 points
How can you use isobars to determine approximate wind speed and direction using the pressure map?
Answer:
Since variations in air pressure drive the winds on Earth, isobars also give meteorologists an easy way to assess wind direction and speed. Closely spaced isobars indicate large pressure changes over a small area, causing wind speeds to increase.
Hope this helped! :}
In a certain breed of cats, having black hair is the result of two dominant alleles for hair color (HH). The heterozygous genotype (Hh) produces a cat that has black and white spots. Having two recessive (hh) genes results in a white-haired cat. The Punnett square below shows the results of a cross between which two cats? H H HHHHH hHhHh OA. two spotted cats OB. a spotted cat and a white cat OC. two black cats OD a black cat and a spotted cat
Answer:
a black cat and a spotted cat
Explanation:
I need help it’s from pivot ignore the answer choice that I put
On top of 80 is 100 btw
Answer:
the 3 one okay imma say things bc um it does let me post it
Help with this please
Which of the following is a peptide bond?
A.C-H bond
B.N-H bond
C.C-C bond
D.C-N bond
Answer:
The correct answer is - D.C-N bond
Explanation:
A chemical bond is formed between the carboxyl group of an amino acid to the amino group of the other amino acid and release a water molecule. It is a dehydration synthesis reaction.
So, the peptide bond normally formed by the reaction between amino acid from C1 of one amino acid molecule and N2 of the other amino acid molecule.
So the peptide bond that formed by this reaction is involve bonding of C-N bond.
Number of Differences Pair of Species 2 Porpoise and S. Whale 3 Deer and Giraffe 3 Porpoise and Rt. Whale 3 Hippo and Porpoise 3 Hippo and S. Whale 3 Cow and Giraffe 3 S. Whale and Rt. Whale 4 Hippo and Rt. Whale 4 Deer and Cow Please answer the following questions in complete sentences. 2. Which 4 species are found in all possible combinations with each other
Answer:
The correct answer is - Porpoise, Sperm, Whale, Rt. Whale, and Hippo.
Explanation:
In the question the following combinations are given of the various species with only 2-4 differences in their DNA:
2 Porpoise - Sperm Whale
3 Sperm Whale - Rt. Whale
3 Porpoise - Rt. Whale
3 Hippo - Sperm Whale
3 Hippo - Porpoise
3 Cow - Giraffe
3 Deer - Giraffe
4 Hippo - Rt. Whale
4 Deer - Cow
Here numbers represent the differences in their DNA and on the basis of this combination we can say that Porpoise, Sperm, Whale, Rt. Whale, and Hippo found in all possible combinations with one another. It also tells that all these species diverged from the common ancestor.
what does it mean when you dream about yourself dying?
Explanation:
Dreams of experiencing your own death usually means that big changes are ahead for you. You are moving on to new beginnings and leaving the past behind.
Answer:
it means your life is very long.
Explanation:
connections between plant cells which allow the cytosol to pass through them.
Can someone please help me out I’ll give the brainliest!!
Answer:
its Bo
Explanation:
but it is possible to have both
Answer:
BO
explanation:
It all depends on the mothers type but its most possible that its BO
What is the difference between a tortoise and a turtle
Turtles can be aquatic, semi-aquatic, or mostly terrestrial. Tortoises are turtles that live on land and aren't equipped for water.
(hope this helps ^^)
Answer:
a tortoise is a land dwelling animal and can't not swim way to heavy and a turtle is made for water built to move through water and not as capable of being on land like a tortoise
Explanation:
How could you decrease the amount of energy an object has?
The amount of energy that an object has can be decreased by decreasing its temperature.
Let us recall that the temperature of a body is a measure of the average kinetic energy of the molecules of the body. The molecules in a body are always in constant random motion.
The kinetic energy possessed by the body is dependent on its temperature. To control the amount of energy that an object has, we either increase or decrease its temperature.
If we want the amount of energy that an object has to decrease, we simply decrease its temperature.
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An organism has 18 chromosomes in its body cell. It’s sec cells have 9 chromosomes
Answer:
Its sex cells are haploid and a result of meiosis.
Explanation:
your welcome
Complete a Punnett square for the cross-pollination of a blue flower (RR) and a green flower (Rr).
Answer:
2:2 ratio of inherited genes
Explanation:
There are two RR offspring that will be blue.
There are two offspring with Rr that will also be blue.
R is a dominate trait. With the presence of it in the genes, it will always be expressed over the recessive r trait.
There are three alleles for the ABO blood group in humans. Why are there only two alleles normally present in any individual?
1. The alleles for the ABO blood group always segregate independently during meiosis.
2. Each parent contributes only one allele for the ABO blood group to the offspring
3. Every gene for the ABO blood group must be recessive.
4. The alleles that determine the ABO blood group are on the X-chromosome.
Answer:
2. Each parent contributes only one allele for the ABO blood group to the offspring
Explanation:
Humans are diploid organisms, which means that our cells have two copies of the same gene. These copies are called alleles. We inherit one allele from each parent.
Just like most of our traits, we inherit our blood group from our parents. There are three alleles that determine our blood group: A, B, and O. We can get only two of them, though. Whether our blood group is A, B, AB, or O will depend on the combination of the alleles we inherited.
which best describes organs in an organ system
Answer:
Explanation:
An organ is a group of different tissues that work together to do a particular job. Organs are grouped together into organ systems. Examples of organ systems include the circulatory system and the digestive system. The human body is made up of many cells, so it is an example of a multicellular organism.
What are the different methods used to separate the components of a
mixture at your home? Write with an example for each.
Answer:
1. Mixtures can be separated using a variety of techniques.
2. Chromatography involves solvent separation on a solid medium.
3. Distillation takes advantage of differences in boiling points.
4. Evaporation removes a liquid from a solution to leave a solid material.
5. Filtration separates solids of different sizes.
Explanation:
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Sebastian has two beakers. The first beaker has 100 mL of water and a second beaker has 500 mL of water. In order to identity common physical properties between both substances, he heats both substances to 100°C Sebastian notices that both
substances begin to bubble What physical property does this experiment provide evidence for?
A: This experiment provides evidence of a change in the volume of the samples
B: This experiment provides evidence that the volume remains constant in the samples.
C: This experiment provides evidence that the boling point does change based on sample size
D: This experiment provides evidence that the boiling point is a property independent of the amount of water
Answer:
The 2 beakers of water will have different boiling points because the boiling point of water is a physical property and the property is independent of the amount of water.
Explanation:
Got 100 on my test
Which of the following circumstances is responsible for generating particulate matter?
airborne, odor-causing pathogens
gases escaping from manure piles
combustion of manure piles in hot weather
evaporation from contaminated groundwater
Answer:
combustion of manure piles in hot weather
Explanation:
A manure piles are heap of animal waste or excreta mainly the waste from horse manure and the bedding which is stored to decompose and reduce in bulk.
Particulate matter is a mixture of small particles as well as liquid droplets that causes pollution and is harmful to health.
Burning of manure piles can cause to fly the dust and the dirt in the animal manure in the air and it leads to particulate matter suspended in the air.
A student is asked to design an investigation which will cause an object to have motion that matches the graph she was given.
Which of the following investigations would yield results which match the graph? (DOK 3, AKS 8a)
O A The student will push a ball up a ramp and allow it to roll back down.
OB. The student will push a ball on a smooth, flat surface and then on a rough surface.
OC. The student will push a ball on a smooth, flat surface, it rolls at a constant speed for a short time and then down a rough hill.
D. The student will release a ball down a smooth hill, it rolls at a constant speed for a short time, and then rolls onto a rough surface.
The answer is A. The answer's A because the ball is still in motion.
ICD-10-CM code M19.14 Post-traumatic osteoarthritis, hand contains an Excludes2 note for post-traumatic osteoarthritis of first carpometacarpal joint (M18.2-, M18.3-). The Excludes2 note means that __________.
Answer and Explanation:
It means that there is a disease that was not included in the diagnosis, that is, it was not mentioned, but presents itself in the patient and is part of the represented code. This means that the patient can have both diseases at the same time and that more tests should be done to confirm that this is really happening.
Which lettered location has the highest elevation?
1 A
2 B
3 С
4 D
Answer:
A
Explanation:
Bc it is the highest point in choices
How does binding of complement-opsonized microbes to CR1 facilitate clearing of the microbe from the host? a. Secretion of proinflammatory cytokines b. All of the answers occur as a result of CR1 binding of complement-opsonized microbes. c. Promotion of phagocytosis of opsonized microbes by leukocytes d. None of the answers occur. e. Mediating phagocytosis of C3b-opsonized pathogen by B cells
Answer:
The correct answer is - b. All of the answers occur as a result of CR1 binding of complement-opsonized microbes.
Explanation:
Binding of complement - opsonized to CR1 makes the microbe palatable to the phagocyte for the phagocytosis and removes the microbe from the host cell. The mechanism of the removal takes place by the promotion of phagocytosis by the leukocytes.
Secretion of the pro-inflammatory cytokines also takes place in the clearing of the microbe and the phagocytosis is mediated by the B cells of the C3b-opsonized pathogen.
1. Which of the following is not a way that minerals can form?
1.From magma
2.From processes in the atmosphere
3.From other minerals
4.Organically
Place the Polymerase Chain Reaction events listed below in the order in which they occur. - Double-stranded DNA is produced - DNA sample is heated - Test tube with DNA sample is placed in machine - Taq polymerase initiates DNA synthesis - DNA denatures
Answer:
1- Test tube with DNA sample is placed in machine
2- DNA sample is heated
3- DNA denatures
4- Taq polymerase initiates DNA synthesis
5- Double-stranded DNA is produced
Explanation:
The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology laboratories in order to produce many copies of a specific DNA sample. Thermocyclers are machines designed for a cyclic temperature change of the PCR. First, an initial denaturation step where DNA sample is heated to separate the double-stranded DNA into two single strands. Subsequently, 20-40 PCR cycles are repeated to produce millions of copies of a specific DNA sequence. There are three steps in each PCR cycle: 1-Denaturation to 94–98 °C (DNA strands are separated), 2-Annealing to 50–67 °C (primers bind to each DNA strand on the opposite ends of the DNA strands to be copied) and 3-Extension to 75–80 °C (Taq polymerase initiates the synthesis of complementary DNA strands).
In pea plants the allele for tall plants in dominant to the allele for short plants, and the allele for purple flower colour is dominant to the allele for white flower colour. What is the genotype of a short plant produced from a cross between a true-breeding purple flowered pea plant and a true-breeding white flowered pea plant? *
1.TTPP
2.ttpp
3.ttPP
4.ttPp
5.TtPp
Answer:
The correct answer is - 4. ttPp
Explanation:
Given - tall is dominant over short pea plant
let assume T is dominant and t is short which is recessive
Similarly, P for dominant purple flower and p for white flower
The offspring has a short plant which means it has both t allele or recessive allele for the height of a plant by the cross of a true-breeding purple and true-breeding white:
P P
p Pp Pp
p Pp Pp
This means the offspring would have a heterozygous case for the genotype of the flower of the pea plant
Thus, the correct answer is ttPp
7. How Is melosis different from mltosis?
O Melosis begins with only one cell.
O Melosis Is a cycle of cell dlvision.
O Melosis produces four new cells.
O Melosis is a form of cell reprodu
Answer: C. Meiosis produces four new cells.
Explanation:
Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
Applying Osmosis
On the inside of a cell, it is 75% water and 25% salt. On the outside of the cell it is 60% water, 40% salt.
A. Will water move into or out of the cell?
B. Will the cell shrink or will it swell?
C. Is the solution outside of the cell hypertonic or hypotonic?
Please help me with this! I will mark the right answer brainliest!
Answer:
a. Water will move out of the cell
b. Shrink
c. Hypertonic solution
Explanation:
a. The scenario given shows that there is greater concentration of solutes outside the cell than the concentration of solutes inside the cell because there is 75% water inside the cell and 60% water outside the cell. So by osmotic pressure, water moves out of the cell.
b. Once the cell loses water it would shrink
c. It is an hypertonic solution because the concentration of solutes outside the cell is greater than the concentration of solutes inside the cell.