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Answer:

false

Explanation:

Answer:

Because ferns and fern allies posses true vascular tissues, they can grow to be much larger and thicker than the bryophytes.

Bryophytes mark the transition to land and the origin of vascular plants, and hence, link the seed and vascular plants to their algal ancestors.

Evolutionary trends, whether macro evolutionary events across higher taxa and large spans of geologic time, or more circumscribed events within smaller clades, have long played a prominent role in evolutionary theory.

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Answer:

Terminal moraines are found at the terminus or the furthest (end) point reached by a glacier. Lateral moraines are found deposited along the sides of the glacier. Medial moraines are found at the junction between two glaciers.

Answer:

Molecular Structure and Polarity. The distinctions between the chlorophylls, which are more polar than β-carotene are slight: chlorophyll a has a methyl group (Y=CH3) in a position where chlorophyll b has an aldehyde (Y=CHO). This makes chlorophyll B slightly more polar than chlorophyll A.

Explanation:

because vaccine injected to them produces antibodies which fight against the bacteria

The percentage of moths in the natural population that was white in 1962 is : 4%

Hardy-weinberg equilibrium states that the sum total of all the genes of an individual in a population is constant when the disturbing factors such as genetic drift does not occur

p² + q² + 2pq = 1

Applying the equation below

p² + q² + 2pq = 1

p = frequency of dominant allele

q = frequency of recessive allele

q² = frequency of h0m0zygous recessive genotype

p² = frequency of h0m0zygous dominant genotype

From the graph

Frequency of G allele ( i.e p ) = 0.8

percentage of white moths = q²

Note : p + q = 1  ---- ( 1 )

Insert value into equation ( 1 )

0.8 + q = 1

therefore ; q = 0.2

Hence the percentage of white moths = ( 0.2 )² = 0.04

                                                                               = 4%

Hence we can conclude that The percentage of moths in the natural population that was white in 1962 is : 4%

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Answer:

40

Explanation:

40 chromosomes would be found in the sperm produced by heat same squirrel

40 chromosomes would be found in the sperm produced by heat same squirrel.

A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. The very long, thin DNA fibres in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.

The highest possible level of DNA and protein organisation is seen in chromosomes. Chromosomes' primary job is to carry DNA and pass genetic material from one generation to the next. Cell division involves the critical function of chromosomes. They guard against tangles and damage to the DNA.

For above given example, if 20 chromosomes are present in skin cells, then the squirrel will have 40 chromosomes in the sperm cells.

Thus, 40 chromosomes would be found in the sperm produced by heat same squirrel.

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Viruses differ from other pathogens because they are considered non-living.

Viruses are organisms that are incapable of reproducing on their own without a living host.

Viruses cannot undergo any of the characteristics of life outside a living host.

They, therefore, infect their host and use the mechanisms of the host to replicate themselves.

Therefore, viruses differ from other pathogens because they are considered non-living.

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Answer: Nucleus membrane isn't part of the ER or Golgi Apparatus, BUT all of them are part of the endomembrane system.

Endoplasmic reticulum and Golgi apparatus are two membrane-bound organelles found in eukaryotes. Both these organelles are closely associated and functionally related. Both endoplasmic reticulum (ER) and Golgi apparatus are two components of the endomembrane system of a cell. Lysosomes and vesicals are the other components of the endomembrane system.

Cavendish banana crop be destroyed some day due to Panama disease.

The Cavendish banana is considered as the most popular banana worldwide but it could disappear in the coming years because of the attack of an aggressive fungus called "Panama Disease."

This disease destroy the banana plant at faster rate which leads to its destruction so we can conclude that Cavendish banana crop be destroyed some day due to Panama disease.

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Answer:

Ecosystems are made up of all the different living organisms as well as the abiotic elements that affect them. In ecology, the difference between community and ecosystem is that the community refers only to living organisms inside an ecosystem.

Explanation:

None of the interest groups mentioned opposed the U.S. Clean Water Act. In fact, the Clean Water Act was passed with broad support from a variety of stakeholders, including environmental groups, industry, and government agencies.

The Clean Water Act (CWA) is a federal law enacted in 1972 with the aim of regulating and protecting the nation's waters from pollution and contamination. The CWA established a framework for controlling and limiting the discharge of pollutants into navigable waters, including rivers, lakes, and coastal areas, and set water quality standards to ensure that waters are safe for human use and aquatic life.

The Act provides a regulatory framework for permitting discharges of pollutants, sets water quality standards for contaminants, and establishes a program for regulating the discharge of pollutants from stormwater runoff. The CWA has been amended several times to strengthen its provisions, and it remains a critical tool for protecting water resources and public health in the United States.

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Answer:

population live in agricultural activities

Explanation:

decomposers recycles nutrients for soil so can plant also use it

The genus homo adapted to accommodate the obstetric dilemma through the following:

This is the branch of medicine which deals with pregnancy, childbirth and the postpartum period.

The genus homo adjusted to obstetrics dilemma by ensuring assistance during labor to ensure safe delivery of the babies by the females.

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Answer:

heat loss, energy for cellular process: transpiration, other forms of water, oxygen, carbon dioxide loss

Explanation:

The energy received by the Oak leaves which did not contribute to the synthesis of biomass may be used for or produced as heat loss, energy for cellular processes such as transpiration, other forms of water, oxygen, or carbon dioxide loss.

The material from previously living organisms known as biomass is utilised to produce bioenergy. Examples include wood, wood byproducts, energy crops, agricultural waste, and organic waste from commercial and residential sources. The main biomass energy source nowadays is wood and wood waste.

Renewable organic material from plants and animals is known as biomass. Up until the middle of the 1800s, biomass accounted for the majority of the entire yearly U.S. energy consumption. Biomass is a popular fuel in many nations, particularly for heating and cooking in underdeveloped nations.

Thus, the energy received by the Oak leaves which did not contribute to the synthesis of biomass may be used for or produced as heat loss, energy for cellular processes such as transpiration, other forms of water, oxygen, or carbon dioxide loss.

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Answer:

Thus during metaphase of mitosis, each chromosome (i.e., each chromatid pair) will contain two molecules

Explanation:

double stranded DNA (one molecule per sister chromatid). The following diagram depicts the behavior of one homologous pair of chromosomes during mitosis.

Six DNA molecules are there in three pairs of homologous chromosomes. This is because each homologous chromosome will contain two molecules of double-stranded DNA.  

Homologous chromosomes may be defined as two chromosomes of the same length, position, and structure one inherited from the father's side and the other from the mother's side.

The amount of genetic material may vary from phase to phase of the cell cycle. But at the time of metaphase during mitosis, each chromosome will possess two molecules of DNA.

Therefore, Six DNA molecules are there in three pairs of homologous chromosomes.

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Answer:

Wht are the answer choices

Explanation:

Answer:

In recent years PGD technology has been increasingly used by infertile patients undergoing IVF treatment, in order to screen their embryos for chromosomal abnormalities. Aneuploidy is extremely common in human embryos and leads to a developmental arrest, implantation failure and spontaneous abortion.

Answer:

woodlands and lush vegetation

Explanation

Deciduous woodlands contain trees with broad leaves such as oak, beech and elm. They occur in places with high rainfall, warm summers and cooler winters and lose their leaves in winter.

Answer:

high rainfall, warm summers and cooler winters

the landscape contains  oak, beech, elm, Lichen, moss, ferns, wildflowers and other small plants

The temperature in a temperate woodland & shrubland biome is hot & dry in the summer with temperatures up to 100 degrees F. The winter is cool & moist with the low temperature about 30 degrees F. Precipitation: Annual rainfall is 10-17 in.  

Hope This Helps

Answer:

we should listen to our elders

Explanation:

resources is important

Answer:

The bird has a narrow beak that is longer than the length of its head.

Explanation:

-The beak is long and thin, which helps it dip into the flowers to sip nectar (a sugary fluid the hummingbird uses for food).

-This bird (Hummingbird) have a long, narrow beak that allows it to reach the nectar from brightly colored, tubular flowers. It also feeds on insects and have a flexible lower beak that allows them to grab insects from the air during flight.

hope that helps :)

Answer:

The bird has a narrow beak that is longer than the length of its head

Explanation:

-The beak is long and thin, which helps it dip into the flowers to sip nectar (a sugary fluid the hummingbird uses for food).

-This bird (Hummingbird) have a long, narrow beak that allows it to reach the nectar from brightly colored, tubular flowers. It also feeds on insects and have a flexible lower beak that allows them to grab insects from the air during flight.

hope that helps :)

Answer:

Water helps the kidneys remove waste from your blood through urine. Water also helps keep blood vessels open, which lets blood flow through easier, letting the blood remove its waste through the kidney more efficiently.

Explanation:

Answer:

It helps in Osmoregulation and removal of excess liquid from the body.

Explanation:

It regulates fluid balance by excreting excess amount of water as urine while retaining the necessary amount of water in the body that is essential for living.

Osmoregulation - the process of maintaining salt and water/osmotic balance across membranes within the body.

The fluids inside and surrounding cells are composed of water, electrolytes, and non-electrolytes.

Answer:

They hibernate in winter and usually breed in spring.

Explanation:

The stretch receptors and neurons of the autonomic nervous system are parts of the gastrointestinal reflex pathway.

This is usually stimulated by senses as a result of the presence of stretch receptors and neurons of the autonomic nervous system.

They help in controlling  the release of acids in the stomach and also suppresses the release of digestive proteins.

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Approximately 10% of the available energy is passed from organisms at one trophic level to organisms at the next trophic level. This is known as the 10% rule or the 10% energy transfer efficiency.

Energy flows through trophic levels in an ecosystem starting with producers (plants or algae) that convert sunlight into chemical energy through photosynthesis. When herbivores consume these producers, only a fraction of the energy stored in the plants is assimilated into their bodies, while the rest is lost as waste or used for metabolic processes like respiration. This assimilated energy becomes available to the next trophic level.

As energy moves up the food chain, similar inefficiencies occur at each level. Carnivores that consume herbivores receive only about 10% of the energy stored in their prey. This pattern continues as energy is transferred to higher-level predators.

The low energy transfer efficiency can be attributed to several factors. First, organisms expend energy for basic metabolic processes, such as respiration, movement, and growth, which reduces the energy available for transfer. Second, energy is lost as heat during these metabolic processes. Additionally, not all parts of an organism are consumed or digested by predators, resulting in energy losses through waste.

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A myocardial infarction comprises a series of changes in the cardiac tissue that originate when there is an inadequate blood flow to the heart muscle or a coronary artery becomes blocked.

It is characterized by the sudden appearance of a picture of ischemic suffering (lack of irrigation) to a part of the heart muscle produced by the acute and total obstruction of one of the coronary arteries.

It is recognized by the sudden appearance of the characteristic symptoms of intense pain in the chest, in the precordial area and a feeling of general malaise.

Therefore, we can conclude that a myocardial infarction comprises a series of changes in the cardiac tissue that originate when there is an inadequate blood flow to the heart muscle.

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Answer:

Propagating a plant by cuttings will allow you to keep the special characteristics of that plant. Plants grown from seed will often be different from the parent plant and from each other. Propagating a new plant via cuttings avoids the difficulties of propagating by seed.

In the Hardy-Weinberg principle, the values of p and q will not change if evolution is not occurring.

The Hardy-Weinberg principle is a model used in population genetics to estimate genotypic and allele frequencies in a population.

The Hardy-Weinberg principle states that allele and genotypic frequencies remain constant in absence of evolutionary forces.

These evolutionary forces include nonrandom mating, gene drift, gene flow, mutation and natural selection.

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