While studying evolution, a student comes across a cladogram that includes clades like amphibia, reptilia, aves, and mammalia. What must be the basal clade? plantae chordata nonchordata

Answers

Answer 1

Answer:

Answer:

The correct answer is chordata.

Explanation:

The Reptilia, Amphibia, Mammalia, and the Aves all come under the kingdom Animalia, and all are the part of the basal clade Chordata. This signifies that all these species during a certain point of their life exhibited a notochord. A notochord refers to a cartilaginous rod of skeleton that supports the body in all the embryonic and in some of the adult chordate animals.

Answer 2

Answer: Chordata.
(Animals with spinal nervous cord)
Animals cant come under plants, can they?
And as well animals cant be under a non chordata because animals have spinal cords.

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Minerals are micronutrients required by the body for various key functions. The mineral _____ (a. calcium; b. iron; c. sodium) is required to carry oxygen in the blood to all body tissues, and _____ (a. vegetable oil; b. red meat; c. milk) is a rich source of this mineral.Minerals are micronutrients required by the body for various key functions. The mineral is required to carry oxygen in the blood to all body tissues, and is a rich source of this mineral.
The sequence of a chromosome can be represented by ABCD@EFGH, where the @ symbol represents the centromere. Which of the following chromosomes represents an inversion in this chromosome?
Altitude is greater what what point

In meiosis II what happens during anaphase?

Answers

Answer:

Pulling apart or separation of sister chromatids

Explanation:

Meiosis is a type of cell division that results in four daughter cells with each having half number of chromosomes as the parent cell. It is the cell division that leads to formation of gametes to enable sexual reproduction. Division occurs twice during meiosis because before the two halves of a duplicated chromosome called sister chromatids separate, it still needs to separate homologous chromosome, which is a similar but non-identical pair of chromosome received from both parents. Hence, meiosis occurs in a two step division process i.e. Meiosis I and Meiosis II.

Meiosis II is the mitotic division of each of the haploid cells produced in meiosis I. Note that, homologous chromosomes separate in anaphase I of meiosis I, and further undergoes cytokinesis (division of cytoplasm) to produce two haploid (reduced number of chromosomes) daughter cells.

During anaphase of meiosis II, the individual chromosomes (sister chromatids) separate at the centromeres (point of attachment between two sister chromatids). The separated chromosomes are pulled apart towards each pole of the cell by the spindle fibres.

Meiosis II the chromosomes are pulled to the center of the cell and line up randomly at the equato
Anaphase II the centromere of each chromosome splits -the sister chromatids separate and move to opposite poles

The offspring of two individuals must have certain characteristics for it to be considered a species?Select all that apply
A) they must be fertile
B) they must be dominant
C) they must be viable
D) they must be unique
E) they must be sterile

Answers

B ) they must be dominant

Which of the following best describes an ecosystem?A) all of the non-living factors that characterize in a given area
B) all of the different species living in a given area
c) all of the members of a single species living in a given area
d) all of the biotic and abiotic factors in a given area

Answers

The best description of an ecosystem is d) All of the biotic and abiotic factors in a given area. Therefore, the correct answer is option d.

An ecosystem includes both living (biotic) and non-living (abiotic) components in a specific geographic area.
Biotic factors encompass all the different species of organisms, including plants, animals, fungi, and microorganisms, that interact with each other and their environment within the ecosystem.
Abiotic factors include the non-living elements of the ecosystem, such as temperature, climate, soil, water, sunlight, and physical geography. These abiotic factors play a critical role in shaping the characteristics and dynamics of the ecosystem.
Ecosystems are dynamic and complex systems where the interactions among biotic and abiotic factors contribute to the overall functioning and stability of the environment.

Options A, B, and C do not fully capture the comprehensive nature of an ecosystem:

Option A focuses solely on the non-living factors and omits the crucial biotic components.
Option B describes the diversity of species within an ecosystem but does not include the abiotic elements.
Option C narrows the scope to a single species, which is a population, rather than considering the entire ecosystem with its diverse species and environmental factors.

Therefore, the correct answer is option d.

Learn more about Ecosystem here:

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❅ D) all of the biotic and abiotic factors in a given area
This best describes a ecosystem.

Epithelial cells grow close together to form the body's .

Answers

The answer is skin.

There are four basic types of animal tissue - epithelium, connective, nervous, and muscle tissue. Epithelial cells form epithelium which covers surfaces of blood vessels and organs in the body. All glands are, as well, made of epithelial cells. Also, epithelial cells grow close together to form the body's skin.

Helium has an atomic number of two, so its outer energy level is full. Helium is considered _____.neutral
inert
an anion
a cation

Answers

Helium has an atomic number of two, so its outer energy level is full. Helium is considered inert. The correct option among all the options given in the question is the second option. It is actually non toxic in nature. Helium is also colorless, odorless and tasteless in nature. It is the first in the noble gas group of the periodic table.

Answer:

inert

Explanation:

Which of the following fossils is NOT found within the rock layers of the Grand Canyon?A. trilobites
B. dinosaurs
C. stromatolites
D. armored fishes

Answers

the answer is dinosaurs

Answer is armored fish.

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