Many plants have a waxy cuticle to prevent them from losing water. This is made ofA. lipids.
B. nucleic acids.
C. carbohydrates.
D. protein.

Answers

Answer 1

Answer: The waxy cuticle of plants are made of (A) lipids and also hydrocarbon polymers which give it the waxy, protective structure.

Answer 2

Answer:

Answer: A. Lipids

Explanation:

I just took the test, and the answer is lipids!

Good luck!

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Vascular plants are known to have arisen from the non-vascular plants. Which of the following features differentiates bryophytes from the vascular plants? a. presence of flavonoids. b. dominant haploid phase in life cycle. c. absence of cuticle.

Answers

. dominant haploid phase in life cycle
Bryophytes donot have the dominant haploid phase in their life cycle while vascular plants having dominant haploid phase in their life cycle

Answer:

The correct answer will be option B (dominant haploid phase in life cycle).

Explanation:

The life cycle of a plant shows alternation of generations in two phases- gametophyte(n) and sporophyte(2n).

Bryophytes is a division of plant kingdom also known as non-vascular plants (mosses, liverworts, hornworts).The gametophyte (haploid) phase dominates in the non-vascular plants while sporophytic phase (diploid) is reduced so, when you see a bryophyte you see a gametophytic stage.

In vascular plants also known as Tracheophytes, the gametophytic phase is highly reduced while sporophytic phase (2n) dominates the life cycle of plants.

thus, the correct answer is option B.

(a) It is possible to measure a patient’s heart rate by either palpating their peripheral pulse, by observing their ECG, or by listening for the lub-dup through a stethoscope. However, patients with atherosclerosis of the femoral artery may not have a pulse in the popliteal artery or dorsalis pedis of the foot. Does this mean that they will also lack a heart beat (lub-dup) or QRS complex? Explain the relationship between a heart beat, pulse, and QRS complex. (B) Why is there a delay between systole of the ECG and the resulting pulse felt in the finger (R-Pulse)?

Answers

b)When you listen to the heart sounds, you are hearing the flow of blood which stops abruptly when a heart valve closes. This produces the "lub-dub" sounds. 1st heart sound (when the Mitral Valve closes) as the ventricle contracts (systole) and then 2nd heart sound (when the Aortic Valve closes) and the ventricle starts to fill again (diastole)
The pulse is the wave of pressure you can feel through the artery walls. This denotes systole.
The ECG's QRS complex is the electrical signal that tells the Ventricles to contract. You can see that the QRS occurs right at the beginning of systole and triggers Isovolumetric contraction.
So the QRS on the ECG, the pulse wave you can feel (ie. the rise in aortic pressure) and the 1st heart sound all signify SYSTOLE.
there a delay between systole of the ECG and the resulting pulse felt in the finger (R-Pulse) because it takes a little bit of time for the pressure to transmit through the body, as the finger is not on the heart (if it was there would be no delay)

Which pair of organisms show convergent evolution?

Answers

A convergent evolution is a phenomenon of independent evolution of similar traits in species that are in different lineages. These traits are similar in form or function but were not present in the last common ancestor of those species.
There are many examples of convergent evolution among plants and animals. Among the plants, both cactus and euphorbia are succulent plants, have spines, live in the deserts, but they belong to the different families. Further, dolphin, which is a mammal, is more similar to fish, than to other mammals. Or, both birds and bat, which is the mammal, have wings. So, all these examples of convergent evolution suggest that the living in the similar environmental conditions led to development of similar forms between distinct species.

The answer is D. The Tasimain devil and wolverine.....

How many egg chromosome number do human, cat, onions, rye, guinea pig, and chiken have??

Answers

all humans have 46 chromosomes, and 23 chromosome pairs. one chromosome from each pair goes into a child at conception. there is only one chromosome pair that determines gender

If you are talking about women and eggs for babies, it's 24. the guy also has 24 and when they make a baby they come together with 48.

Which type of bacteria causes tetanus?

Answers

The type of bacteria that causes tenus is the Clostridium tetani.

Which term is not the name of a classification level?a. allele
b. kingdom
c. order
d. phylum

Answers

Allele is not the name of a classification level because its not a part of taxonomical hierarchy. Therefore, option (A) is correct.

What is Taxonomic Hierarchy?

Taxonomic rank is the relative level of a group of organisms, known as a taxon, within an ancestral or hereditary hierarchy. This term is used in the field of biological categorization.

The Linnean system is the foundation for the modern method of classification, which consists of eight different levels of taxa. These levels, which are listed from most general to most specific, are as follows: domain, kingdom, phylum (plural, phyla), class, order, family, genus (plural, genera), and species.

Learn more about classification level, here:

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Answer:

Explanation: I took the test with these answer and got A correct

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