Which is produced when an egg and a sperm unite during a plant’s life cycle?

Answers

Answer 1
Answer:

Answer:

Zygote

Explanation:

As a result of meiosis in the male and female sex organs of a plant, male and female gametes or male and female sex cells produced respectively. Gametes are universally haploid. Male and female gametes fuse or fertilize to form a diploid zygote. A zygote or fertilised egg is a one-celled structure which later develops into an embryo.

Answer 2
Answer:

Answer:

it's C. Zygote

Explanation:

I've taking the test/quiz for my biology class on Edge, and that was the correct answer that i got.


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If a liquid is sealed in a container and kept at constant temperature, how does its vapor pressure change over time?a. It continues to steadily increase. b. It increases at first, then remains constant. c.It increases at first, then decreases. d. It continues to steadily decrease.

7. What is e role of a Clinical Psychologist?8. What is the role of a School Psychologist?

Answers

7. A clinical psychologist typically works in private practice or in mental health facilities, providing therapy and counseling to individuals with emotional and behavioral problems. They may also conduct research on various psychological disorders and treatments.

8. A school psychologist works within an educational setting, such as a school or district, and provides support and services to students, teachers, and families. Their responsibilities include assessment and evaluation of student learning abilities, behavioral interventions, and consultation with parents and teachers to improve academic outcome

Both roles involve working closely with individuals and groups to address their mental health and well-being needs. However, the specific focus and settings of these professions vary significantly.

Blood pressure would increase as a result of a decrease in __________.

Answers

water and ice and i dont know the rest

As a cook chops red onions he begins to tear up due to activation of the lacrimal gland. Which of the following nerves provided the stimulus?A) the vagus nerve (X)
B) the optic nerve (II)
C) the facial nerve (VII)
D) the olfactory nerve (I)

Answers

Answer:

C) the facial nerve (VII)

Explanation:

The facial nerve (VII) is a cranial nerve. The cranial nerves are those nerves which arise from the brain. Most of the cranial nerves contain both motor and sensory neurons. Cranial nerves are connect to the various organs. Cranial nerves are associated with parasympathetic nervous system.

The facial nerve supplies nerve to many glands of the head and neck including lacrimal glands.

Thus, the facial nerve (VII) provided the stimulus to the lacrimal gland that cause tear while chopping oninons.

In which ways are RNA and DNA different?a. RNA has ribose sugar, DNA has deoxyribose sugar
b. RNA has uracil, DNA has thymine
c. RNA is single-stranded, DNA is a double-helix
d. all of the above

Answers

Answer:

d. all of the above is the correct answer.

Explanation:

These are the main difference between RNA and DNA

  • Sugar present in RNA is ribose sugar whereas sugar present in DNA is deoxyribose sugar.
  • Nitrogenous bases present in DNA are adenine, guanine, cytosine, and thymine whereas in the case of RNA nitrogenous bases present are adenine, guanine, cytosine and uracil which is replaced by thymine in DNA.
  • RNA is single-stranded whereas DNA is a double-helix.

thus the all the above(D) options are correct.

Final answer:

RNA and DNA differ in three major areas: the types of sugars they contain, the bases they use, and their structure. RNA contains ribose sugars and the base uracil, while being single-stranded. In contrast, DNA contains deoxyribose sugars, the base thymine, and has a double helical structure.

Explanation:

RNA and DNA, which can both be found in cells, have several significant differences. To answer your question, the correct choice would be (d) all of the above because:

  • RNA has ribose sugar, while DNA has deoxyribose sugar. The difference is that the deoxyribose sugar in DNA is missing one oxygen atom compared to the ribose sugar in RNA.
  • RNA contains the base uracil whereas DNA uses the base thymine. This change makes DNA more stable and less likely to mutate.
  • Finally, RNA is single-stranded and DNA is a double helix. The double-stranded DNA is more stable resulting in a reduction in damage and loss of genetic information.

Learn more about Difference between RNA and DNA here:

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What is an example of people changing the way water flows? *

Answers

Answer:

waterway has its own particular characteristics related to water flow, velocity, and quantity.

Altered water ways or hydrology defines the variation in such characteristics including water flow. Water flow naturally depends on the climate and landscape ( valleys, mountains and flood plains).

There are several examples of people changing the way water flows such as construction of a dam or weir and the addition of a culvert or pipe. Dams are use to control the flow of water and  through culvert or pipe, the flow or direction can be changed.

Changes in vegetation and landscape by people also affects the flow of water as well.

Darwin hypothesized that there are definite steps to natural selection. Consider the model here. Use the Roman numerals (I - III) to guide you through the steps. Which is an accurate description of Darwin's hypothesized theory of natural selection? A) Sexual reproduction of bacteria cause variation. Some bacteria survive and some do not. Over time all of the bacteria should become extinct.
B) In any population, variation exists. Some bacteria are resistant to antibiotics. Most bacteria die, but the bacteria that are resistant survive and reproduce.
C) In a population of bacteria that are exposed to antibiotics, some bacteria change their genetic make-up and survive. The new genetic make-up is passed on to offspring.
D) There is a change in the environment: an antibiotic is added. Some of the bacteria are capable of changing to the new environment. They survive and reproduce, passing along their favorable traits.

Answers

Answer:

The most appropriate answer would be D) There is a change in the environment: an antibiotic is added. Some of the bacteria are capable of changing to the new environment. They survive and reproduce, passing along their favorable traits.

Natural selection refers to the process by which organisms who are better adapted to the change in the environment have better chances for survival and reproduction.

The steps for natural selection can be explained as:

I. Inherited variation: Within a population, organisms often exhibit variations which can be inherited such as color, size, et cetera.

II. Competition: This is the phase in which organisms struggle to survive. During this, species usually produce more offspring as compared to the carrying capacity of the environment.

In the given situation, environment change is the addition of antibiotic.

III. Selection: It is the phase of differential reproduction that is, organisms who are best adapted to the environmental change have better chances to mature to reproductive age. They reproduce and pass the beneficial traits to the offspring.

Bacteria which are better adapted to the new environment survive, reproduce, and pass their beneficial traits to the next generation.

IV. Evolution: Changes in allele frequency in a population accumulate over time and leads to the evolution.

The answer is B because if there is variation there would be certain bacteria with a favorable trait to survive when the antibiotic is released.