If a dam is built to stop the flow of a bog, what is the likely effect of this change

Mandarinka [93]

Answer:

The organism selected based on sexual reproduction is tortoise and based on asexual reproduction is hydra. Both of them are explained in detail below with diagrams.

Explanation:

Tortoise: These are land dwelling reptiles and have a hard shell on their back to protect from predators. They can pull their necks inside for protection. They are different from turtles which as aquatic in nature. They mostly sleep at night and are active during day. These organisms prefer to stay isolated and are not comfortable in crowds.Tortoises have very long life span that between 80-150 years with the oldest one being 255 years.

Sexual reproduction- In most cases, females tend to be larger in size than males. They reproduce sexually by laying eggs at night. Their gametes are haploid in nature which when fused result in a diploid organism. The number of chromosome in a tortoise is 52.

The tortoise eggs can remain fertile till four years after fertilization. One single mating allows 30 eggs to be fertilized. Once the female finds the right environmental conditions, the eggs are laid.

Advantage of sexual mode of reproduction:

Offspring produced have genetic variation.
This genetic variation allows them to adapt well to the surrounding.
All the offspring don not die of a single disease because they are genetically varied.

Disadvantages: Fewer organisms are produced.

Gap between mating season.

Hydra is a fresh water organism belonging to class Cnidaria. It's body has a radial symmetry. The body contains stinging cells known as cnidocytes, which contain neurotoxins. These are released when faced by a predator. Its body is made up of two layers-epidermis and gastrodermis.

If a hydra is cut in half, both the cut parts regenerate into two new hydra. Their mode of reproduction is asexual through the process of budding. a

A new bud arises in some part of the body of hydra which matures and breaks off to form a new hydra. Most hydra are fixed or senile but some of them are free moving.

Advantages of asexual reproduction:

The population multiplies rapidly in favorable conditions.
Single parent is needed.
It's faster than sexual reproduction.

Disadvantages of asexual reproduction:

Limited diversity
Population becomes difficult to control.
Negative mutation continue through the cell lines as there is no mixing of gametes.

6 0

3 years ago

What percentage of offspring will have neurofibromatosis?

Reptile [31]

100% of offspring will be affected. The father is affected and is homozygous dominant, the mother is unaffected and is homozygous recessive. Since there are homzygous dominant genes present, they will always be there to cover the recessive genes, therefore, all offspring will be affected. Hope this helps! (:

3 0

3 years ago

Mark knows that animals reflexively blink when air is puffed at their eyes. Now Mark wants to use this fact and classical condit

Rus_ich [418]

Answer:

the tone is the neutral stimulus

Explanation:

In classical conditioning, as first experimented by Pavlov in his experiment with dogs, the bell that was presented initially was the neutral stimulus which was not capable of eliciting salivation alone. He later paired the neutral stimulus (the bell), with the unconditioned stimulus (meat powder) which naturally elicited salivation. The neutral stimulus then became associated with the unconditioned stimulus to eventually trigger salivation when presented alone.

In the situation of the rat of which Mark wants to train it by applying classical conditioning technique, the tone is the neutral stimulus. Except it is paired with the unconditional stimulus which naturally would make the rat blink, it would only attract the attention of the rat without making it to blink.

6 0

3 years ago

COMMON TOPICAL MEDS What are the effects of oral drug administration

ddd [48]

Answer:

Dry Mouth (Xerostomia)

Fungal Infection.

Gum Swelling (Gingival Overgrowth)

Inflammation of the Lining Inside of the Mouth (Mucositis)

Mouth Sores (Ulcers)

Taste Changes, Including Metallic Taste.

Tooth Decay.

Tooth Discoloration.

4 0

2 years ago

Explain fetal circulation in easy way so that all can understand easily

lisabon 2012 [21]

Answer:

In animals that give live birth, the fetal circulation is the circulatory system of a fetus. The term usually encompasses the entire fetoplacental circulation, which includes the umbilical cord and the blood vessels within the placenta that carry fetal blood.

7 0

3 years ago