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rewona [7]
3 years ago
8

What is the function of the primary and secondary pharyngeal bars in Amphioxus?

Biology
1 answer:
viktelen [127]3 years ago
5 0

Answer:

In Branchiostoma, it is used mainly for feeding. The pharynx consists of numerous pharyngeal bars, with pharyngeal slits between them. The animal sucks in water through its mouth and forces it out through the pharyngeal slits, capturing small food particles from the water

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A farmer crossed a yellow maize plant (Yy) with another yellow maize plant (YY). He planted 200 seeds from this cross. How many
Vladimir [108]

Answer: 200 seeds will be yellow.

Explanation: In this crossing, one parent will produce half of its gametes carrying allele Y and the other half carrying allele y. The other parent will have gametes with allele Y. After fecundation, the offspring could phenotype YY or phenotype Yy.

In genetics, Y is related to the dominant allele and y to the recessive one. In this case, having the Y dominant allele determine the color yellow. Therefore, as all of the offspring has the dominant allele Y for yellow, all of the seeds will be yellow, i.e., <u>200 seeds will be yellow</u>.

4 0
3 years ago
Put numbers in the boxes to arrange the following statements in the order that they happen.
Olin [163]

Answer:

[3 ] pollination

[4 ] fertilisation

[ 2] pollen release

[5 ] embryo development

[1 ] pollen tube growth

[6 ] seed dispersal

3 0
2 years ago
Symptoms of uric acid.​
irina [24]

Answer:

Elevated uric acid levels lead to a condition known as "Hyperuricemia."

Explanation:

This condition occurs when there is an excessive presence of uric acid in the blood. It can be divided into:

  • Primary hyperuricemia
  • Secondary hyperuricemia

Primary hyperuricemia occurs when the kidneys are not able to eliminate uric acid in an efficient/proper way. This can be due to the consumption of foos that are very high in purines. For example, liver, gravy, alcoholic beverages, and some vegetables such as spinach and asparagus.

Secondary hyperuricemia may occur to several possible reasons. For instance, kidney disease, in which the kidney is not able to eliminate uric acid; chemotherapy, which may lead to the accumulation of uric acids; or medications that increase the level of uric acid in the blood.

Symptoms include:

  • Fever.
  • Extreme and abnormal fatigue.
  • Joint inflammation.
  • Urination problems.
  • Kidney stones.

To prevent this disease and as part of a treatment (along with medications prescribed by a doctor), a patient should opt to consume foods that are low in purine, such as lettuce, tomatoes, cereals, fruits, milk, eggs, amongst others.

7 0
3 years ago
In which form do plants store energy?<br> starch<br> glycogen<br> chitin<br> cellulose?
larisa [96]

Answer:

<h2><em><u>starch</u></em></h2>

Explanation:

Plants store carbohydrates in long polysaccharides chains called starch.

7 0
3 years ago
Read 2 more answers
What two body system does endrocrine system rely on to generate and transport signal
Eduardwww [97]
Circulatory system
The circulatory system is the transport system for endocrine information. While the nervous system uses neurons, the endocrine chemicals and hormones must circulate through the body via blood vessels. Many glands in your body secrete hormones into the blood.
8 0
3 years ago
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