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ser-zykov [4K]
3 years ago
7

While sampling marine plankton in a lab, the student encounters fertilized eggs and decides to hatch them in the lab. The studen

t observes that the blastopore develops into the mouth. They also notice on further development that the animal has an 8-plated shell and a radula.
These eggs most likely belong to a/an _______.

A) mollusc.
B) echinoderm.
C) nematode.
D) arthropod.
Biology
1 answer:
bogdanovich [222]3 years ago
8 0

Answer:

A) mollusc.

Explanation:

Molluscs are soft-bodied animals often covered by a 8-plated shell.

During embryonic development blastopore becomes mouth in protostomes and mollusks are protostomes.

In mollusks such as snail, sepia radula are present. Radula have row of teeth consists of marginal teeth, lateral teeth and a median tooth and are used to peel off plant parts during feeding. They also used to scrape rocks to make depression in rocks for their habitats.  

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2). What do plants do with the sugars they produce in photosynthesis. Describe at least two different processes and two differen
SCORPION-xisa [38]
The sugar that is produced in photosynthesis is a glucose.
- Glucose can be used to provide energy for cellular activity.
- Excess of glucose is transformed into starch. Starch is transported into storage organs.
- Glucose can be transformed into cellulose, pectin, and chitin. These molecules are structural materials for the cell walls.
- Fats and amino acids can be formed from glucose. These molecules can serve as structural materials or can be stored.
8 0
4 years ago
What would happen to a deep sea fish brought rapidly to the surface? Explain your answer in light of the fact that gas pressure
Ann [662]

Answer:

Its gas-filled swim bladder explode.

Explanation:

The gas-filled swim bladder of deep sea fish is explodes when brought to the surface too rapidly because in the deep sea there is high pressure on the gases that is present in its tissue so when the fish is brought to the surface too rapidly, the high pressure is removed and the gases that were compressed in the tissue of the fish in deep sea are releases to expand that causes explode of gas-filled swim bladder. There is very high pressure in the atmosphere when we go deep into the sea which put pressure on the lungs of humans and gas-filled swim bladder of fishes which decrease its volume.

8 0
3 years ago
Why is it important that the phospholipid bilayer be both hydrophobic and hydrophilic?
oksano4ka [1.4K]

B) They maintain balance in the cell.

That mix of hydrophobic and hydrophilic, in other words, the mix of repelling and attraction maintains the aqueous balance in a cell and it's exterior.



Hope it helped,



BioTeacher101

7 0
3 years ago
How could the cell membrane then be important for homeostasis
Masteriza [31]

Answer:

The cell membrane is an important factor for homeostasis to happen.

Explanation:

Because the cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell.

5 0
3 years ago
Exercise scientists at an Olympic training center want to monitor athletes to determine at what point their muscles are function
RoseWind [281]

Answer:

The correct answer is option c, that is, lactic acid.

Explanation:

One can determine the anaerobic function of muscles by observing the levels of lactic acid buildup in muscles. The production of lactic acid in muscles takes place by the process of anaerobic respiration. At the time of rigorous training or exercise, one requires more amount of energy for a short burst of time.  

As oxygen is already used for higher purposes in the body, the levels of oxygen get reduced for performing any more activities. Thus, in order to generate more energy the process of anaerobic respiration takes place. Anaerobic respiration is the form of respiration that takes place in the absence of oxygen. In the process, one molecule of glucose gets transformed into two molecules of lactic acid, which gets accumulated in the muscles. This production of lactic acid provides a quick form of energy, which is utilized at the time of intense training and thus, one can check the anaerobic functioning of the muscles by observing the levels of lactic acid in the muscles.  

4 0
3 years ago
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