The vegetal pole of a frog zygote differs from the animal pole in that the vegetal pole has a higher concentration of yolk.
After the fertilisation of the egg by the sperm in a frog, three regions are formed in the zygote. These are:
- Upper animal hemisphere or upper animal pole which shows pigmentation.
- The grey crescent which is a small area with almost no pigmentation. It is present in between the upper animal pole and the lower vegetal pole.
- Lower animal hemisphere or lower vegetal pole which is white in color.
Thus, the vegetal pole of a frog zygote differs from the animal pole in that the vegetal pole has a higher concentration of yolk.
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Answer:
D) the soil components remained for plants to grow.
Explanation:
The soil components that is remained after the removal of the forest provides a nutritive medium for the faster growth of plants. The faster rate of secondary secession occurs due to the presence of nutrients in the soil which ultimately increases the growth of the plants. The soil components has roots, seeds and other biotic organisms of the previous plants that is decomposed by the decomposers and provides nutrients to the plants.
Answer:
For example, if the seeds that the bird needs to eat is bigger, over time it will adapt to get a bigger beak to eat the bigger seed. The birds that have adapted reproduce and soon more and more birds that have a bigger beak for the bigger seed are more common. If the type of food available changes than the bird will most likely adapt to eat that food.
<span>Among the choices provided the answer to the question is salt. Sustenance protected with salt or sugar incorporate the previously mentioned corned hamburger and additionally bacon, salt pork, sugar-cured ham, organic product jelly, sticks, and jams, among others.</span><span />
Answer:
Having bacteria would produce organic molecules and defeat the whole purpose of the experiment which is to make organic molecules from inorganic molecules. The experiment was supposed to demonstrate the formation of the first organic molecules that initiated life on primordial earth. It is believed that lightning powered the formation of the first simple amino acids, like glycine, from the primordial atmosphere which was mainly composed of carbon dioxide and methane.
