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Zinaida [17]
3 years ago
9

Eric is observing various types of eggs and trying to correlate them with the mode of fertilization. One of the eggs has a calca

reous shell with a large amount of yolk. Another is wet with a moderate amount of yolk and with many coatings of jelly above it. What could be the mode of fertilization of the animals to which they belong?Select one of the options below as your answer:A. External and internal, respectively B. Internal and external, respectively C. Both external
Biology
2 answers:
dimaraw [331]3 years ago
8 0
C.) Both External ............
Nikolay [14]3 years ago
4 0

Answer:

B. Internal and external

Explanation:

The first egg has a calcareous shell, so we can imagine it is a dry and hard shell, and the egg has a large amount of yolk. These are characteristic of an egg generated from the internal fertilization, where the union of gametes occurs within the animal's body. During copulation the male uses his genitals or copulators to release sperm into the female's body, which results in an egg similar to the one described in the above question. Birds have this type of fertilization.

The second egg has a wet appearance, with gelatinous substances on its surface. These are characteristic of eggs resulting from external fertilization, where gametes fuse outside the female's body in the environment. In external fertilization, there must be water for the male gametes to move to the female. In addition, males need to eliminate large numbers of gametes to ensure they reach the eggs. Fish have this kind of fertilization and this kind of egg.

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solniwko [45]
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Which of the following promotes closure of the minivalves associated with lymph capillaries?
Molodets [167]

Answer:

increasing pressure inside the lymph capillary

Explanation:

Lymph is a fluid like the blood which carry the White blood cells which can fight against the infection. The lymph flows in separate vessels called lymphatic vessels.

The lymphatic vessel is very thin-walled smooth muscle containing tube-like structure which allows the transport of lymph.

The lymph vessel like blood vessel contains the valves called mini valves which prevent the backward flow of the lymph.

When the pressure in the tiny lymph capillaries which supplies lymph to the organs increases, the mini valves closes to prevent backflow of lymph and is the mechanism of lymph flow.

Thus, the selected option is the correct answer.

6 0
3 years ago
Which of the outcomes would occur if a moss had a mutation that inhibited the production of sporopollenin? The likelihood of out
ivolga24 [154]

Answer and Explanation:

Greetings!

Let's~answer~your~question!

If~ a ~moss~ had ~a ~mutation ~that~ inhibited ~the ~production ~of sporopollenin,~the~ spores\\ would~ dry~ out ~more~ quickly.

Thus,~making~the~third~statement~true.

Hope~this~helps~and~have~a~blessed~day~ahead!

-Isabelle~Williams

6 0
3 years ago
The largest amount of carbon dioxide is transported in the bloodstream in the form of carbonic anhydrase. True False
motikmotik

Answer: False, it is transported as bicarbonate

Explanation: Carbonic anhydrase is an enzyme belonging to the family of metalloenzymes that catalyzes the conversion of carbon dioxide and water to ions and carbonic acid. This enzyme is found in red blood cells where carbon dioxide enters by diffusion. Once it diffuses through it is then converted by carbonic anhydrase to bicarbonate and hydrogen ions.

That is how its transported in bloodstream, passes through the heart via the venous system, to the lungs. Therefore the answer is False.

5 0
3 years ago
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