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Keeping in mind that a crayfish is saltier than the fresh water it occupies, and

ID: 208696 • Letter: K

Question

Keeping in mind that a crayfish is saltier than the fresh water it occupies, and remembering the idea of osmosis, note that the antennal gland deals directly with the consequences of this issue. What do you suppose the function of the antennal gland is?

A) To take on extra water

B) To take on salt

C) To eliminate salt

D) To remove extra water

Your instructor has assigned an unknown animal to your lab group for you to identify. The only information you are given is it is either a member of the Phylum Mollusca or the Phylum Annelida, it is discussed in this lab, and the animal you are observing is an adult. As your group observes the animal, you note the following: tentacles, a prostomium, a peristomium, a closed circulatory system, and parapodia. What is the identity of this creature?

A) Hirudu

B) Chiton

C) Nereis

D) Nautilus

)

If a plant mutated so it could not produce a tube nucleus, what would be the effect?

A) Pollen production would cease

B) The root system would be unable to take up water

C) The male gametes would not reach the female gamete

D) Photosynthesis would be severely decreased

Explanation / Answer

The antennal glands have the function of eliminating excreted substances from the animal's organism and maintaining the body's osmotic equilibrium. the function of the antennal gland is To eliminate salt.

For tentacles, a prostomium, a peristomium, a closed circulatory system, and parapodia. Chiton is the identity of this creature.

If a plant mutated so it could not produce a tube nucleus,The male gametes would not reach the female gamete