Osmoconformers

Q. Many fresh water animals cannot live for long in sea water and vice versa mainly because;

1. Change in nitrogen level
2. Change in thermal tolerance
3. Variation in light intensity
4. Osmotic problems

Q. A littoral gastropod will have thickest shell when it is located at the?

1. High tide marks on a rock beach
2. Low tide marks on a mud beach
3. Greatest depth in a sand beach
4. Bottom of a rock pool

Q. Osmoregulators expend a considerable amount of energy to maintain a constant internal environment, in response to changes in the surroundings.

1. True
2. False