reading toefl 1-4

Different types of relationships exist between living things. One type of relationship is parasitism, in which one partner benefits while the other loses. A very different type of relationship is symbiosis, in which, both partners benefit.

An example of a parasitic relationshop exists between the stone crab and sacculina, a type of barnacle. The sacullina attaches itself to the stone crab. It then eats into the crab, and the stone crab becomes disabled.

An example of a symbiotic relationship exists between the hermit crab and the calliactis anemone. The anemone attaches itself to the crab, but it is not a parasite because it does not harm the crab; it feeds on food that is dropped by the crab. the anemone even helps the crab by protecting the crab from other predators with its tentacless.

the subject of the passage is....

• two different kinds of relationships between living things

• parasitic relationship

• relationships that are mutually beneficial to living things

• symbiosis

Different types of relationships exist between living things. One type of relationship is parasitism, in which one partner benefits while the other loses. A very different type of relationship is symbiosis, in which, both partners benefit.

An example of a parasitic relationshop exists between the stone crab and sacculina, a type of barnacle. The sacullina attaches itself to the stone crab. It then eats into the crab, and the stone crab becomes disabled.

An example of a symbiotic relationship exists between the hermit crab and the calliactis anemone. The anemone attaches itself to the crab, but it is not a parasite because it does not harm the crab; it feeds on food that is dropped by the crab. the anemone even helps the crab by protecting the crab from other predators with its tentacless.

which of the following is NOT true about prasitic relationship?

• there are two partners in a parasitic relationship

• one partner in a parasitic relationshop hurts each other

• the stone crab can be part of a parasitic relationshiip

• a parasitic relationhip is usua;; symbiotic

Different types of relationships exist between living things. One type of relationship is parasitism, in which one partner benefits while the other loses. A very different type of relationship is symbiosis, in which, both partners benefit.

An example of a parasitic relationshop exists between the stone crab and sacculina, a type of barnacle. The sacullina attaches itself to the stone crab. It then eats into the crab, and the stone crab becomes disabled.

An example of a symbiotic relationship exists between the hermit crab and the calliactis anemone. The anemone attaches itself to the crab, but it is not a parasite because it does not harm the crab; it feeds on food that is dropped by the crab. the anemone even helps the crab by protecting the crab from other predators with its tentacless.

According to the passage, what does sacculina eat?

• the stone crab

• barnacles

• food dropped by the crab

• other parasites

Different types of relationships exist between living things. One type of relationship is parasitism, in which one partner benefits while the other loses. A very different type of relationship is symbiosis, in which, both partners benefit.

An example of a parasitic relationshop exists between the stone crab and sacculina, a type of barnacle. The sacullina attaches itself to the stone crab. It then eats into the crab, and the stone crab becomes disabled.

An example of a symbiotic relationship exists between the hermit crab and the calliactis anemone. The anemone attaches itself to the crab, but it is not a parasite because it does not harm the crab; it feeds on food that is dropped by the crab. the anemone even helps the crab by protecting the crab from other predators with its tentacless.

The calliactis anemone....

• is a parasite

• harms the hermit crab

• eats into the hermit crab

• assists the hemit crab

Different types of relationships exist between living things. One type of relationship is parasitism, in which one partner benefits while the other loses. A very different type of relationship is symbiosis, in which, both partners benefit.

An example of a parasitic relationshop exists between the stone crab and sacculina, a type of barnacle. The sacullina attaches itself to the stone crab. It then eats into the crab, and the stone crab becomes disabled.

An example of a symbiotic relationship exists between the hermit crab and the calliactis anemone. The anemone attaches itself to the crab, but it is not a parasite because it does not harm the crab; it feeds on food that is dropped by the crab. the anemone even helps the crab by protecting the crab from other predators with its tentacless.

which of the following can be inferred from the passage?

• all crabs are involved in parasitic relationship

• all crabs are involved in symbiotic relatioship

• some crabs are involved in symbiotic relationships, while others are not

• crabs are involved in neither parasitic nor symbiotic relationship