Question

Which of the following statements is not true about parasitism?
A.The host is generally larger than the parasite.
B.An efficient parasite usually kills its host.
C.Smaller parasites often live as endoparasites within the body of the host
D.Ectoparasites are attached to the outside of the host's body by specialized organs

Answer 1

Hint: Ecosystems become more complicated in wild areas untouched by humans. Millions of species interact in these complex ecosystems living in balance together. Tropical rainforests such as the Amazon basin contain millions of different species, all reliant on each other and nonliving factors in their environment.

Complete step by step answer:Symbiosis-The interactions between these living things can be divided into several categories. Some organisms live in symbiosis, a long-lasting ecological relationship between two organisms. Although we usually think of both organisms benefiting from symbiosis, there are other types of symbiosis as well. Let's look at each one in detail next.
Mutualism- occurs when both organisms are benefited. You can think of mutualism as you helping a friend study for a test. your friend gets the help they need. One example of mutualism in natural ecosystems is a symbiotic organism called a lichen
Commensalism-In this type of interaction only one organism is benefited. This is called commensalism. This would be like if you gave your notes from class to a friend to study. You get nothing, but your friend benefits from having excellent notes to learn from.
Parasitism- definition of a parasite is- it is an organism that spends at least part of its life cycle in or on another organism, harming it in a way that benefits the parasite. The organism the parasite feeds on is called the host. Most parasites are smaller than the host organism - usually much smaller, as with fleas and ticks - and reproduce more quickly.
 Hence the correct answer is option B, an efficient parasite usually kills its host.

Note:In parasitism, the parasite will never kill its host because it has to draw its nutrients and minerals from the host and if the host dies the parasite cannot survive on its own. Parasitism is defined as the association of two organisms of the same or different species, in which one lives at the cost of the other. A parasite is that which lives on other organisms called a host, receiving nourishment and shelter without any compensation for the host.