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Liver fluke (Fasciola hepatica) is a parasite affecting a range of livestock and other species. Final hosts in which it can develop to sexual maturity include livestock such as sheep, cattle, horses, goats, alpacas and deer. People can be infected by eating water cress growing along creeks in fluke-infested country. While snails are intermediate hosts, sheep and pigs are definitive hosts.

The part labelled 1 is the stigma and the part labelled 2 is the ovary.

Predation include all interactions in which one organism consumes all or part of another. This includes predator-prey, herbivore-plant, and parasite-host interactions. Migration is the movement of individuals of a species from one place to another. Mutualism is the way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other. Edaphic factor is an abiotic factor relating to the physical or chemical composition of the soil found in a particular area.

Mosses do not have a proper roots, but have threadlike rhizoids that anchor them to their substrate. Rhizoids absorb water by capillary action, in which water moves up between threads of rhizoids and not through each of them as it does in roots. hyphae are also important in the reproductive process in that they produce new spores while root hairs are important for the uptake of nutrients

Enzymes lower the activation energy of a reaction, increasing the reaction rate.

The first stage of incomplete metamorphosis is the egg. During this time, the insect will hatch into a form called a nymph. The nymph is basically a small version of the adult insect.

Porifera are 'pore bearing' organisms, commonly known as sponges, are the only multicellular organisms without a nervous system. Their response to stimuli is by a contraction in their bodies.

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The plasmodium is a single-celled parasite that multiplies in red blood cells of humans as well as in the mosquito intestine. Hence, it doesn't live freely.

The production of ATP happens in the mitochondrion, which likewise exists in both animals and plants.

Osmosis is responsible for the ability of plant roots to draw water from the soil. Plants concentrate solutes in their root cells by active transport, and water enters the roots by osmosis.

Euglena use their chloroplasts to produce nutrients through photosynthesis. It is a dual organism as it can act both as an autotroph, making its own food, and heterotroph, feeding on other substances.

The diagram shows the lower arm which can be seen between the elbow and the wrist.

No expanded working has been attached for this question yet. The verified answer is Option C.