Question

An example of nematodes
(a) Yeast, Hydra
(b) Rhizopus, Chlorella
(c) Roundworm(Ascaris), Hookworm(Ancylostoma)
(d) All of the above

Answer 1

Nematodes are unsegmented vermiform animals. The epidermis of nematodes has dorsal and ventral nerve cords. The nematode present in the soil-derived in nutrition from bacteria, fungi, and other nematodes. They are an important part of nutrient cycling. A spacious soil contains several nematodes in it.

Complete answer:
An example of nematodes is Roundworm (Ascaris) and Hookworm (Ancylostoma). The hookworm and roundworm are a type of parasite that can be passed from animal feces to humans. When a hookworm enters the body of a human it causes redness, itching, and pain. These parasites can be passed from licking by a dog to humans. They cannot harm or make others sick but some can. Roundworms and hookworms can be killed by using dewormers such as piperazine or pyrantel.

Additional Information:
Yeast, Hydra: Yeast and Hydra are the two organisms that perform budding which is the process of a sexual reproduction by which an outgrowth called bud is detached from the parent when fully mature. Yeast is unicellular eukaryotic fungi that are used in the production of beverages, pharmaceuticals, foods, etc. Saccharomyces cerevisiae is a drink that is commonly known as Baker’s yeast.
Rhizopus, Chlorella: Rhizopus is filamentous fungi that have industrial importance and is responsible for diseases in plants and animals. They are saprophytic and feed on a variety of dead organic matter. Some of them are parasitic or pathogenic. Branching mycelium is found in the body that is made up of three types of hyphae: rhizoids, stolons, and sporangiophores. Chlorella is a type of algae that is a good source of protein, fats, carbohydrates, chlorophyll, vitamins, and minerals. It is useful in reducing the risk of anemia which is caused by two little iron in the body and taken by pregnant women. It is single-celled green energy which is spherical in shape and is without flagella.
So, the correct answer is 'Roundworm (Ascaris) and Hookworm (Ancylostoma).

Note: Nematodes can damage up to 30 to 80% of crop yields. The life cycle of nematodes can be shot as 18 to 21 days in warm soils. Soybean cyst nematodes are a threat to the yield of soybean. There are over 400 quintillion nematodes on earth which are often known as roundworm and aren't really worms.