Which of the following uses a parasitic nutritive strategy?
I. Cuscuta
II. Ticks
Show answer & explanation
Correct answer: C
Explanation
Correct Answer: Option 3: Both I and II
Explanation:
Parasitic nutrition is the process in which one organism (parasite) obtains its food from the body of another living organism (host) without killing it.
Cuscuta: It is a yellow, thread-like parasitic vine that absorbs nutrition from other plants.
Ticks: These are external parasites that survive by feeding on the blood of animals and humans.
Additional Facts:
Types of parasites: There are two types—endoparasites (such as intestinal worms/Ascaris) that live inside the body, and ectoparasites (such as lice, ticks) that live outside the body.
Harm: Parasites always harm their host, weakening it.
Other examples: Plasmodium (malaria parasite), tapeworms, and lice.
Possible questions for the upcoming exam:
Plasmodium, which spreads malaria, is an example of which type of nutrition?
(Answer: Parasitic nutrition).
What special organ does the dodder use to absorb its food?
(Answer: Haustoria or haustoria).
What is the main difference between saprotrophic and parasitic nutrition?
(Answer: Saprotrophs feed on decaying matter, while parasites feed on living organisms).