Which of the following is truly classified as a parasite?

  • A
    Female Anopheles bites and sucks blood from humans.
  • B
    Human fetus developing inside the uterus obtains nutrition from the mother.
  • C
    Head louse lives on the human scalp and lays eggs on human hair.
  • D
    Cuckoo lays its eggs in the crow's nest.

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Similar Questions

Match the following columns:
Column-$I$Column-$II$
$P$. Calotropis$I$. Special chemical
$Q$. Cactus and Acacia$II$. Camouflage
$R$. Monarch butterfly$III$. Thorns
$S$. Some species of insects and frogs$IV$. Glycosides

Observe the set of $4$ figures $A$,$B$,$C$ and $D$ and answer the following questions:
$(i)$ Which one of the figures shows mutualism?
$(ii)$ What kind of association is shown in $D$?
$(iii)$ Name the organisms and the association in $C$.
$(iv)$ What role is the insect performing in $B$?

Which one of the following is $INCORRECT$ about population interaction?

Differentiate between Commensalism and Mutualism.

Which of the following mechanisms helps organisms protect themselves from predators?

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