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(A) : Brood parasitism is a social paras...

(A) : Brood parasitism is a social parasitism among birds.
(R) : Koel lays its eggs in the crow's nest.

A

If both (A) and (R) are true but (R) is not the correct explanation of (A).

B

If both (A) and (R) are true and (R) is the correct explanation of (A).

C

If (A) is true but (R) is false.

D

If both (A) and (R) are false.

Text Solution

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The correct Answer is:
B
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Brood parasite is

In Brood parasitism :

Koel or Cuckoo lays eggs in the nest of

Read the following statements and select the correct option. Statement 1: Brood parasitism in birds is an example of parasitism in which the parasitic bird lays its eggs in the nest of its host and the host incubates them. Statement : During the course of evolution, the eggs of the parasite bird have evolved to resemble the host's eggs in size and colour to reduce the chances of the host bird detecting the foreign eggs and removing them from the nest.

What is a Brood parasitism is Birds ?

Which of the following statement/s is/ are WRONG ? I. Mammals from colder climates generally have shorter ears and limbs to minimise heat loss. II. The UV component of the spectrum is harmful to many organisms. III. The tiger census in our national parks and tiger reserves is often based on actual headcounts. IV. Some desert plants like Opuntia,have no leaves - they are reduced to spines. V. In brood parasitism , the parasitic bird lays its eggs in the nest of its host and does not allow the nest incubate them.

I. The human liverfluke, a nematode parasite depends on two intermediate hosts (snail and pig) to complete is life cycle II. The malaria parasite needs a vector (mosquito) to spread to other hosts III. The female mosquito is not considered parasite, however it needs out blood for repreduction. IV. In case of brood parasitism the eggs of parasitic birds (e,g cuckoo) are not detected and ejected from the nest because of parasite's eggs resemble the hosts eggs in morphology and colour V. A population of frogs protected from all predators would increase indefinately Which statements are correct ?

Bombyx mori lays its eggs on the leaves of tree

What is Brood parasitism ? Give one example of brood parasitism.

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