Download App

Organisms and Populations — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations3 Marks
Question
Explain brood parasitism with the help of an example.
✓

Answer

  1. Brood parasitism refers to the phenomenon in which a (parasitic) bird species lays its eggs in the nest of another (host) bird species and lets the host incubate them.
  2. The eggs of the parasitic bird must have evolved resemblance to the eggs of the host in size and colour to reduce the chances of the host bird detecting the foreign eggs and ejecting them from the nest, e.g. the cuckoo lays its eggs in the nest of a crow.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions in detail." from Organisms and Populations→Organisms and Populations — all question types→BIOLOGY STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Answer the following questions:
Mention any four strategies adopted by flowering plants to prevent self-pollination.
→
What are endocrine glands?
→
A population of Paramoecium caudatum was grown in a culture medium. After 5 days the culture medium became overcrowed with Paramoeium and had depleted nutrients. What will happen to the population and what type of growth curve will the population attain? Draw the growth curve.
→
(a) What is composition of bio-gas?
(b) Mention any four benefits of bio-gas.
→
One of the twins born to parents having normal colour vision was colour blind whereas the other twin had normal vision. Work out the cross. Give two reasons how it is possible.
→
With the revolution in information technology, now it has become an integral part of everybody's live, living in rural and urban India. You are asked to address the gathering of students of eco-clubs of your neighbourhood schools on generation and management of e-waste.
  1. Write how e-waste is generated.
  2. Explain how would you address the awareness issue of e-waste management amongst the students.
  3. How have the developed countries exploited the developing countries with respect to e-waste managements?
→
Explain two ways of 'improper resource utilization' that can cause degradation of natural resources.
→
A woman has certain queries as listed below, before starting with contraceptive pills. Answer them.
What do contraceptive pills contain and how do they act as contraceptives?
→
Write a note on implantation.
→
What is humus? Mention its properties.
→