Biodiversity and Conservation — BIOLOGY STD 12 Science — Question

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?

Expand the following and explain any one of them:

1. IVF
2. ZIFT
3. MTP

Fertilisation is essential for production of seed, but in some angiosperms, seeds develop without fertilisation.
Explain the two ways by which seeds develop without fertilisation.

Explain three outbreeding devices.

Identify giving reasons, the salient features of genetic code by studying the following nucleotide sequence of mRNA strand and the polypeptide translated from it.
AUG UUU UCU UUU UUU UCU UAG
Met - Phe - Ser - Phe - Phe - Ser

1. Why are grasshopper and Drosophila said to show male heterogamity? Explain.
2. Explain female heterogamity with the help of an example.

Bee keeping practice is a good income generating industry. Write the different points to be kept in mind for successful bee keeping. Write the scientific name of the most common Indian species used for the purpose.

Explain how surrogacy is helpful in case of an infertile woman.

Classify the following as examples of homology and analogy:

(i)	Mouth parts of cockroach and butterfly
(ii)	Hearts of rabbits and human beings
(iii)	Eyes of octopus and mammals
(iv)	Sweet potato and potato
(v)	Stings of honey bee and scorpion
(vi)	Tendrils of Lathyrus and tendrils of Gloriosa

A criminal blew himself up in a local market when was chased by cops. His face was beyond recognition. Suggest and describe a modern technique that can help establish his identity.