(i) What is infertility? |
(ii) Test tube baby technique can solve infertility problem. Explain. |
Or |
(i) Cite some common causes of infertility in human females. |
(ii) What could be the effective preventive measures to avoid sexually transmitted diseases? |
(i) How would you encourage, satisfy or guide people around you about the importance of each and every organism present in the world? |
(ii) Also, mention the hypothesis which you will use to encourage them. |
(i) List any two situations in which preformed antibodies are given to a person. What kind of immunisation is it? Also, discuss its advantages. |
(ii) What is autoimmunity? |
(i) What is Nostoc? |
(ii) How does Nostoc help to increase the yield of paddy? |
(iii) What values were shown by Prakash? |
(i) Why did Avik's insist his father to smoke outside the house? |
(ii) Why should Avik father quit smoking? |
(iii) What values were shown by Avik? |
(i) mRNA and tRNA |
(ii) Repetitive DNA and satellite DNA |
Draw the labelled diagram of a mature embryo sac found in most of the flowering plants. |
Or |
Pollination acts as the phenomenon of transfer of pollen grains from anther to the stigma of either same plant or a different plant. What is the significance of this phenomenon? |
(i) Embryo sacs of some apomictic species appear normal but contain diploid cells. Suggest a suitable explanation for the condition. |
(ii) Why is the presence of both chasmogamous and cleistogamous flowers on the same plant beneficial? Explain with examples. |
Or |
In plants vegetative propagation occurs naturally also. Explain with the help of examples. Give its significances also. |
Give a detail account of evolution in plants and animals. |
Or |
Write short notes on the following: |
(i) Bioinformatics |
(ii) VNTRs |
(iii) Autoradiography |
(iv) Splicing |
(v) Capping |
(i) How ozone hole will affect our lives? |
(ii) Algal bloom is result of accelerated eutrophication. Explain. |
(iii) How is solid waste management being carried out? |
Or |
(i) State the consequences of the following components on the ecosystem. |
(a) all producers are removed. |
(b) all organisms of herbivore level are eliminated. |
(c) all top carnivores population is removed. |
(ii) Ecosystem services are the products of ecosystem process. Comment. |
You need to login to perform this action.
You will be redirected in
3 sec