All India Institute of Medical Sciences 2008 - Question Paper

d. an opening in the mega gametophyte through which the pollen tube approaches the egg.
Sol. In gymnosperms, beneath micropylar beak a few of the cells of nucellus of ovule disintigerate to form pollen chamber. accurate choice: (3)
Q.17. Spore dissemination in a few liverworts is aided by:
a. peristome teeth
b. elaters
c. indusium
d. calyptra
Sol. In a few liverworts like Marchantia spore dispersal is due to hydrochasy and is aided by elaters. accurate choice: (2)
Q.18. Which pair of the subsequent belongs to Basidiomycetes?
a. Morchella and Mushrooms
b. Birds’ nest fungi and Pufballs
c. Pufballs and Claviceps
d. Peziza and Stink horns
Sol. Bird’s nest fungi – Cyathus, Pufballs – Lycoperdon, Both belong to the class Basidiomycetes. accurate choice: (3)
Q.19. ICBN stands for:
a. Indian Code of Botanical Nomenclature
b. Indian Congress of Biological Names
c. International Code of Botanical Nomenclature
d. International Congress of Biological Names
Sol. ICBN is 1 of the codes of nomenclature. It stands for International Code of Botanical Nomenclature. accurate choice: (3)
Q. 20. Ergot of rye is caused by a species of:
a. Claviceps
b. Phytophthora
c. Uncinula
d. Ustilago
Sol. Ergot of rye is caused by Claviceps purpurea. accurate choice: (1)

Q. 21. When 2 species of various genealogy come to resemble every other as a outcome of adaptation, the phenomenon is termed:
a. Convergent evolution
b. Divergent evolution
c. Microevolution
d. Co-evolution
Sol. accurate choice: (1)
Q. 22. Adaptive radiation refers to:
a. Power of adaptation in an individual to a variety of environments
b. Adaptations due to Geographical isolation
c. Evolution of various species from a common ancestor
d. Migration of members of a species to various geographical areas
Sol. accurate choice: (3)
Q. 23. The residing organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for:
a. growth the movement
b. responsiveness to touch
c. interaction with the environment and progressive evolution
d. reproduction
Sol. accurate choice: (4)
Q. 24. The Finches of Galapogas islands give an evidence in favour of:
a. Biogeographical Evolution
b. Special Creation
c. Evolution due to Mutation
d. Retrogressive Evolution
Sol. accurate choice: (1)

Earning:   Approval pending.