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• AIPMT 2010 Biology

AIPMT 2010 Biology

  

Q. 89. Consider the following four statements (a − d) regarding kidney transplant and select the two correct ones out of these.

1. Even if a kidney transplant is proper the recipient may need to take immuno-suppresants for a long time
2. The cell-mediated immune response is responsible for the graft rejection
3. The B-lymphocytes are responsible for rejection of the graft
4. The acceptance or rejection of a kidney transplant depends on specific
   interferons
   The two correct statements are:
   (1) (b) and (c)    (2) (c) and (d)
    (3) (a) and (c)   (4) (a) and (b)

Answer: (4)

Q. 90. Wind pollinated flowers are:

1. small, brightly coloured, producing large number of pollen grains
2. small, producing large number of dry pollen grains
3. large producing abundant nectar and pollen
4. small, producing nectar and dry pollen

Answer: (2)

Q. 91.    dB is a standard abbreviation used for the quantitative expression of:

1. the density of bacteria in a medium
2. a particular pollutant
3. the dominant Bacillus in a culture
4. a certain pesticide

Answer: (2)

Q. 92. Which one of the following is one of the characteristics of a biological community?

1. Stratification
2. Natality
3. Mortality
4. Sex-ratio

Answer: (1)

Q. 93.    Which one of the following statements about morula in humans is correct?

1. It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA
2. It has far less cytoplasm as well as less DNA than in an uncleaved zygote
3. It has more or less equal quantity of cytoplasm and DNA as in uncleaved
   zygote.
4. It has more cytoplasm and more DNA than an uncleaved zygote

Answer: (1)