AIPMT 2010 Biology
Q. 29. The kind of epithelium which forms the inner walls of blood vessels is :
- cuboidal epithelium
- columnar epithelium
- ciliated columnar epithelium
- squamous epithelium
Answer: (4)
Q .30. Which one of the following has its own DNA?
- Mitochondria
- Dictyosome
- Lysosome
- Peroxisome
Answer: (1)
Q .31. Select the correct statement from the following:
- Biogas is produced by the activity of aerobic bacteria on animal waste
- Methanobacterium is an aerobic bacterium found in rumen of cattle
- Biogas, commonly called gobar gas, is pure methane
- Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
Answer : (4)
because small amounts are used as inoculum in secondary treatment or biological treatment stage of sewage treatment.
Q .32. Study the four statements (a − d) given below and select the two correct ones out of them:
- A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers
- Predator star fish Pisaster helps in maintaining species diversity of some invertebrates
- Predators ultimately lead to the extinction of prey species.
- Production of chemicals such as nicotine, strychnine by the plants are
metabolic disorders
The two correct statements are:
- (b) and (c)
- (c) and (d)
- (a) and (d)
- (a) and (b)
Answer: (4)
Q .33. Breeding of crops with high levels of minerals, vitamins and proteins is called:
- Somatic hybridisation
- Biofortification
- Biomagnification
- Micropropagation
Answer: (2)