26095.Asthma may be attributed to:
accumulation of fluid in the lungs
bacterial infection of the lungs
allergic reaction of the mast cells in the lungs
inflammation of the trachea
Explanation:
Asthma is an allergic response leading to inflammatory disease of the airways with episodes of reversible over reactivity of airways smooth muscles.
Asthma is an allergic response leading to inflammatory disease of the airways with episodes of reversible over reactivity of airways smooth muscles.
26096.The standard petal of a papilionaceous corolla is also called:
Corona
Carina
Pappus
Vexillum
Explanation:
Papilionaceous corolla has one large posterior standard or Vexillum. In front of standard are two wing like alae and in the anterior region are two fused Carina.
Papilionaceous corolla has one large posterior standard or Vexillum. In front of standard are two wing like alae and in the anterior region are two fused Carina.
26098.It is much easier for a small animal to run uphill than for a large animal, because:
The efficiency of muscles in large animals is less than in the small animals.
It is easier to carry a small body weight.
Smaller animals have a higher metabolic rate
Small animals have a lower O2 requirement
26099.Following are the two statements regarding the origin of life:
(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements, which one of the following options is correct?
(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements, which one of the following options is correct?
Both (a) and (b) are false.
(a) is correct but (b) is false.
(b) is correct but (a) is false.
Both (a) and (b) are correct
26100.A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in:
Polyteny
Aneuploidy
Polyploidy
Somaclonal variation
Explanation:
Chromosome duplication without cell division results in polyploridy.
Chromosome duplication without cell division results in polyploridy.
26101.Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers:
Methane
Nitrous oxide
Ozone
Ammonia
Explanation:
Ozone layer protects us from UV rays that can be acarcinogen and cause skin cancer.
Ozone layer protects us from UV rays that can be acarcinogen and cause skin cancer.
26103.Which one of the following is the starter codon?
UAG
AUG
UGA
UAA
Explanation:
AUG is start codon that codes for Methionine whereas UGA, UAA and UAG are stop codons.
AUG is start codon that codes for Methionine whereas UGA, UAA and UAG are stop codons.