Option “1” is correct. The pleural membrane is thin, moist, slippery and has two layers. The outer, or parietal, pleura lines the inside of the rib cage and the diaphragm while the inner, visceral or pulmonary, layer covers the lungs.
Option “2” is correct. Monocarpic plants are those that flower, set seeds and then die. They flower once in thier lifetime.
76. Which one of the following is a plant hormone?
1. Insulin
2. Thyroxine
3. Estrogen
4. Cytokinin
Option “4” is correct. The plant hormones are generally classified into five groups, These are: (i) Abscisic acid (ii) Auxins (iii) Cytokinins (iv) Ethylene (v) Gibberellins
77. Insulin is received from-
1. Rhizome of ginger
2. Roots of dahlia
3. Balsam flower
4. Potatoes tuber
Option “2” is correct. Insulin is a hormone which plays an important role in the regulation of blood glucose level. The main source in insulin from the roots of dahlias and Beta β-cells of the pancreas.
78. Which one of the following human organs is responsible for detoxification of alcohol?
1. Liver
2. Lung
3. Heart
4. Waist
Option “1” is correct. The liver is responsible for the detoxification of alcohol. Liver detoxify harmful substances through the complex chemical reactions.
79. The ‘blue baby’ pollution disease is due to the excessive presence of which of the following in drinking water?
1. Fluoride
2. Chloride
3. Nitrate
4. Arsenic
Option “3” is correct. Blue baby syndrome is an illness that begins when a large amount of nitrates in water are ingested by an infant and converted to nitrite by the digestive system.
Option “2” is correct. Karnal Bunt is a fungal disease caused by the smut fungus Tilletia indica. If affects the quality of wheat. It was first reported in 1931, infecting wheat growing near the city of Karnal, Haryana.
