526: In the human body, which structure is the appendix attached to ?
(a) The gall bladder
(b) The large intestine
(c) The stomach
(d) The small intestine
527: Which one of the following is cultivated by transplanting seedlings ?
(a) Maize
(b) Sorghum
(c) Onion
(d) Soyabean
528: What would happen if phytoplankton of an ocean is completely destroyed for some reason?
1. The ocean as a carbon sink would be adversely affected.
2. The food chains in the ocean would be adversely affected.
3. The density of ocean water would drastically decrease.
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 2 only
(c) 3 only
(d) 1, 2 and 3
Explanation:
Phytoplankton crete organic compounds from the atmospheric carbon dioxide. Hence, they act as carbon sink. Phytoplankton are a key food item in both aquaculture and mariculture. Both utilize phytoplankton as food for the animals being farmed. Phytoplankton is cultured for a variety of purposes, including foodstock for other aqucultured organisms, a nutritional supplement for other aquacultured organisms, a nutritional supplement for captive investebrates in aquaria. If phytoplankton is completely destroyed then the primary producer of the Food-chain will get completely destroyed. Other then that the phytoplanktons also absorb heavy amount of CO2 in the process of Photosynthesis.
529: What is the average fat content of buffalo milk ?
(a) 7.2%
(b) 4.5%
(c) 9.0%
(d) 10.0%
530: Given below is a diary of disasters involving hazardous chemicals. Which one of the following is correctly matched?
(a) 1959, Minamata/Nigiata, Japan: Leakage at pesticide plant
(b) 1976, Sevesor Italy: Mercury discharged into waterways
(c) 1984, Bhopal, India: Leakage of dioxin
(d) 1987, Kotka, Finland: Monochloro-benzene split In harbour