The question asks to identify which of the given minerals are essential for muscle contraction in the human body. We need to recall the physiological roles of Calcium, Iron, and Sodium in muscle function.
Considering these roles, Calcium and Sodium are directly involved in the mechanism of muscle contraction, while Iron is indirectly essential for muscle function by facilitating oxygen supply.
Correct Option: D) 1, 2 and 3
All three minerals listed – Calcium, Iron, and Sodium – are required for the proper functioning of muscles. Calcium and Sodium are directly involved in the contraction mechanism and nerve impulse transmission, respectively. Iron is crucial for oxygen transport and storage, which is vital for muscle energy production and sustained activity.
The question asks us to evaluate two statements regarding wetlands in India. We need to determine which of these statements are factually correct based on available data and reports on wetlands in India.
A) 1 only — Statement 1 is correct because Gujarat has the largest wetland area among Indian states, as per official reports like the National Wetland Atlas. Statement 2 is incorrect because inland wetlands cover a larger geographical area than coastal wetlands in India.
| Wetlands | Confluence of rivers |
| 1) Harike Wetlands | Confluence of Beas and Satluj/Sutlej |
| 2) Keoladeo Ghana National Park | Confluence of Banas and Chambal |
| 3) Kolleru Lake | Confluence of Musi and Krishna |
The question asks us to identify the correctly matched pairs of wetlands and the confluence of rivers associated with them. We need to evaluate each pair individually based on geographical facts.
A) 1 only. Based on the analysis, only the first pair, Harike Wetlands and the confluence of Beas and Satluj, is correctly matched.
The question asks to identify the correct statement(s) about 'Wetlands International'. We need to evaluate each statement based on the organization's nature and functions.
B) 2 only — Statement 2 accurately describes the work of Wetlands International, which focuses on field-level action, knowledge mobilization, and policy advocacy. Statement 1 is incorrect because Wetlands International is an NGO, not an intergovernmental organization.
The question asks about the unique characteristics of the 'Kharai camel'. We need to evaluate each given statement based on known facts about this camel breed.
A) 1 and 2 only. Statements 1 and 2 accurately describe unique characteristics of the Kharai camel.
The question asks to identify the type of forest in India where teak is a dominant tree species. This requires knowledge of the characteristics and dominant tree species of different forest types found in India.
Correct Option: A) Tropical moist deciduous forest