Environment Quiz for Competitive Exams

In the laboratory, the pH of the soil solution is usually measured with a glass electrode. The soil sample is prepared with either water or a dilute salt solution, as the electrode measures only the acidity in the solution rather than the H+ ions present on the soil surface.

In the given food chain, producers will be the green plants. Insects will be considered as primary consumers, snakes will be secondary consumers and peacock at last will be considered as tertiary consumer. So, peacock will be at the apex of the food pyramid as it is the ultimate or end consumer.

Sequence of communities during hydrarch succession are as follows: Phytoplankton stage (Volvox) → submerged plant stage (Hydrilla) → submerged free floating plant stage (Pistia) →reed-swamp stage (Scirpus) → marsh-meadow stage (Lantana) → woodland stage → climax forest (Oak).

The correct answer is the World Economic Forum. Global Gender Gap Index: It is released by World Economic Forum which is an annual report.

The correct answer is option 1, i.e Sathyamangalam Tiger Reserve.

It was formed as the Genetic Engineering Approval Committee and was renamed to its current name in 2010. It functions under the Ministry of Environment, Forests & Climate Change.

So, Amla, spinach and jaggery are a group of eatables each member of which is rich in iron.

Explanation: Roots are the underground structures that help in the absorption of water and minerals, provide a proper anchorage to the plant parts, store reserve food material (Carrot, Radish), and synthesize PGR (plant growth regulators). Sometimes roots get modified to perform different functions like Storage of food, respiration, climbing, etc. These types of roots are called modified roots. Examples - prop root of the Banyan tree for providing support, Pneumatophores of Rhizophora, and Mangrove plants for respiration. So, these statements are correct. A. To give support to the plant. C. To store food. D. To absorb water and minerals.

The Andaman and Nicobar Islands have a combination of mangrove forest, evergreen forest, and deciduous forest, making it a unique region of India with diverse flora and fauna.

An ecosystem is a community of living organisms (plants, animals and microbes) in a particular area. The term `eco' refers to a part of the world and `system' refers to the co-ordinating units. An ecosystem is a community of organisms and their physical environment interacting together.