Q14. With reference to food chains in ecosystems, consider the following statements: 1. A food chain illustrates the order in which a chain of organisms feeds upon each other. 2. Food chains are found within the populations of a species. 3. A food chain illustrates the numbers of each organism which are eaten by others. Which of the statements given above is/are correct?

With reference to the food chains in ecosystems, which of the following kinds of organism is/are known as decomposer organism/organisms? 1. Virus 2. Fungi 3. Ba

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 c

Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences? 1. Pollination of s

Consider the following statements: 1. The boundaries of a National Park are defined by legislation. 2. A Biosphere Reserve is declared to conserve a few specifi

Consider the following statements: 1. The boundaries of a National Park are defined by legislation. 2. A Biosphere Reserve is declared to conserve a few specifi

In the context of ecosystem productivity, marine upwelling zones are important as they increase marine productivity by bringing the: 1. Decomposer microorganism

There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why? 1. They c

With reference to perfluoroalkyl and polyfluoroalkyl substances (PFAS) that are used in making many consumer products, consider the following statements: 1. PF

Consider the following kinds of organisms: 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers in the food chains

Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for the generation of energy 2. Viruses can be cultured in any synthetic med

Consider the following statements: 1. Lions do not have a particular breeding season. 2. Unlike most other big cats, cheetahs do not roar. 3. Unlike male lions,

Which one of the following is the best description of the term ‘ecosystem’?

With reference to the provisions made under the National Food Security Act, 2013, consider the following statements : 1. The families coming under the category

Consider the following statements in respect of probiotics: 1. Probiotics are made of both bacteria and yeast. 2. The organisms in probiotics are found in food

With reference to “Gucchi” sometimes mentioned in the news, consider the following statements: 1. It is a fungus. 2. It grows in some Himalayan forest areas. 3.

Which of the following are nitrogen-fixing plants? 1. Alfalfa 2. Amaranth 3. Chickpea 4. Clover 5. Purslane (Kulfa) 6. Spinach Select the correct ans

In nature, which of the following is/are most likely to be found surviving on a surface without soil? 1. Fern 2. Lichen 3. Moss 4. Mushroom Select th

Which of the following are detritivores? 1. Earthworms 2. Jellyfish 3. Millipedes 4. Seahorses 5. Woodlice Select the correct answer using the code g

In which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrients to enter the cycle?

Which of the following have species that can establish a symbiotic relationship with other organisms? 1. Cnidarians 2. Fungi 3. Protozoa Select the c

With reference to the water on the planet Earth, consider the following statements: 1. The amount of water in the rivers and lakes is more than the am

Which of the following leaf modifications occur(s) in the desert areas to inhibit water loss? 1. Hard and waxy leaves 2. Tiny leaves 3. Thorns instead

The term ‘M-STrIPES’ is sometimes seen in the news in the context of