OCR GCSE Science Questions PDF

1. What makes living things different from non-hvmg things? cientists distinguish i -livin sed on whether they carry out seven vital functions. These functions are necessary to maintain life. The seven vital functions of living things are: e Living things need food e Living things need oxygen e L...

1. What makes living things different from non-hvmg things? cientists distinguish i -livin sed on whether they carry out seven vital functions. These functions are necessary to maintain life. The seven vital functions of living things are: e Living things need food e Living things need oxygen e Livi ings o Living things move e Living things detect and rdact to stimuli o Living things excrete o Living things reproduce 2. What is biodiversity and why it is important? Thereisa isa w1de vanegy of lwmg thmgs mclgdmg varlgus ;ypes of anlmals plants and mlg:o orgamsms in natural emnronment s0 that it can be more sus;ama le. [t benefit humans by providing resources such as food, raw materials and medicines. 3. What are the different group of animals and plants? Animals can be classified into vertebrates and invertebrates. Vertebrates have a backboneand brates do not have one. Vertel ified i ive groups: fi ibi reptiles, birds and mammals. Plants can be classified into vascular plants and non-vascular plants. Vascular plants have vascular tissue: on-vascular plants do not have them. Vascular plants can be classified into seed pla: and seedless plants. roduce seeds and seedless plants do not. Seed plants can be classified into flowering plants and non-flowering plants. Flowering plants produce flowers and flowering plants do not. 4. Why is diversity reducing? Some human activities threaten the survival of living things and lead to a rapid reduction in biodiversity. These activities include: Destruction of ral habitats Overhunting and overexploitation of natural resources Introduction of forei ecies Pollution 5. How to maintain biodiversity? Conservation is necessary to maintain biodiversity. As citizens, we can do the following tips to h e 00 e o e conserve wildlife and the natural environment; Do not feed, disturb or collect wild animals and plants Do not leave litter in the countryside not e: ducts e fi red s Use resources that are obtdined in a sustainable way Takepart in conservation prograins such as beach clean-up and tree planting events Practice the 4Rs principle in daily lifeto reduce pollution.