B1- Topic 1 Flash cards about B1 - topic 1 4.0 / 5 based on 1 rating ? BiologyAdaptations of organisms to their environmentGCSEEdexcel Created by: odionj01Created on: 17-02-16 20:19 Name some features organsisms in the animalia kingdom have? heterotrophic, multicellular,no cell wall, no chloropyll 1 of 31 Name some features organsisms in the plantae kingdom have? autotrophic,chloropyll,multicellular,rigid cell wall 2 of 31 Name some features organsisms in the fungi kingdom have? saprophitic, multicellular, no chloropyll 3 of 31 Name some features organsisms in the proctotcista kingdom have? unicellular, have a nucleus e.g. algae 4 of 31 Name some features organsisms in the prokaryote kingdom have? unicellular, no nucleus e.g.bacteria 5 of 31 What is the main characteristic of orgainsms in the phylum chordata? They all have a supporting rod like structure that supports their body 6 of 31 what do all vertebrates have in common? backbone and internal skeleton 7 of 31 what does oviparous mean? Oviparous animals are animals that lay eggs and tend to fertilise externally 8 of 31 Example of an oviparous animals? fish, amphibians, reptiles, all birds 9 of 31 What does viviparous? They give birth to live young from their body and tend to fertilise internally 10 of 31 Define the word species? A species are organisms that can interbreed to produce fertile offspring 11 of 31 What is a hybrid? An offspring from two different species,they are usually infertile. 12 of 31 What is a ring species? A group of related populations that live in neighbouring areas, the areas they live determines if they can breed. 13 of 31 What is the binomial system? where each organism is given a two part name, the first part-genus, second-species 14 of 31 What are the two causes for variaton? Enviroment and Genes 15 of 31 What is genetic variation? The combination of genes from two parents 16 of 31 Describe another way genetic variation can occur? Mutations, a change in a persons gene causes differences in characteristics 17 of 31 What is continuous variation? Individuals in a population vary within a range, no distinct categories 18 of 31 What is discontinuous variation? where there are two or more distinct categories 19 of 31 Give an example of continuous variation? Height,weight, heart rate, finger length, hand span 20 of 31 Give an example of discontinuous variation? tongue rolling,finger prints,eye colour,blood groups 21 of 31 Name some ways the deep sea angler fish have adapted to their enviroment? rod shaped spine that gives out light, huge mouths to scoop up food, huge eyes 22 of 31 What are volcanic vents? vents in the seabed that send out hot water and minerals. 23 of 31 What is chemosynthesis? Bacteria can make their own food using chemical energy 24 of 31 State some ways polar bears have adapted to living in polar regions? thick hairy coats,large feet,white fur 25 of 31 What does Darwins theory of evolution state? Individuals with better adapted characteristics to the environment have a better chance of survival. 26 of 31 Why do the scientific community publish their work in scientific journals? if experiments is repeated and scientist gets similar results then the evidence is reliable. 27 of 31 Why do the scientific communitys work have to undergo peer view before its published? scientists check each others work to check if its valid. 28 of 31 Why do the scientific community have to hold scientific conferences? meetings where scientists attend to present and discuss work 29 of 31 What is speciation? The development of a new species, species become so different they can no longer breed to produce offspring. 30 of 31 what is isolation? populations of species are seperated an be by a physical barrier like a flood or earthquake 31 of 31
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