Science Edited By Able Exercise @ 2015 ABLE EDUCATION CENTRE UNIT 2 EXPLORING THE LIVING WORLD A Multiple-choice questions 1 Which of the following animal(s) became extinct because of human activities? (1) Dodo bird (2) Tasmanian tiger (3) Giant panda (4) Dinosaur A (1) only B (3) only C (1) and (2) only D (2) and (4) only 2 Which of the following statements about an endangered species is correct? A It is dangerous to humans. B It is nearly extinct. C It is unable to reproduce. D It does not have enough food to eat. www.ableeducation.com.hk https://sites.google.com/site/ableexercise/ Science Edited By Able Exercise @ 2015 3 Which of the following activities can destroy natural habitats? (1) Building reservoirs (2) Building houses (3) Cutting trees for timber (4) Setting up wildlife reserves A (1) and (2) only B (2) and (4) only C (1), (2) and (3) only D (2), (3) and (4) only *4 The easiest way to determine whether an animal is dead or not is to A check whether it can eat food. B check whether it can react to stimuli. C check whether it can move. D check whether it can reproduce. 5 Which is the most suitable feature that can classify the following three flowers into two groups? A Number of petals B Shape of petals C Size of stamen D Size of flower Science Edited By Able Exercise @ 2015 6 Which of the following statements about the two animals below is/are correct? (1) They belong to the same group because they have fin-­‐like structures. (2) They belong to different groups because they use different organs to breathe. (3) They belong to the same major group because they have backbone. A (1) only B (1) and (2) only C (2) and (3) only D (1), (2) and (3) 7 Which of the following endangered species can be found in the countryside of Hong Kong? (1) Black-­‐faced spoonbill (2) Crocodile (3) Giant Panda (4) Romer’s tree frog A (1) and (3) only B (1) and (4) only C (2) and (3) only D (1), (2) and (3) www.ableeducation.com.hk https://sites.google.com/site/ableexercise/ Science Edited By Able Exercise @ 2015 8 Which of the following is the effect of accumulation of high concentration of pesticide in the bodies of eagles? (1) They may lay fewer egg. (2) They may have diseases more easily. (3) They may get more nutrients. A (1) and (2) only B (1) and (3) only C (2) and (3) only D (1), (2) and (3) 9 Which of the following methods are possible to save endangered species from extinction? (1) Set laws to ban the trading of the products made from endangered species. (2) Set reserve areas to protect the habitats of endangered species. (3) Do research on the biology of endangered species to help them reproduce. (4) Keep all endangered species in zoos to protect them. A (1) and (2) only B (2) and (4) only C (1), (2) and (3) only D (2), (3) and (4) only 10 Which of the following features can separate a class of students into two clear-­‐cut groups? A The presence of ear lobe B Weight C Hand span D Height Science Edited By Able Exercise @ 2015 B True or false questions 1 An animal which has scales is a reptile. 2 Plants use their leaves to excrete wastes. 3 Blood group, eye colour and intelligence vary among different people. Therefore, we can be divided into clear-­‐cut groups based on these differences. 4 An animal that has no hair but has milk glands is a mammal. 5 The backbone of vertebrates is used for supporting the body. www.ableeducation.com.hk https://sites.google.com/site/ableexercise/ Science Edited By Able Exercise @ 2015 C Fill-in-the-blanks 1 Snakes live in the forest, so the forest is the ______________ of snakes. 2 _______________ live in water when young and live on land when they grow up. 3 The most distinct body feature of birds is _____________. 4 The process of removing body wastes is known as ______________. 5 Ferns, fungi and pines can be grouped together into _______________ plants. Science Edited By Able Exercise @ 2015 D Short questions 1 Use the following key to identify the animal below. List the steps. 1a 1b With shell -­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐ go to 2 Without shell -­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐ go to 3 2a 2b Shell divided into 2 parts -­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐ Clam Shell divided into more than 2 parts -­‐-­‐-­‐-­‐-­‐ Chiton 3a Body flattened -­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐ Slug 3b Body elongated, cylindrical -­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐ Sea cucumber www.ableeducation.com.hk https://sites.google.com/site/ableexercise/ Science Edited By Able Exercise @ 2015 *2 List two features that can distinguish the following animals from each other. Science Edited By Able Exercise @ 2015 3 Crocodile Flamingo Chimpanzee Hawk Put a ‘ √ ’ in the suitable box if the above animals have the corresponding body features. Crocodile Flamingo Chimpanzee Hawk Scales Hair Wings www.ableeducation.com.hk https://sites.google.com/site/ableexercise/ Science Edited By Able Exercise @ 2015 *4 Write down the name and the body features of the animal shown below from the key. Elongated body No segment With segments Nematode Body dry Body wet Each segment with 1 Each segment with 2 pair of legs pairs of legs Centipede Millipede 5 What can you do with an empty plastic bottle to help conserve the environment? Science Edited By Able Exercise @ 2015 E Long questions *1 Four types of plants are shown in the following photographs. A B C a D Which of the above plants is/are non-­‐flowering plants? b Which of the above plant(s) produce(s) seeds for reproduction? c Compare the shape and size of the leaves of plants A and C. Ed Make a simple key to identify these plants (A-­‐D). www.ableeducation.com.hk https://sites.google.com/site/ableexercise/ Science Edited By Able Exercise @ 2015 2 The following two photographs show a man and a chimpanzee. Man Chimpanzee a Both of them belong to the same group of animals. Name this group of animals. b With reference to the photographs, explain why these two animals belong to the same group. c State the difference between them in their ways of movement. d In what way are these two animals similar in caring their own children? Science Edited By Able Exercise @ 2015 *3 The following photographs show five kinds of plants, A to E, and a key is made to classify these plants into different groups. A B C D E Plants A to E With flower Without flower 5 petals 4 petals Group 4 Petals with some Petals without overlapping overlapping Stamen large Group 3 Stamen not obvious Group 1 Group 2 www.ableeducation.com.hk https://sites.google.com/site/ableexercise/ Group 5 Science Edited By Able Exercise @ 2015 a Name group 5. b Give an example of group 5 which does not have leaves. c Identify the groups to which plants A to E belong. d If you were an insect, which plant would you choose to get food. Give a reason.
