Angel International School - Manipay 2 nd Term Examination March, 2016

Transcription

1 Grade 07 Angel International School - Manipay 2 nd Term Examination March, ) The diagram shows an arthropod. Biology Duration: 2 Hours Index No:- How many pairs of jointed legs does this arthropod have? a) 2 b) 20 c) 21 d) 40 2) Keys are used in biological identification. Which statement may appear in a key and alone could identify one of the plants in the diagrams? a) The plant has a single deep root with small branches. b) The plant has many similar roots, arising from a single point. c) The plant has one flower on the stem. d) The plant has pointed leaves. 3) Which series of terms is listed in order of increasing level of organization? a) cell organ tissue organ system b) cell tissue organ organ system c) tissue cell organ organ system d) tissue organ organ system cell 4) Which is a tissue and which is an organ? 1

2 5) The diagram shows six cells. Which are plant cells and which are animal cells? 6) In which order does water pass through these tissues in a plant? a) mesophyll xylem root b) root mesophyll xylem c) root xylem mesophyll d) xylem mesophyll root 7) The diagram shows a section through a flower. After the flower is fertilized, which parts will develop into the fruit and the seed? a) 1 b) 2 c) 3 d) 4 8) The diagram shows a food web. What type of organism is X? a) a carnivore b) a decomposer c) a herbivore d) a producer 2

3 9) A food chain shows how organisms depend on each other for their sources of energy, but all energy comes ultimately from one source. What is this energy source? a) Leaves of plants c) Sunlight b) Meat d) Water 10) The diagram shows the external features of an animal. To which class does it belong? a) Amphibians b) Fish c) Mammals d) Reptiles 11) The diagram shows an arthropod. To which group does it belong? a) Annelids b) Arachnids c) Insects d) mammals 12) The diagram shows a student s drawing of guard cells. Which label line is incorrect? 13) The diagram shows structures that form the surface of the trachea. Which level of organization is the structure labeled S? a) Cell b) Organ c) organ system d) tissue 14) The graphs show the changes in the populations of predator and prey over a period of time. Which point on the graph shows a decrease in predator population? 3

4 15) In a pyramid of numbers, what does the top of the pyramid represent? a) Carnivores c) Herbivores b) Decomposers d) Sun 16) The three-toed sloth is a mammal that lives in the forests of Central America. Sloths are eaten by wild cats such as jaguars and also by snakes. The sloths mainly eat leaves. What is the original source of the energy supplied to the jaguars? a) Leaves c) Snakes b) Sloths d) Sun 17) Which is a tissue and which is an organ? 18) The diagram shows a cell seen under the light microscope. Which labels are correct? 19) Which is not under mammal? a) Rodents b) Whales c) Dolphin d) Annelid 20) Which of the following statement is not correct? a) Food chains always start with plant b) Rabbit is a herbivore c) The arrow in a food chain can point in any direction d) Carnivorous birds and mammals share an adaptation (30 marks) 4

5 Part -2 1) The diagram shows a small animal. a) What are the types of key? (2) b) What is the use of the key? (1) c) Name the below key : (1) d) Use the key to identify the animal. 1. has wings... go to 2 has no wings... go to 3 2. has one pair of legs per segment... A has two pairs of legs per segment... B 3. has one pair of antennae... C has two pairs of antennae....d (6) e) Use the key to identify the following plants Start Leaf divided into five lobes Leaf not divided into five lobes Sycamore Edge of leaf smooth Edge of leaf not smooth Privet A =.. Edge of leaf rounded Edge of leaf toothed B=. C= D =.. (4) Silver birch Oak (14 marks) 5

6 2) Use this food chain to answer the questions below Pond weeds tadpole diving beetle pike a) What does the arrow between each living thing mean? b) What actually passes down the food chain energy or Emma B? c) What usually happens to the numbers of the living things as you go down the chain? d) What usually happens to the size of the living things as you go down the chain? e) Name the producer in this food chain f) Name the tertiary consumer in this food chain g) Name the top carnivores in this food chain h) Name two predators in this food chain i) Name two living things in the food chain that are prey to predators j) Name the primary consumers in the in this food chain (10 marks) 3) The diagram below shows a food web. \ 6

7 a) How many tertiary consumers are shown? b) What would happen if. A. All the blue tits suddenly died? B. All of the ladybirds vanished? C. All of the rabbits were killed by a nasty disease called myxomatosis? D. All the baby owls failed to hatch this year? (10 marks) 4) For each living thing, write down the feature that helps it survive in a changing environment: Living thing feature that helps it to survive A. Ptarmigan root act as a stabilizer B. camel produce heavy seed C. Tawny owl shaped wing feathers D. Bat roost in day time E. Rabbit sandy skin colour to get camouflage F. Roe deer pointed teeth like miniature crocodile G. shrew brown plumage get camouflage in winter H. Hawks hooked beaks I. Frogbit eyes are side of the head J. Duck weed make a coat with short hair in summer (10 marks) 5) A. Classification is what scientists use to sort living things into groups. All living things are first divided into kingdoms. a) What is kingdom? (2) b) What are the kingdoms? (3) c) What are the subgroups of kingdom? (3) d) What are seven characteristics of life? (4) 7

8 B. The animal kingdom may then be divided up into those with back bones and those without backbones. a) What do we call animal with backbones? (1) b) What are the phyla contain backbone? (3) c) What do we call animals without backbones? (1) d) Which phylum has backbone? (1) C. Different species do not breed together normally. But when they do they produce offspring that are usually sterile. a) What you meant by sterile? (1) b) Give an example? (1) (20 marks) 6) Say whether the differences show discontinuous or continuous variation. i) Height : ii) Blood group: :. iii) Shoe size : iv) Hair colour : v) Body mass : vi) Eye lobes :. (6 marks) ***** 8