NAME: ………………………………………………………………………. FORM: ……………………….. ECOLOGY Study Pages 30 – 33 of your manual and the relevant chapters in your textbook before answering these questions. 1. Terms used in Ecology (NB: Terms may consist of two words but no space is left between them when completing the crossword) ACROSS 2 Eats only animals (secondary consumers, tertiary consumers and up). 6 A diagram showing overlapping food chains. 8 A group of organisms of the same species in a particular place. 11 The position of an organism in a food chain. 12 Eats plants and animals (primary or secondary consumer). 13 A diagram used to show feeding relationships between organisms. 15 An organism that feeds on other organisms (i.e. it feeds heterotrophically). 16 An influence on an organism caused by another organism. DOWN 1 The place where an organism lives. 3 Describes the living and non-living factors which affect an organism.
ECOLOGYStudy Pages 30 – 33 of your manual and the relevant chapters in your textbook before answering these questions.
1. Terms used in Ecology(NB: Terms may consist of two words but no space is left between them when completing the crossword)
ACROSS 2 Eats only animals (secondary consumers, tertiary consumers and up). 6 A diagram showing overlapping food chains. 8 A group of organisms of the same species in a particular place. 11 The position of an organism in a food chain. 12 Eats plants and animals (primary or secondary consumer). 13 A diagram used to show feeding relationships between organisms. 15 An organism that feeds on other organisms (i.e. it feeds heterotrophically). 16 An influence on an organism caused by another organism. DOWN 1 The place where an organism lives. 3 Describes the living and non-living factors which affect an organism. 4 An influence on an organism caused by a non-living feature of its environment. 5 An organism that makes its own food (i.e. it feeds autotrophically, these are usually plants). 7 The study of how living organism interact with their environment. 9 Eats only plants (primary consumer). 10 Several populations living together in a particular place. 14 The role of a living organism in a community.
2. Look at this food chain.
a. What does the arrow mean in the food chain? _________________________________________
b. Name the producer in the food chain.__________________________
c. Name the secondary consumer in the food chain. _________________________
d. What is the ultimate source of energy that drives this food chain? _______________________
3. Draw a food chain that includes a slug, fox, leaf, and frog. Clearly show the title and trophic levels.
4. a. Use the food chains shown below to draw a food web.
b. Identify one herbivore in the food web. ________________________
c. Identify one carnivore in the food web. ________________________
d. Even though no decomposers are shown in the food web above, they are an important part of all
food webs. Describe the role of decomposers in a food chain / food web.
8. Read the information below. Decide what type of symbiotic relationship the two organisms have and write the answer on the line.
Ostriches and gazelles eat next to each other. They both watch for predators and danger. Since they see things differently, they each can identify threats the other animal may not see
A cow walks through the grass, insects fly up and are seen, and eaten, by egrets (birds).
A flea feeds on a dog’s blood.
Oxpecker birds get a good meal by eating the ticks found on a rhinoceros
A cuckoo bird may lay its eggs in a warbler’s nest. The cuckoo’s young will kick out the warbler’s young and will be raised by the warbler.
Mistletoe takes water and nutrients from the spruce tree.
Remora fish attach themselves to a shark’s body. They then travel with the shark and eat scraps from the shark’s meals. This neither harms nor helps the shark.
EXCERPT FROM THE CCSLC INREGRATED SCIENCE TEXTBOOK
SOIL PROJECTSubmit a report on soil. Your report should follow the format below. Use pictures/diagrams where possible.
TITLE PAGE – NAME, DATE, TEACHER, TITLE OF PROJECT
INTRODUCTION – Define the term soil. Briefly describe how it is formed.
DISCUSSION
- State the main components of soil and their functions. - Name the three main types of soil. Compare the texture/particle size, water holding capacity, air content
and drainage of the three main types of soil.- Name common organisms present in the soil. - Discuss the importance of soil for: plants, human beings, other organisms and the environment in
general. - Describe any three of the following soil conservation methods - contour ploughing, terracing, strip
CONCLUSION – Reflect on what you have learnt about soils.
CCSLC PLANNING AND DESIGN SBA (To be completed on a separate sheet of paper.)
NAME:
PROBLEM: A farmer has found that his competitor’s bean plants germinate faster than his own. The farmer believes that his competitor uses a different type of soil to germinate his bean plants. Design an experiment to determine if changing a particular component of soil can affect the rate of germination of bean seedlings.
HYPOTHESIS: If the soil contains more … then the seedlings will germinate faster.
AIM: To determine if … (This must be based on the hypothesis.)
APPARATUS AND MATERIALS: List all equipment and substances needed.
METHOD: To be written as step by step (numbered) instructions. Clearly describe the composition of the soil used. Repeat experiment to ensure reliable results.
CONTROLLED VARIABLES: Things kept constant during the experiment to ensure that a fair test is done.
EXPECTED RESULTS: What is expected to happen if the hypothesis is true?
LIMITATIONS: Factors which could not be controlled that could result in inaccurate results.
