Note:
a) Use space below for your answers.
b) Compare your answers with those given at the end of the lesson.
Classify the following items into living and non-living factors of the environment.
Neem tree, soil, gas, air, rose flower, butterfly, light, heat, humand being, cow and moisture
Give an example to show that non-living factors of the environment are dependent on its living factors.
Write the name of one terrestrial ecosystem and the name of one aquatic plant.
Check Your Progress 2
Note: a) Use space below for your answers.
b) Compare your answers with those given at the end of the lesson
Fill in blank spaces in the following sentences.
Plants are called -------- because they are able to use light energy from the Sun to produce food (sugar) from carbon dioxide and water.
Animals cannot make their own food so they must eat plants and/or other animals. They are called ------.
Animals that eat ------ ------- are called herbivores (or primary consumers).
Animals that eat ---- ------ are called carnivores.
Carnivores that eat herbivores are called ------- consumers.
Carnivores that eat other carnivores
are called ------ consumers.
Animals and people who eat ---- animals and plants are called omnivores.
Then there are ------- (bacteria and fungi) which feed on decaying matter.
Note: a) Use space below for your answers.
b) Compare your answers with those given at the end of the lesson
i. Which of the following constitute a food chain?
Grass, wheat and mango
Grass, goat and human
Goat, cow and elephant
Grass, fish and goat
What makes a food web?
Note: a) Use space below for your answers.
b) Compare your answers with those given at the end of the lesson
Who would you find at the first trophic level?
Which trophic level is occupied by the herbivores or the primary consumers?
Why does biomass of each trophic level decrease from the base of the food chain to the top?
Note: a) Use space below for your answers.
b) Compare your answers with those given at the end of the lesson
i) Select and mark either ‘true’ or ‘false’ in front of the following statements.
An organism cannot enter in more than one food chain. True or F alse
In any food chain, in comparison to larger carnivores the number of organisms is lesser at different trophic levels? True or False
Plants are called producers because they can reproduce new plants. True or False
In biosphere, flow of energy occurs through the process of photosynthesis. True or False
Aquarium is an example of human-made ecosystem. True or False
Note: a) Use space below for your answers.
b) Compare your answers with those given at the end of the lesson
Will the levels of bio-magnification be different at different levels of the ecosystem?
What is the main problem caused by the non-biodegradable wastes that we generate?
Which of the following groups contain only bio-degradable items?
Grass, flower and leather
Grass, wood and plastic
Fruit-peels, cake and lime juice
cake,wood and grass
Check
Your Progress 7
Note: a) Use space below for your answers.
b) Compare your answers with those given at the end of the lesson.
Answer the following questions.
i. If all the waste we generate is biodegradable, will this have no impact on our environment?
ii. Is there an alternative to using ordinary electricity bulb for saving energy and the environment?
iii. Is it possible to recycle paper waste that is generated daily in great quantity in schools?
iv. Is it a good idea to burn the garden waste in order to get rid of it?
v. Should the local government authority insist on children going to schools, which are located within walking distance from their homes? If yes, explain why this is so and if no, give your reasons for considering it a bad idea.