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Worksheets7th biology
Total questions: 15
Worksheet time: 10mins
Which of the following statements about the autotrophs is incorrect?
They synthesize carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll
They store carbohydrates in the form of starch
They convert carbon dioxide and water into carbohydrates in the absence of sunlight
They constitute the first trophic level in food chains
All these are examples of a chemical change EXCEPT....
Rusting metal
Boiling water
Burning paper
Rotting food.
Which characteristic does not apply to animals?
collagen
photosynthesis
digestive system
eukaryotic cell
Which includes both an abiotic and biotic factor?
a chicken laying an egg
a deer drinking from a stream
a squirrel eating an acorn
Which action recycles yard waste and kitchen waste?
composting
planting trees
using drip irrigation
It is a chemical that is produced by one animal and influences the behavior of another animal of the same species.
pheromone
bioluminescence
society
Different types of teeth are used to process different diets.
true
false
Gas exchange systems include lungs and gills.
true
false
All organisms are made of
organs
tissues
cells
Which scientist coined the term "cell"?
Schleiden
Schwann
Hooke
Van Leuwenhoek
