By Judy Dodds
This ebook provides in a transparent visible means the biology fabric wanted for the technology and extra technology GCSE, and for the separate Biology GCSE. It additionally serves as an introductory consultant for AS Biology. it truly is illustrated all through with pictures and movement charts, with questions about each subject, web study actions and a word list of phrases to remember.
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Extra info for Biology at a Glance, Third Edition
Sample text
What do mice eat? 3. What eats winter moths? 4. Which is a predator? How do you know? 5. Name two primary consumers. 6. Name two secondary consumers. 46 Owl Shrews 7. How many tertiary consumers are shown in this web? 8. Describe the possible effects on the food web if the voles died. 9. Which animal is found at two feeding levels? 10. Write out the longest food chain present in this web. WOODLAND HABITAT An oak wood supports a varied community. g. oak, beech. Maximum light for leaves to photosynthesise at top of canopy, Herbivores eat the leaves and seeds.
7. 48 How much oxygen is in water compared to the air? Explain the distribution of plants. What three factors decrease as you go deeper in the water? Explain why mosquito larvae have an air tube. Where are stomata usually found in aquatic plants? How does this compare with land plants? How does haemoglobin help the bloodworm? How do reeds get oxygen to their roots which are under water? ANIMAL ADAPTATIONS 1. g. polar bear, reindeer, wolves, Arctic fox, brown bears. * Large size There are many celts making heat in respiration; these replace heat lost though the skin.
Explain why mosquito larvae have an air tube. Where are stomata usually found in aquatic plants? How does this compare with land plants? How does haemoglobin help the bloodworm? How do reeds get oxygen to their roots which are under water? ANIMAL ADAPTATIONS 1. g. polar bear, reindeer, wolves, Arctic fox, brown bears. * Large size There are many celts making heat in respiration; these replace heat lost though the skin. The adaptations of animals and plants determine their distribution and abundance.