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7th Grade Science
Ecology 7th Grade Science
| Question | Answer |
|---|---|
| Less suited species will adapt move from the area or die out. This is known as _______. | the competitive exclusion principle |
| What area of the ocean will have the most oxygen and nutrients? | An area near the surface and close to the shore. |
| What will happen if two species occupy the same niche? | The two species will compete with each other One species will out-compete the other One species may go extinct |
| List some abiotic factors? | Sunlight , Climate, Soil, Water and Air. |
| 10 spiders/ square meter is an example of? | Population Density |
| Leaf insects take on the appearance of a leaf. This is an example of_____. | camouflage |
| What type of relationship exists between Cattle Egrets and cattle or horses? | Commensalism |
| What is the main factor defining the differences of biomes? | The climate. |
| What is the coldest of all biomes? | The tundra |
| Competition between two kangaroos over a common mate would be _________. | intraspecific competition |
| What type of relationship exists between the clown fish and the sea anemone? | Mutualism |
| An example of a keystone species... | Wolves, because they control the deer and rabbit populations |
| A population with equal birth and death rates will ______. | remain the same size |
| A true statement about altricial organisms. | Altrical birds are usually born blind and without feathers. |
| When graphed, exponential growth looks like a ______. | J-shaped curve. |
| Some Biotic factors of a rainforest are...... | frogs, rabbits and trees |
| The flow of energy within an ecosystem refers to_____________-. | who is eaten by whom |
| Once a niche is left vacant what happens? | A new species evolves to fill the niche. |
| A desert biome can be described as ____. | has less plants than the rain forest, has drier soil than many other biomes and has less preipitation than many other biomes. |
| In aquatic biomes, photosynthesis occurs in the _____. | photic zone. |
| What type of relationship exists between hookworms and humans? | Parasitism |
| Some species of non-poisonous frogs have similar bright colors as poisonous frogs. This is an example of_______. | mimicry |
| A population of mostly young organisms and a high birth rate will _______. | grow in size |
| What happens to population growth as a resource becomes less available? | Exponential growth becomes logistic growth |
| These are all examples of ecosystems. | Yellowstone National Park The Great Barrier Reef The Savanna |
| What is the type of symbiotic relationship where only one species benefits? | Commensalism |
| What traits may help an organism be an effective hunter? | Camouflage, Speed and good sense of smell and or sight. |
| Abiotic factors are necessary for a thriving ecosystem. T/F | True |
| Parasites usually kill their host. T/F | False |
| An aquarium is its own ecosystem. T/F | True |
| Only 2 species at the most can have the same habitat. T/F | False |
| Aquatic biomes in the ocean are called marine biomes. T/F | True |
Created by:
cromine