7th Grade - Adaptations
Quiz by Carolina Carner
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16 questions
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- Q1Many animals have developed eyes to be able to see things in their environment. This helps them catch prey, see mates, or avoid running into objects. However, most types of moles have very small eyes and poor eyesight. Moles spend most of their time underground, burrowing through the earth. What is the best explanation why moles have small eyes and poor eyesight?Moles are attracted to mates with smaller eyesThere is no light underground, so only minimum sight is necessary for molesMoles normally eat only small insects and so only need small eyes to spot the insectsMoles have small eyes due to disease.30s
- Q2Cactus plants live in dry environments such as deserts. They store water in their thick leaves and stems in order to survive. However, animals also require water and eat the cactus as a way of gaining water. Cactus plants have adapted by growing spines all over their bodies. How might this adaptation help the cacti survive?The spines protect the cactus plants as they stop animals from eating the cactusCactus plants lose water through the spines and so animals no longer want to eat themAnimals prefer to eat spines rather than a whole cactus and so the plant does not die30s
- Q3The acacia tree in the savannah plains of Africa has large thorns mixed with its leaves. How might this adaptation be an advantage for the tree?The thorns attract animals, such as pollinators, to the tree’s leavesThe thorns encourage animals to eat the tree’s seedsThe thorns stop animals, such as elephants, from eating the tree’s leaves30s
- Q4Some plant seeds, like dandelions, are attached to stems with light, fluffy threads. This is an adaptation for what likely purpose?Seed dispersal by wind currentsProtect against being eatenAvoid drowning by floating on water surfaces30s
- Q5The picture above shows four varieties of the same species of grass that grow in a prairie ecosystem. Which variety has the best chance of surviving a long period of dry weather?Variety 3Variety 4Variety 2Variety 130s
- Q6The wormwood plant is known for having leaves that taste bitter and have a strong odor. How would these qualities enhance their survival?It would be less likely to be grown for use by humansIt would be less likely to be eaten by insectsIt would be more likely to repel other plants30s
- Q7Some of the individual members of a species of organism were moved to a new location that had different environmental conditions than their original location. According to the theory of natural selection, what could happen after many generations to the descendants of the organisms that had been relocated?The descendants would look the same as the original individuals because the environment does not affect how species look.The descendants would look the same as the original individuals because species do not change.The descendants could become a completely different species over time.30s
- Q8Some species of ground squirrels hibernate 5-6 months a year. Their temperature drops and their breathing and heart rate slow. How does hibernation help the ground squirrel to survive?the ground squirrel is protected from high temperaturesthe ground squirrel has less need of food for energy in hibernationthe ground squirrel grows larger during hibernation30s
- Q9A winter freeze killed all of the plants in a student’s garden. In the spring the student plants some new flowers in his garden. A couple of weeks later he is surprised because the daffodils he planted last year, and thought were dead, have started growing out of the soil. Daffodils are flowering plants that have a bulb. Explain how the daffodils survived when the other plants in the garden did not.The bulbs are full of food and are protected by the soil above them.They just got lucky and didn't freeze enough to die even though the bulb is on the ground.30s
- Q10The blood in fish gills flows in the direction opposite to the way the fish swims, what is the purpose of this structural adaptation in fish?The gills have finger like projections to grasp objects.The blood picks up a large amount of oxygen from the water.The blood does not have to move far in the fishThe gills help the fish move through the water.30s
- Q11How does the internal structure of this bone allow the bird to flyHollow and weighs lessFlexible and bends easySolid, sturdy and support a lot of weightSoft and stretches easily30s
- Q12What structure allows fish to survive in water?gillsscalestalehollow bones30s
- Q13Bird’s bones are hollow, while mammal bones are filled with marrow. What is the best explanation for the bird’s bone adaptation?Birds are not as heavy as mammals.Mammals need more support than birds.Mammals have to walk long distances and need more weight.Some birds need to fly long distances, therefore needing less weight.30s
- Q14The xylem of plants is the highway for water and minerals movement. Over time plants have adapted to become more efficient at transporting water. Which of the following would be the most beneficial adaptation that plants could make to their xylem cells?Allow water to flow to from the roots upward to the leaves of the plant. Needed for photosynthesis.Become water proof so that water does not leak out during transportMake water heavier and harder to transportAllow for CO2 to enter, for photosynthesis30s
- Q15In the celery lab what structure did the blue dye use to get to the leaves?cell wallxylemrootphloem30s
