Science Week Two
What is the smallest unit of life?
the cell
All cells contain four major structures. What are they?
cell membrane cytoplasm nucleus vacuole
What is a storage space in the cytoplasm of a cell that contains fluid called?
vacuole
What is a small structure that controls everything the cell does called?
nucleus
What is the soft, flexible covering of a cell that allows things to enter and leave the cell?
cell membrane
Which of the following, a dog or the sunlight, is a biotic factor shown in the picture above?
dog
Is the stream or the grass an abiotic factor shown in the picture above?
stream
What are living organisms too small to be seen without a 10x magnifier?
microorganisms
The pond ecosystem shown above includes a number of different types of mammals, reptiles, amphibians, birds and fish. All of these groups make up the ecosystem’s___.
community
White tailed deer in a forest, all rainbow trout in a stream, or all bald cypress trees in the swamp are examples of a_______________.
population
What is a group of different kinds of populations called?
community
WatertemperatureSoilAnimalsPlants temperatecool season and warm season fertile soil many mammals, birds, reptiles, insects deciduous trees Based on the description in the chart above which ecosystem is being described, a forest or a salt marsh?
forest
WatertemperatureSoilAnimalsPlants completely wetcool to coldsand bottomfish sea mammals algae seaweed Described above in the chart is the most common ecosystem on earth. Which ecosystem is it?
ocean
What are the areas where fresh water rivers meet the oceans?
estuaries
Which ecosystem contains sparse vegetation, sparse animals such as insects, arachnids, reptiles and birds and mostly sand and rocks?
desert
An example of a grassland food chain: SunGrassGrasshopperToadSnakeHawk ProducerConsumer Which member of the food chain above is an herbivore?
grasshopper
The snake and toad shown above fill what two roles?
predator- prey
What is the only member of this food chain that is a producer?
grass
What is left out of the food chain?
decomposers
What is an organism that spends most of its time living in or on a host organism, usually causing harm to the host without immediately killing, called?
parasite
What is the relationship between the number of organisms and the resources available in an ecosystem called?
balance of nature