Science Week Two. What is the smallest unit of life?

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Presentation transcript:

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