Midyear Science DA

DJ was so frustrated with his test grade that he started ripping up his paper. He didn't think that was enough so then he set it on fire. What kinds of changes are these?

• Ripping the paper and burning it are both physical changes. 
• Ripping the paper is a physical change and burning the paper is a chemical change. 
• Ripping the paper is a chemical change, and burning it is a physical change. 
• Both of them are chemical changes. 

You are looking at a living organism. It has what looks like smooth skin and is standing near the small pond in your backyard. What can you conclude from this information?

• It is an amphibian because it has smooth skin and lives in water for the first 80 days of it's life. 
• It is a fish because it is near water. 
• It is a mammal because mammals need water and nutrients. 
• It is a bird because bird's need water to live. 

Vertebrate animals that nurse babies from mammary glands, have hair and are born alive are called _____________.

• Reptiles
• Birds
• Mammals
• Amphibians

How could you tell that a plant is a seed producer?

• It will have fruit, pollen or spores on it. 
• It will be low to the ground.
• It will only have flowers on it. 
• It will be very tall. 

Redwood trees can grow to be very tall because they are __________.

• Vascular
• Deciduous
• Nonvascular
• Flowering

The first animal does not live in the water and has rough scaly skin. The second animal has fur and does not lay eggs. What are examples of these two animals?

• frog and penguin
• ladybug and moose
• snake and pig
• toad and human

A student watched a plant grow taller and taller in their yard. They decided to water the plant with red water. What will happen to the roots and stems of the flower?

• The roots and stems will stay the same color. 
• The roots and stems will turn red because it is vascular. 
• The roots and stems will change red because they are NONvascular. 

Vascular plants have to transport food and water through their cells, and not through a tube transportation system. 

• True
• False

The ___________ is the basic unit of life

• organ
• cell
• atom
• tissue

Which organelle is only found in a plant cell? 

• nucleus
• chloroplast
• mitochondria
• cell membrane