science icon Name ________________________________

1.
Which segment on the right could be used to correctly complete the DNA molecule in the diagram above?
O   a. Segment A
O   b. Segment B
O   c. Segment C
O   d. Segment D

Use the pyramid to answer questions 2 and 3.
2. Which level of this food pyramid repressents the largest biomass?
O   a. Bass
O   b. Minnows
O   c. Copepods
O   d. Algae

3. Which organisms are the primary consumers on this pyramid?

O   a. Bass
O   b. Minnows
O   c. Copepods
O   d. Algae

All the organisms shown belong to the Phylum Chordata. Use the drawing to answer questions 4 and 5.
4. The structural similarity in the organisms suggests that
O   a. the humerus is attached to the skeleton by immovable joints
O   b. only animals that walk on 4 legs need the numerus
O   c. the humerus is the same size in all chordates
O   d. chordates have common ancestors

5. Fish are members of the Phylum Chordata, but are not shown on the drawing. That is probably because

O   a. fish live in water
O   b. fish don't have bones
O   c. fish don't have a humerus
O   d. the maker of the drawing forgot to add them

6. The cucumber belongs to the Cucurbitacae family and is recognized by its long, trailing vines and fuzzy, three to five pointed leaves and ling, spiny fruit.

Using the characteristics in this chart, which plant is most closely related to the cucumber?

O   a. eggplant
O   b. pumpkin
O   c. pepper
O   d. okra