WorksheetsGrade 7 Science Final Examination (2O24)
Total questions: 24
Worksheet time: 12mins
Name
Class
Date
1.
What do legumes have on their roots?
a)
A. nodules full of seeds
b)
B. nodules full of carbon dioxide
c)
C. nodules full of trace gases
d)
D. nodules full of nitrogen fixing bacteria
2.
Which layer of the soil profile contains a soil layer of rock?
a)
A
b)
B
c)
C
d)
D
3.
Which part of the plant has chlorophyll?
a)
A. roots
b)
B. flowers
c)
C. petals
d)
D. leaves
4.
What is the organelle called that contains chlorophyll?
a)
A. mitochondria
b)
B. chloroplast
c)
C. cell membrane
d)
D. nucleus
5.
Which organelles are found only in plant cells? Select all that apply.
a)
A. cellulose (cell wall)
b)
B. cytoplasm
c)
C. nucleus
d)
D. vacuole
e)
E. chloroplast
6.
_____________ is the scientist who saw small chambers when looking at cork, and named them "cells"?
a)
A. Captain Hook
b)
B. Robert Hooke
c)
C. Matthias Schleiden
d)
D. Rudolf Virchow
7.
The process of breaking up rock on Earth's surface is called?
a)
A. sediment
b)
B. weathering
c)
C. erosion
d)
D. deposition
8.
_____________ is the process that plants use to make food.
a)
A. respiration
b)
B. photosynthesis
c)
C. nitrogen- fixation
d)
D. chemical reaction
9.
Which component of the soil has the lowest rate of permeability? (hint: holds onto water)
a)
A. clay
b)
B. silt
c)
C. sand
d)
D. none of the above
10.
Why is topsoil darker than all other level of soil?
a)
A. It contain all the darker colored minerals
b)
B. It contains volcanic rock
c)
C. lt contains bit of burned trees
d)
D. It contains more organic matter
11.
How can farmers prevent/or slow down soil erosion?
a)
A. cover their crops with a tarp
b)
B. plant cover crops, plants, etc. to hold the soil in place
c)
C. water the soil everyday in order to weigh it down
d)
D. cut down all of the trees and crop
12.
Which substances are the products of photosynthesis?
a)
A. sugar, oxygen, and water
b)
B. sugar and water
c)
C. oxygen, carbon dioxide, water
d)
D. water and carbon dioxide
13.
What is the term for the organisms which pollinate flowers by moving pollen from the anther to the stigma?
a)
A. dispensers
b)
B. distributors
c)
C. insects
d)
D. pollinators
14.
All plants are classified based on...
a)
A. whether they have flowers or not
b)
B. whether they have cuticle or not
c)
C. whether they have vascular tissue or not
d)
D. whether they do photosynthesis or not
15.
What type of pollination is shown in this diagram?
a)
A. self-pollination
b)
B. single- pollination
c)
C. cross-pollination
d)
D. transfer pollination
16.
Identify the elements NPK used in fertilizers to help enrich poor soils?
a)
A. neon, phosphorus, and potassium
b)
B. neon, potassium, and krypton
c)
C. nitrogen, phosphorus, and potassium
d)
D. nitrogen, phosphorus, krypton
17.
Which of these is a method of seed dispersal?
a)
A. mechanical
b)
B. animal
c)
C. wind
d)
D. all the above
18.
All the layers of soil are together called a
a)
A. soil analysis
b)
B. soil profile
c)
C. subsoil
d)
D. top soil
19.
What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?
a)
A. assimilation
b)
B. fixation
c)
C. ammonification
d)
D. denitrification
20.
The cell theory states that_________
a)
A. all living things are composed of cells
b)
B. living cells come only form other pre-existing living cells
c)
C. cells are the basic unit of structure and function for life
d)
D. all of the above
21.
Which of the following is the correct order of soil particles in order of increasing particle size.
a)
A. clay, sand, silt
b)
B. sand, clay, silt
c)
C. silt, clay, sand
d)
D. clay, silt, sand
22.
What is called when plants give off water vapor as waste product?
a)
A. condensation
b)
B. evaporation
c)
C. sublimation
d)
D. transpiration
23.
A seed needs optimum conditions to germinate. What are they? Select all that apply.
a)
Sunlight
b)
Oxyen
c)
Water
d)
Right temperature
e)
Soil
24.
What organelle is know has the powerhouse of the cell?
a)
A. nucleus
b)
B. mitochondria
c)
C. golgi apparatus
d)
D. cytoplasm
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