Grade 7 Science Final Examination (2O24)

What do legumes have on their roots?

• A. nodules full of seeds
• B. nodules full of carbon dioxide
• C. nodules full of trace gases
• D. nodules full of nitrogen fixing bacteria

Which layer of the soil profile contains a soil layer of rock?

• A
• B
• C
• D

Which part of the plant has chlorophyll?

• A. roots
• B. flowers
• C. petals
• D. leaves

What is the organelle called that contains chlorophyll?

• A. mitochondria
• B. chloroplast
• C. cell membrane
• D. nucleus

Which organelles are found only in plant cells? Select all that apply.

• A. cellulose (cell wall)
• B. cytoplasm
• C. nucleus
• D. vacuole
• E. chloroplast

_____________ is the scientist who saw small chambers when looking at cork, and named them "cells"?

• A. Captain Hook
• B. Robert Hooke
• C. Matthias Schleiden
• D. Rudolf Virchow

The process of breaking up rock on Earth's surface is called?

• A. sediment
• B. weathering
• C. erosion
• D. deposition

_____________ is the process that plants use to make food.

• A. respiration
• B. photosynthesis
• C. nitrogen- fixation
• D. chemical reaction

Which component of the soil has the lowest rate of permeability? (hint: holds onto water)

• A. clay
• B. silt
• C. sand
• D. none of the above

Why is topsoil darker than all other level of soil?

• A. It contain all the darker colored minerals
• B. It contains volcanic rock
• C. lt contains bit of burned trees
• D. It contains more organic matter