Final Exam. in Botany

Which of the following is responsible for the exchange of gases between the plant and the atmosphere during photosynthesis?

• primary and secondary meristems 
• xylem and phloem 
• guard cells and stomata
• cambium and epidermis 

Plants need carbon and oxygen to produce glucose during photosynthesis. How do most plants obtain these elements?

• They take in carbon dioxide dissolved in water through the roots and transport them using xylem.
• The take in carbon dioxide in the air through the stomata of the leaves.
• They absorb carbon monoxide (CO) through respiration.
• They absorb carbon (C) from the soil and oxygen (O₂) from the air.

What cells allow the stomata to open and close

• Body Cells
• Pressure Cells
• Guard Cells
• Rhizoids

Sunlight, Water and __________ are needed to conduct photosynthesis?

• Oxygen
• Carbon Dioxide
• Sugar
• Atoms

If a plants xylem were destroyed it would hinder its ability to...

• Absorb water from soil
• Absorb water from leaves
• Absorb sunlight
• Conduct water to the leaves

Pollen grains are produced by...

• Male reproductive structures
• Sporophytes
• Ovules
• Female reproductive structures

Angiosperms produce seeds protected inside 

• Cones
• Flowers

What purpose do roots serve?

• To store nutrients
• To conduct Water
  To absorb water
• To conduct photosynthesis
• To grow 

The purpose of the cuticle is to 

• nourish the plant
• reduce evaporation of fluids
• aid in reproduction 
• allow it to live under water

The main function of the stem is to 

• Store water
• transport substances between roots and leaves
• Store carbohydrates
• Carry out photosynethesis