more Flashcards
(25 cards)
What are stomata?
Small openings on the surface of leaves that allow gas exchange.
What is the primary function of guard cells?
To regulate the opening and closing of stomata.
True or False: Stomata are only found on the underside of leaves.
False.
Fill in the blank: Stomata allow _____ to enter and _____ to exit the leaf.
carbon dioxide; oxygen
What type of variables are independent and dependent variables?
Independent variables are manipulated, while dependent variables are measured.
Multiple choice: What do autotrophs primarily use to produce their own food? A) Other organisms B) Sunlight C) Organic material
B) Sunlight
What is the difference between autotrophs and heterotrophs?
Autotrophs produce their own food, while heterotrophs consume other organisms for energy.
True or False: Guard cells change shape to open and close the stomata.
True.
What environmental factors can influence the opening of stomata?
Light, humidity, and carbon dioxide concentration.
Fill in the blank: A microscope is an essential tool in _____ studies.
biological
Multiple choice: Which part of the plant primarily contains stomata? A) Roots B) Stems C) Leaves
C) Leaves
What is the role of stomata in photosynthesis?
They allow carbon dioxide to enter the leaf for photosynthesis.
True or False: The number of stomata can vary between different plant species.
True.
What happens to guard cells when water levels in the plant are low?
They close the stomata to conserve water.
Fill in the blank: Stomatal density can be affected by _____ conditions.
environmental
What is a controlled variable in an experiment?
A variable that is kept constant to ensure a fair test.
Multiple choice: Which of the following is a characteristic of heterotrophs? A) They produce their own food B) They rely on other organisms C) They perform photosynthesis
B) They rely on other organisms
What is the main purpose of stomatal closure?
To reduce water loss during dry conditions.
True or False: Microscopes can be used to study the structure of stomata.
True.
Fill in the blank: The process of _____ involves the conversion of light energy into chemical energy.
photosynthesis
What is the significance of stomata for plant respiration?
They allow oxygen to exit and carbon dioxide to enter during respiration.
Multiple choice: Which type of variable is manipulated in an experiment? A) Dependent B) Independent C) Controlled
B) Independent
What is the impact of increased carbon dioxide levels on stomatal opening?
It generally leads to increased stomatal opening.
True or False: Guard cells are specialized epidermal cells.
True.
