Plant Biology Quiz

What is turgor pressure?

• The pressure exerted by the fluid outside the cell against its cell wall.

• The pressure exerted by the mitochondria inside the cell.

• The pressure exerted by the nucleus inside the cell.

• The pressure exerted by the fluid inside the cell against its cell wall.

Which of the following is an example of positive geotropism in plants?

• Sideways growth of roots

• Downward growth of roots

• Upward growth of roots

• No growth of roots

What is the main function of positive geotropism in roots?

• To help the roots grow downwards into the soil

• To help the roots grow sideways

• To help the roots grow upwards towards the sunlight

• To help the roots grow in a spiral pattern

Which of the following is an example of negative geotropism in stems?

• Stem growing downwards towards the light

• Stem growing horizontally towards the light

• Stem growing towards gravity

• Stem growing upwards towards the light

What is the main function of negative geotropism in stems?

• To protect the stem from harsh weather conditions.

• To help the stem absorb nutrients from the soil.

• To prevent the stem from growing towards the light source.

• To allow the stem to grow against gravity and towards the light source.

Which of the following is NOT a subtopic of this quiz?

• Types of questions in the quiz

• None

• Subtopics of the quiz

• Colors of the quiz interface

What happens to turgor pressure when a plant cell loses water?

• Turgor pressure remains the same

• Turgor pressure decreases

• Turgor pressure is not related to water loss

• Turgor pressure increases

Which of the following is NOT a factor that affects turgor pressure?

• Temperature

• Cell wall rigidity

• Water availability

• Light intensity

What is the purpose of turgor pressure in plant cells?

• To facilitate cell division in plant cells.

• To protect plant cells from pathogens.

• To regulate water uptake in plant cells.

• To maintain cell shape and rigidity.

Which of the following is an example of positive geotropism in stems?

• Plant shoot growing towards gravity

• Plant shoot growing horizontally

• Plant shoot growing away from sunlight

• Plant shoot growing towards sunlight