What is a Plant?

What essential elements do all plants need to live?

• Air, water, nutrients, and sunlight

• Soil, seeds, flowers, and leaves

• Animals, insects, and other plants

• Carbon dioxide, oxygen, and sugar

Which special part of a plant cell is rigid and unbending, providing structure to the plant?

• Chloroplast

• Nucleus

• Cell wall

• Mitochondria

During photosynthesis, what do plants use and what do they produce?

• Inputs: Oxygen, sugar; Outputs: Sunlight, water, carbon dioxide

• Inputs: Sunlight, water, carbon dioxide; Outputs: Sugar, oxygen

• Inputs: Nutrients, air; Outputs: Water, sunlight

• Inputs: Leaves, roots; Outputs: Flowers, fruits

How do some carnivorous plants, like the Sundew, obtain extra nutrition in nutrient-poor soils?

• By growing taller to reach more sunlight

• By developing larger roots to absorb more water

• By trapping and digesting insects

• By forming symbiotic relationships with fungi

How does a Venus flytrap prevent its prey from escaping once caught?

• It releases a strong adhesive to glue the prey down.

• Its long guard hairs interlock across the top of the leaves.

• It quickly paralyzes the prey with a neurotoxin.

• The trap walls become too smooth for the prey to climb.

What is the primary purpose of sharp spines on a cactus?

• To help the plant absorb more nutrients from the soil.

• To deter animals from consuming the water stored in its stems.

• To provide structural support for the plant in windy conditions.

• To attract specific pollinators to its flowers.

What defense mechanism does the sensitive plant employ when its leaves are touched?

• It emits a loud warning sound to scare off predators.

• It rapidly grows new, tougher leaves to replace the old ones.

• Its leaves fold inward and droop, making the plant appear dead or wilted.

• It releases a chemical that causes a burning sensation to the touch.

Which of the following is a common method plants use to have animals disperse their seeds?

• Animals intentionally plant the seeds in new, fertile ground.

• Animals eat fruits containing seeds, which are then passed unharmed in their waste.

• Plants produce seeds that are too heavy for animals to carry far.

• Animals use the seeds to build their nests, inadvertently spreading them.