Plant Test

Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower. Which table correctly identifies the function of each structure or group of structures in the reproduction of the plant?

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Cytokinins are a class of plant hormones that help regulate growth by promoting cell division. Cytokinins are produced mainly in meristematic tissue, where most plant growth occurs. Which system carries cytokinins produced in the roots to the rest of the plant?

• Shoot system

• Dermal system

• Reproductive system

• Vascular System

Plants called sundews have rounded green leaves with many hair-like structures. The ends of these structures contain enzymes in a sticky liquid that looks like nectar or moisture, as shown in the picture. The hairs do not react to dust or nonliving material but will bend inward when insects get caught in the sticky liquid. Sundews digest trapped insects over a period of a few days.

Based on this information, what functions do the specialized leaves of sundews perform?

• Provide water to the plant and perform photosynthesis

• Respond to stimuli and anchor the plant

• Provide nutrients to the plant and respond to stimuli

• Release pollen to insects and perform photosynthesis

Turgor is the internal cytoplasmic pressure that results from the amount of water absorbed by plant cells. The picture shows a turgor pressure demonstration using stalks of celery in different salt solutions. Which of these shows the celery stalks in order from the one with the most turgor pressure to the one with the least turgor pressure?

• Q, R, S, T

• R, S, T, Q

• S, R, T, Q

• T, Q, R, S

What do phototropism and gravitropism enable plants to do?

• Prevent invasion by insect colonies

• Grow toward needed resources

• Respond to stimuli aggressively

• Defend themselves against herbivores

An example of _________________ is when a plant starts to coil around another type of plant.

• positive hydrotropism

• positive thigmotropism

• negative phototropism

• positive gravitropism

Which statement best describes the relationship between the products of photosynthesis and the reactants in cellular respiration?

• The products of photosynthesis serve as the reactants in cellular respiration to provide chemical energy.

• The products of photosynthesis combine with the reactants in cellular respiration to remove ATP from cells.

• The products of photosynthesis inhibit the reactants in cellular respiration in the presence of light.

• The products of photosynthesis change the structure of the reactants in cellular respiration in the presence of light.

In living organisms, cells can be organized into tissues, tissues into organs, organs into systems, and systems work together to keep the organism alive. The three principal organs of seed plants, like conifers and flowering plants, are —

• roots, leaves, and flowers

• stems, roots, and leaves

• stems, fruits, and flowers

• stems, roots, and fruits

Structures represented in the illustration below are found in the lower epidermis of a plant leaf. The illustration at right shows the response to a certain environmental condition. The response represented in the illustration would most likely be caused by —

• a reduced supply of oxygen

• long periods of rainfall

• high concentrations of glucose

• little available water

Copper is a micronutrient that can be found in soil. Copper is important for reproductive growth in plants and plays an indirect role in chlorophyll production. Which statement correctly describes the interaction that occurs between the root and the shoot systems of plants to allow reproduction to occur?

• Copper is produced in the roots when copper-containing compounds are hydrolyzed.

• Copper that is absorbed by the roots is transported to reproductive tissues by the shoot system.

• The shoot system stores copper for later use by the roots and the reproductive structures.

• The shoot system transports copper to the roots after it is taken in through stomata in the leaves.