Major Plant Organs and Tissue

Plant cells that are specialized for cell division are most likely found in what part of the plant?

• root tips
• leaf epidermis
• stem epidermis
• vascular tissue

 A plant, which sprouted from a seed, has a genetic mutation that keeps it from producing stomata. Is it likely that this plant will live and grow?

• a. Yes, because it will absorb carbon dioxide for photosynthesis through its roots.
• b. Yes, because it only needs stomata to decrease water loss in very hot weather.
• c. No, because it will not be able to move sugars to its roots without stomata.
• d. No, because it will not be able to carry out photosynthesis without stomata.

In plants, water can escape through the leaves by the process of transpiration. Which of the following structures are involved in transpiration?

• a.  xylem, phloem, stomata
• a.  root hairs, xylem, stomata
• a.  phloem, root hairs, xylem
• a.  stomata, phloem, root hairs

Which animal cells are most similar to that of Meristem cells in?

• embyronic stem cells
• macrophage cells
• motor neuron cells
• red blood cells

If a plant species lives in an area with limited sunlight, Which physiological adaptation would be most useful to the plant? 

• colorful flowers
• large leaves
• deep roots
• thin cuticle

In some flowers, the ovary is hidden deep within the base of the flower while the pollen is held up in the air, often near a source of nectar. How is this general design helpful to the plant?

• It keeps the pollen dry by exposing it to air while keeping the ovary moist
• a.  It makes it possible for seeds to develop both in the ovary and in the pollen grains.
• It encourages animals to carry pollen for cross-fertilization while leaving the ovary alone
• a.  It allows the plant to self-fertilize more easily since the pollen can drop into the ovary.

What role do flowers play in the survival of a plant? 

• Flowers can absorb carbon dioxide for sugar production. 
• Flowers produce oxygen through cellular respiration.
• Flowers contain cells that carry out photosynthesis.
• Flowers contain cells that produce gametes. 

 When Mr. Williams was mowing the yard, he accidentally hit a young tree with the mower and scraped off a large section of bark all the way down to the wood. Within a few days, leaves on several of the branches began to die. What is the most likely cause of the leaves dying?

• The leaves were diseased already, and they died coincidentally when the bark was injured.
• The wood was weakened by the injury and could no longer support the weight of the branches above it.
• The bark contained the xylem and phloem tubes and, once they were damaged, they could not feed the leaves.
• The vascular tissue under the bark was damaged and could no longer transport water and nutrients to the leaves.

Which structure is represented by the letter A in the diagram above?

• the stamen, a male structure which produces pollen
• the pistol, a female structure which collects pollen and passes it to the ovary
• the sepal, a modified leaf used for protection of the flower
• the petals, decorative structures which attract pollinators