Plants Review

The internal transport of water and minerals in plants requires the two systems to work together. Which diagram correctly describes how the two systems accomplish this?

• F
• G
• H
• J

Tags

NGSS.MS-LS2-3

Which of the following best describes the interaction that occurs between a plant’s reproductive parts during self-fertilization?

• Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches the filament, where the sperm fertilizes the egg. 
• Pollen moves from the ovule up through the style and is released from the stigma. The pollen is transferred to the anther, where the sperm fertilizes the egg.
• Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary, where the sperm fertilizes the egg.
• Pollen is released from the stigma and is transferred to the anther. A pollen tube grows down from the anther through the filament and fuses with the ovule, where the sperm fertilizes the egg. 

Which structure regulates gas exchange during the processes of photosynthesis and respiration?

• R
• Q
• S
• T

Tags

NGSS.MS-LS1-6

Gardeners routinely plant Clematis vine plants and train them to climb on trellis structures.

This directional response of a plant organ to touch or to maintain physical contact with a solid object is called?

• Gravitropism
• Thigmotropism
• Phototropism
• Nastic Movement

Which of the following characteristics could help short plants survive in areas with limited sunlight?

• Broad leaf surfaces
• Brightly colored flowers
• Thick stems
• Shallow roots

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Some mesquite trees have deeper roots than any other plant in the desert. How are deep roots an adaptation for survival in the desert?

• Deep roots can protect the tree from predators.
• Roots encounter cooler conditions far below the desert surface.
• Roots can extend great distances to reach water.
• Deep roots interact with beneficial bacteria below the surface.

Tags

NGSS.MS-LS2-1

Cacti grow slowly compared to most other plants. The fact that cacti keep their stomata closed for much of the day can help explain this growth characteristic. Which of these best explains the advantage of keeping stomata closed during the day?

• It limits water loss through transpiration.
• It conserves oxygen produced in photosynthesis.
• It recycles carbon dioxide within plant systems.
• It protects plant tissues from predators.

Tags

NGSS.MS-LS1-5

Species of the genus Toxicodendron, which includes poison ivy and poison oak, produce a gummy oil that causes a severe itchy rash in some animals. This substance is part of the Toxicodendron species’—

• defense mechanisms
• nutritional processes
• support system
• clinging ability

Plant leaves have a waxy covering called a cuticle. When some plants are stressed by lack of water, their cuticle increases in thickness. What does this action demonstrate?

• Alternation of generations in plants
• Structural response to the environment
• Differentiation of vascular tissue in plants
• Genetic mutation induced by the Environment

Tags

NGSS.MS-LS1-5

What is the structure on top of a leaf that protects a leaf from drying out?

• Stomata
• Cuticle
• Stem
• Casparian Strip