Plant

Nonvascular plants are not as common or as widespread as vascular plants because

• nonvascular plants are small
• the life functions of nonvascular plants require a close associatoin with water
• nonvascular plants are limited to dry habitats
• none of the above

T/F A pollen grain is a structure that includes sperm cells, nutrients, and a protective outer  covering

• True
• False

The outer covering of a plant consists of

• ground tissue
• vascular tissue
• dermal tissue
• meristematic tissue

Regions of active cell division in plants are called

• phloem
• meristems
• xylem
• dermal tissue

The xylem in a plant

• transports sugars
• transports water and minerals
• exchanges carbon dioxide and oxygen with the atmosphere
• None of the above

Terrestrial plants have stomata on the surface of their leaves. A single stomata is surrounded by two guard cells that change shape in response to environmental factors and open or close the stoma. Which of the following best explains how the structure of the leaf is used in processes that occur in plants? 

• Water enters the plant through the surface of the leaf for transpiration
•  Gases for photosynthesis are exchanged through the surface of the leaf.
• Energy for cellular reproduction is absorbed through the surface of the leaf.
• Carbon dioxide enters the plant through the surface of the leaf for cellular reproduction.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The cambuim is a section of cells in a plant that can become either part of the xylem or phloem, depending on the growth and needs of the plant. If the cambium of a particular plant was damaged, what would be the most likely effect on the plant?

•  The plant would lose its ability to carry out photosynthesis.
•  The plant would have uncontrolled growth.
•  The plant would not experience any change in physiology.
•  The plant would not be able to transport nutrients and water

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The diagram below shows a cross section of a plant leaf. How does the structure marked X contribute to the survival of the plant?

•  It allows the intake of gases necessary for photosynthesis.
•  It allows the intake of minerals necessary for plant growth.
• It allows the intake of sunlight necessary for ATP production.
•  It allows the intake of sugars necessary for plant reproduction.

Tags

NGSS.MS-LS1-6

The diagram represents a flower, the reproductive structure of some plants. Most flowers have both male and female structures for fertilization and reproduction. Which structure is represented by the letter A in the diagram?

•  the stamen, a male structure which produces pollen
• the pistil, 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