Plant Parts and Function; Photosynthesis & CR

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

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-LS1-6

What is the main function of leaves?

• Leaves provide support for growth and a place to store food.
• Leaves provide a place for photosynthesis to occur
• Leaves absorb water and minerals and transport nutrients to the stem.
•  Leaves create a barrier that prevents water in the plant's tissues from evaporating.

Tags

NGSS.MS-LS1-6

Which structure in the leaf controls the opening and closing of the stoma? 

• cuticle
• epidermis
• guard cell
• spongy mesophyll

The diagram 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

NGSS.MS-LS2-3

The process of water loss in a plant

• respiration
• photosynthesis
• osmosis
• transpiration

If photosynthesis is like cooking the food, then _______ is like eating the food. It's the opposite of photosynthesis; getting energy from a chemical reaction.

• transpiration
• respiration
• osmosis
• diffusion

The waxy layer on a leaf that helps to prevent water loss.

• epidermis
• palisade layer
• cuticle
• mesophyll

The layer in the leaf where the cells are overloaded with chloroplasts. Just below the epidermis.

• cortex layer
• palisade layer
• mesophyll layer
• spongy layer

The internal tissues of a leaf

• cortex
• palisade layer
• spongy layer
• mesophyll