Leaf Structure

Leaf Structure

Multiple Choice

This layer of cells is where photosynthesis occurs within the leaf; there are air spaces within this layer

• spongy mesophyll

• palisade mesophyll

• chloroplast

• upper epidermis

Multiple Choice

The outermost layer of CELLS of the leaf is the

• cuticle

• epidermis

• spongy mesophyll

• bundle sheath

Multiple Choice

Which part of the leaf consists of xylem and phloem?

• vascular bundle

• bundle sheath

• palisade mesophyll

• spongy mesophyll

Multiple Choice

Which number is pointing to the xylem of the leaf?

• 3

• 4

• 5

• 6

Multiple Choice

What is letter "D" pointing to?

• upper epidermis

• palisade mesophyll

• spongy mesophyll

• bundle sheath

Multiple Choice

The column-like cells that lie directly underneath the epidermis makes up the

• spongy mesophyll

• palisade mesophyll

• cuticle

• bundle sheath

Multiple Choice

What is the name of the elongated, packed cells (part G) directly under the upper epidermis?

• Palisade cells

• Guard cell

• Spongy layer

• Lower epidermis

Multiple Choice

The water needed for photosynthesis comes into the leaves through the

• upper epidermis
• stomata
• guard cells
• xylem cells

Multiple Choice

The important gases, carbon dioxide and oxygen, enter and leave the leaf through the

• upper epidermis
• phloem
• stomata
• guard cells

Multiple Choice

The leaf has a shiny, waxy cuticle around it to

• increase the rate of photosynthesis
• attract more light
• control water loss
• stop carbon dioxide and oxygen gases escaping

Multiple Choice

The structure of guard cell ......

• has a small sap vacuole

• has thicker outer wall & thinner inner wall

• is a specialised mesophyll cell

• are kidney shape and exist in pairs

Multiple Choice

Where are the stomata found on the leaf?

• On the cuticle
• In the mesophyll layer
• On the underside of the leaf
• In the vascular tissue

Multiple Choice

Leaves will have the highest number of stomata when

• temperatures are unusually high and CO2 levels are also high

• temperatures are low and CO2 levels are also low

• temps are high and CO2 levels are low

• temps are low and CO2 levels are high

Multiple Choice

A stoma is

• an opening

• a clot

• a cell that captures light energy

• a water tube

Multiple Choice

The main function of stomata is to

• capture sunlight

• protect leaves from insects

• allow gases to move rapidly in/out of leaves

• release sugars into the atmosphere

Multiple Choice

Stomata are made of specialized cells called ______ which surround a tiny pore/opening

• stoma

• guard cells

• dermal cells

• diffusion channels

Multiple Choice

Which organisms perform Photosynthesis?

• Only Autotrophs
• Only Heterotrophs
• Autotrophs and Heterotrophs

Multiple Choice

How does carbon dioxide get into the leaves of a plant?

• It's absorbed by the roots
• It's made in a chemical reaction in the stem
• It enters through the stomata
• It goes through the flowers

Multiple Choice

How does most of the water needed by the plant get into its leaves?

• It enters through the stomata

• The roots absorb it and then it travels up the stem

• It's made during a chemical reaction in the leaf

• The flowers capture water and deliver it to the leaves

Multiple Choice

Is Glucose (C₆H₁₂O₆) a Raw Material (Ingredient) or Product of Photosynthesis?

• Product

• Raw Material

• Neither

Multiple Select

Select all that are raw materials for Photosynthesis.

• Water

• Carbon Dioxide

• Oxygen

• Sunlight (Light Energy)

• Glucose (Sugar/food)

Multiple Choice

Most plants appear green because chlorophyll

• absorbs green light.
• absorbs violet light.
• does not absorb green light.
• does not absorb violet light.

Multiple Choice

What are the products of photosynthesis?

• water and carbon dioxide
• oxygen and glucose
• oxygen and carbon dioxide
• oxygen and water

Multiple Choice

What molecule absorbs sunlight for photosynthesis?

• chloroplast
• thylakoid
• grana
• chlorophyll