Quiz about Leaf

Question 1

The water needed for photosynthesis comes into the leaves through the

Accepted Answer

xylem cells

Answer

upper epidermis

Answer

stomata

Answer

guard cells

Question 2

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

Accepted Answer

stomata

Answer

upper epidermis

Answer

phloem

Answer

guard cells

Question 3

Which structures open and close stomata to allow gas exchange but prevent water loss in leaves?

Accepted Answer

Guard cells

Answer

Epidermis

Answer

Vascular tissue

Answer

Spongy mesophyll

Question 4

Which structure helps prevent water loss and protects the leaf?

Accepted Answer

Cuticle

Answer

Palisades mesophyll

Answer

Spongy mesophyll

Answer

Vascular tissue

Question 5

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

Accepted Answer

Palisade cells

Answer

Guard cell

Answer

Spongy layer

Answer

Lower epidermis

Question 6

What is letter "A" pointing to?

Accepted Answer

cuticle

Answer

upper epidermis

Answer

lower epidermis

Answer

palisade mesophyll

Question 7

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

Accepted Answer

palisade mesophyll

Answer

spongy mesophyll

Answer

cuticle

Answer

bundle sheath

Question 8

What is letter "D" pointing to?

Accepted Answer

spongy mesophyll

Answer

upper epidermis

Answer

palisade mesophyll

Answer

bundle sheath

Question 9

Which of the following is pointing to the "guard cell"?

Accepted Answer

E

Answer

B

Answer

C

Answer

D

Question 10

Which number is pointing to the stomata?

Accepted Answer

9

Answer

6

Answer

7

Answer

8

Question 11

Most photosynthesis occurs in this part of the leaf:

Accepted Answer

palisade mesophyll

Answer

upper epidermis

Answer

cuticle

Answer

spongy mesophyll

Question 12

The outermost layer of CELLS of the leaf is the

Accepted Answer

epidermis

Answer

cuticle

Answer

spongy mesophyll

Answer

bundle sheath

Question 13

This layer of cells is where gas exchange occurs between the plant cells and the air.

Accepted Answer

spongy mesophyll

Answer

palisade mesophyll

Answer

chloroplast

Answer

upper epidermis

Question 14

The cell organelle where photosynthesis occurs in plant cells is the

Accepted Answer

chloroplast

Answer

mitochondrion

Answer

vacuole

Answer

nucleus

Question 15

The vascular tissue which transports sugar (food) in both directions within the leaf is the

Accepted Answer

phloem

Answer

xylem

Answer

bundle sheath

Answer

chloroplast

Question 16

The majority of the stomata of a leaf can usually be found within the

Accepted Answer

lower epidermis

Answer

guard cells

Answer

upper epidermis

Answer

cuticle

Question 17

The leaf has a shiny, waxy cuticle around it to

Accepted Answer

control water loss

Answer

increase the rate of photosynthesis

Answer

attract more light

Answer

stop carbon dioxide and oxygen gases escaping

Question 18

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

Accepted Answer

stomata

Answer

upper epidermis

Answer

phloem

Answer

guard cells

Question 19

The reactants needed for photosynthesis to occur are:

Accepted Answer

carbon dioxide & water

Answer

carbon dioxide & oxygen

Answer

oxygen & water

Answer

carbon dioxide, oxygen & water

Question 20

The role of the guard cell is to

Accepted Answer

control the movement of water vapour & gases

Answer

help control the temperature of the plant

Answer

control how much water enters the leaf

Answer

control how much glucose is stored

Question 21

Transpiration helps the plant

Accepted Answer

move water from the roots to the stem and leaves

Answer

make more sugars at night

Answer

move sugars from the leaf to be stored in the stem & roots

Answer

make more chloroplasts

Question 22

Which picture shows the palisades layer?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 23

Which picture shows the spongy layer?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 24

Most of the photosynthesis in a leaf occurs in the

Accepted Answer

mesophyll layer (palisades and spongy layers).

Answer

epidermis.

Answer

xylem and phloem.

Answer

stomates.

Question 25

Stomates have multiple functions. Select the two answers that best describe what stomates do.

Accepted Answer

allow oxygen out of the leaf

Accepted Answer

allow carbon dioxide into the leaf

Answer

allow sunlight into the leaf

Answer

allow sugars out of the leaf

Question 26

Identify the reactants in the photosynthesis equation.

Accepted Answer

water

Accepted Answer

carbon dioxide

Accepted Answer

energy (from sunlight)

Answer

sugars

Answer

oxygen

Question 27

Identify the products in the photosynthesis equation.

Accepted Answer

sugars

Accepted Answer

oxygen

Answer

water

Answer

carbon dioxide

Answer

energy (from sunlight)

Question 28

What is diffusion?

Accepted Answer

when molecules move from a high concentration to a low.

Answer

when molecules move

Answer

no movement

Answer

molecules move everywhere

Question 29

The term used to describe the diffusion of water.

Accepted Answer

Osmosis

Answer

Diffusion

Answer

Selective Permeability

Answer

Equilibrium

Question 30

_______ regulates what enters and leaves a cell.

Accepted Answer

Cell Membrane

Answer

Nucleus

Answer

Mitochondria

Answer

Cytoplasm

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