Samuels BIO Internal Leaves Question Preview (ID: 28346)


Biology Internal Leaves. TEACHERS: click here for quick copy question ID numbers.

This waxy structure is present in some plants, such as holly, for protection.
a) cuticle
b) epidermis
c) mesophyll
d) parenchyma

These allow air to move into and out of leaves as well as regulate transpiration.
a) stomata
b) chlorophyll
c) mesophyll
d) parenchyma

This layer of the leaf is the covering for the upper and lower surfaces of the leaf and is sometimes covered in a waxy structure.
a) epidermis
b) mesophyll
c) veins
d) stomata

These extensions on the epidermis of a leaf slow water loss and sometimes produce toxic chemicals.
a) leaf hairs
b) cillia
c) flagella
d) stomata

These cells open and close the stomata regulate the flow of gases, particularly water vapor.
a) guard cells
b) chlorophyll
c) mesophyll
d) xylem

The middle portion of the leaf where photosynthesis takes place
a) mesophyll
b) epidermis
c) veins
d) phloem

These contain vascular tissue, xylem and phloem, within the leaf
a) veins
b) mesophyll
c) epidermis
d) parenchyma

Straight lines of veins in a leaf denote
a) parallel venation
b) pinnate venation
c) palmate venation
d) reticulate venation

Branching lines of veins in a leaf similar to the crown of deciduous trees denote
a) palmate venation
b) parallel venation
c) pinnate venation
d) reticulate venation

This is the process by which a plant loses water vapor through its leaves and stems
a) transpiration
b) cellular respiration
c) evaporation
d) photosynthesis

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