Plant & Animal Gas Exchange

Question 1

Its function is to prevent water from getting out and stopping unwanted substances/ organisms from getting in.

Answer 1

Waxy Cuticle

Question 2

It has a few stomata and
less number of chloroplast since it has less number of guard cells.

Answer 2

Upper Epidermis

Question 3

Refers to a single layer of cells on the lower surface of the leaf with a large number of stomata and guard cells.

Answer 3

Lower Epidermis

Question 4

It is composed of closely packed
photosynthetic cells.

Answer 4

Palisade Mesophyll

Question 5

It is composed of spherical and loosely packed photosynthetic cells. Air spaces between these cells allow for gas exchange.

Answer 5

Spongy Mesophyll

Question 6

Sites of gaseous exchange in
the leaf, regulate water loss (transpiration).

Answer 6

Stomata

Question 7

Regulate the opening and
closing of stomata.

Answer 7

Stomata

Question 8

Contains the xylem (transports water and minerals to the leaf) and phloem (in charge of the
transport and distribution of the organic nutrients).

Answer 8

Vascular Bundle

Question 9

It is an organelle found only in plant cells, allows the plant to go through photosynthesis.

Answer 9

Chloroplast

Question 10

Refers to the general body surface or skin used by animals with high surface-to-volume ratio; e.g. flatworm and
earthworm.

Answer 10

Integumentary Exchange

Question 11

Are tissues that are like short threads, protein structures called filaments which
exchange gases in water environments.

Answer 11

Gills

Question 12

Gas exchange/mechanism commonly found in insects.

Answer 12

Tracheal Systems