Plant And Soil Science

Question 1

Define plant

Answer 1

Living organism such as trees, shrubs, grasses, typically growing in a permanent site, absorbs water and inorganic substances through its roots, and synthesises nutrients in its leaves by photosynthesis with the green pigment chlorophyll.

Question 2

What are roots for

Answer 2

Anchorage, uptake of water and minerals, storage of food, propagation.

Question 3

What is the stem for

Answer 3

Support, transport, secondary growth

Question 4

What are seeds for

Answer 4

Dormant embryos and food storage

Question 5

What is the petiole?

Answer 5

Leaf stalk that connects leaf to stem

Question 6

Cuticle

Answer 6

Waxy substance that covers leaves and stem. Waterproof and keeps water in plant.

Question 7

Epidermis

Answer 7

Single layer of cells under cuticle.

Question 8

Palisade mesophyll

Answer 8

The long cells under epidermis. Primary site of photosynthesis due to chlorophyll.

Question 9

Spongy mesophyll

Answer 9

Round cells the contain air and chloroplast.

Question 10

Vascular bundle

Answer 10

Also called veins. In spongy mesophyll layer. Contains xylem and phloem.