Monocotyledons & Dicotyledons

Question 1

Differentiate monocots & dicots regarding embryo

Answer 1

● Monocots

• 1 cotyledon present.
• endosperm always present.

● Dicots

• 2 cotyledons present.
• endosperm present/absent.

Question 2

Differentiate monocots & dicots regarding roots.

Answer 2

● Monocots

• short duration primary root.
• adventitious roots
• fibrous roots.

● Dicots

• long duration primary root.
• tap roots.
• small secondary root from tap root.

Question 3

Differentiate monocots & dicots regarding growth form

Answer 3

● Monocots
- Herbaceous + arboscent (tree like).

● Dicots
- Herbaceous OR Woody.

Question 4

Differentiate monocots & dicots regarding pollen

Answer 4

● Monocots
- monocolpate (having 1 pore).

● Dicots
- tricolpate (having 3 pores).

Question 5

Differentiate monocots & dicots regarding vascular system

Answer 5

● Monocots

• no differentiation of stems.
• cambium exceptionally present.

● Dicots

• stem differentiation into cortex & stele.
• cambium always present.

Question 6

Differentiate monocots & dicots regarding leaves

Answer 6

● Monocots

• parallel-veined.
• no stipules.
• oblong/linear shape.
• sheathing at base.
• seldom stalk/petiole development.

● Dicots

• net-veined (pinnate/palmate).
• stipules present.
• broad shape.
• no sheathing at base.
• stalk/petiole development.

Question 7

Differentiate monocots & dicots regarding flowers

Answer 7

● Monocots
- parts are in 3’s or multiples of 3.

● Dicots
- parts are in 4’s or 5’s.

Question 8

Monocots covered in module? (3)

Answer 8

● Cyperaceae (sedge family).
● Iridaceae (gladiolus family).
● Poaceae (grass family).

Question 9

Dicots covered module? (9)

Answer 9

● Acanthaceae.
● Aizoaceae.
● Apocynaceae (Asclepiadoideae).
● Asteraceae.
● Crassulaceae.
● Fabaceae/Leguminosae.
● Lamiaceae/Labiatae.
● Proteaceae.
● Amaryllidaceae.