Dicotyledons

Q.

How would you distinguish monocots from dicots?

Q.

Which of the following comparisons between a monocot and a dicot is NOT correct?

1. Monocot - One cotyledon in seed
   Dicot - Two cotyledons in seed

2. Monocot - Vascular bundles scattered in stem
   Dicot - Vascular bundles in a distinct ring

3. Monocot - Leaf veins form a net pattern
   Dicot - Leaf veins form a parallel pattern

4. Monocot - Flower parts in threes and multiples of three
   Dicot - Flower parts in fours or fives and multiples of four or five

Q. Abnormal secondary growth is observed in

1. Dracaena
2. Wheat
3. Ginger
4. Rice

Q. Velamen of orchids are formed from

1. Phelloderm
2. Phellogen
3. Dermatogen
4. Cortex

Q. Match the columns.

	Column I		Column II
$1$.	Tubercular storage roots	a	Tinospora
$2$.	Pneumato	b	Heritiera
$3$.	Haustoria	c	Asparagus
$4$.	Prop roots	d	Viscum
$5$.	Assimilatory roots	e	Screwpine

1. $1-c,2-b,3-d,4-e,5-a$
2. $1-b,2-c,3-d,4-e,5-a$
3. $1-e,2-d,3-c,4-b,5-a$
4. $1-c,2-d,3-e,4-a,5-b$
5. $1-c,2-a,3-b,4-e,5-d$

Q. When the stems have dense soft coatings all over their surface, such surfaces are called as

1. Ribbed
2. Pubescent
3. Succulent
4. Hairy

Q. Underground stems are primarily meant for

1. Perennation
2. Vegetative reproduction
3. Protection from strong light
4. Anaerobic respiration