Keel is the characteristic feature of flower of

(1) tulip

(2) Indigofera

(3) Aloe

(4) tomato

The wheat grain has an embryo with one large, shield-shaped cotyledon known as

(1) epiblast

(2) coleorrhiza

(3) scutellum

(4) coleoptile

Root hairs develop from the region of

(1) maturation

(2) elongation

(3) root cap

(4) meristematic activity

In Bougainvillea, thorns are the modifications of

(1) stipules

(2) adventitious root

(3) stem

(4) leaf

Coconut fruit is a

1. drupe

2. berry

3. nut

4. capsule

The term 'polyadelphous' is related to 

1. gynoecium

2. androecium

3. corolla

4. calyx

Tricarpellary, syncarpous and gynoecium is found in flowers of

1. Solanaceae

2. Fabaceae

3. Poaceae

4. Liliaceae

Cotyledon of maize grain is called

1. coleorhiza

2. coleoptile

3. scutellum

4. plumple

Which of the following is not a stem modification?

1. Thorns of citrus

2. Tendrils of cucumber

3. Flattened structures of Opunita

4. Pitcher of Nepenthes

Axile placentation is present in

1. dianthus                   

2. lemon

3. pea                           

4. Argemone