Tricarpellary, syncarpous and gynoecium is found in flowers of

1. Solanaceae

2. Fabaceae

3. Poaceae

4. Liliaceae

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

Proximal end of the filament of stamen is attached to the

(1) connective

(2) placenta

(3) thalamus or petal

(4) anther

The standard petal of a papilionaceous corolla is also called

(1) pappus

(2) vexillum

(3) corona

(4) carina

The term 'polyadelphous' is related to 

1. gynoecium

2. androecium

3. corolla

4. calyx

Plants, which produce characteristic pneumatophores and show vivipary belong to

(1) mesophytes

(2) halophytes

(3) psammophytes

(4) hydrophytes

How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?

1.  Three

2.  Four

3.  Five

4.  Six

Radial symmetry is found in the flowers of?

1. Brassica

2. Trifolium

3. Pisum

4. Cassia

Free-central placentation is found in?

Coconut fruit is a: