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

Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many

plants have superior ovary?

1. Five                         

2. Six

3. Three                       

4. Four

Perigynous flowers are found in 

1. Guava

2. Cucumber

3. China rose

4. Rose

The hilum is a scar on the

1. seed, where funicle was attached

2. fruit, where it was attached to the pedicel

3. fruit, where style was present

4. seed, where micropyle was present

When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

(1) vexillary

(2) imbricate

(3) twisted

(4) valvate

Which one of the following statements is correct?

1. The seed in grasses is not endospermic

2. Mango is a parthenocarpic fruit

3. A proteinaceous aleurone layer is present in maize grain

4. A sterile pistil is called a staminode

An example of an edible underground stem is

1. carrot

2. groundnut

3. sweet potato

4. potato

Placentation in tomato and lemon is 

1. parietal

2. free central

3. marginal

4. axile

Cymose inflorescence is present in

(1) Solanum

(2) Sesbania

(3) Trifolium

(4) Brassica