In a unilocular ovary with a single ovule, the placentation is

1. marginal

2. basal

3. free central

4. axile

Keel is characteristic of the flowers of

1. gulmohur

2. Cassia

3. Calotropis

4. bean

The technical term used for the androecium in a flower of China rose (Hibiscus rosa sinensis) is

1. monadelphous

2. diadelphous

3. polyandrous

4. polyadelphous

The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons?

1. Cotyledon

2. Endosperm

3. Aleurone layer

4. Plumule

The floral formula   is that of

1. tulip

2. soybean

3. sunn hemp

4. tobacco

An example of axile placentation is 

(1) Argemone

(2) Dianthus

(3) lemon

(4) marigold

What type of placentation is seen in sweet pea?

1. Basal

2. Axile

3. Free central

4. Marginal

The examples (s) of modified leaves are

1. tendrils of pea

2. spines of cacti

3. pitcher of the pitcher plant

4. all of the above.

Which floral family has (9) + 1 arrangement of anthers in the androecium?

1. Malvaceae

2. Rutaceae

3. Fabaceae

4. Caesal pinaceae

Coconut's husk fibre, coir of commerce is extracted from

1. epicarp

2. mesocarp

3.endocarp

4. all of these