Morphology of Flowering Plants

Axile placentation is present in

1. pea
2. Argemone
3. Dianthus
4. lemon.

Roots play insignificant role in absorption of water in

1. pea
2. wheat
3. sunflower
4. Pistia.

Perigynous flowers are found in

1. China rose
2. rose
3. guava
4. cucumber.

Keel is the characteristic feature of flower of

1. Aloe
2. tomato
3. tulip
4. Indigofera.

Leaves become modified into spines in

1. onion
2. silk cotton
3. Opuntia
4. pea

[figure] is the floral formula of

1. Petunia
2. Brassica
3. Allium
4. Sesbania.

The hilum is a scar on the

1. seed, where funicle was attached
2. fruit, where style was present
3. fruit, where it was attached to pedicel
4. seed, where micropyle was present

Placenta and pericarp are both edible portions in

1. apple
2. banana
3. tomato
4. potato

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.