Morphology of Flowering Plants

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.

An example of edible underground stem is

1. carrot
2. groundnut
3. sweet potato
4. potato.

An aggregate fruit is one which develops from

1. multicarpellary syncarpous gynoecium
2. multicarpellary apocarpous gynoecium
3. complete inflorescence
4. multicarpellary superior ovary.

Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, Withania, potato, onion, aloe and tulip how many plants have hypogynous flower?

1. Fifteen
2. Eighteen
3. Six
4. Ten