Vexillary

Q.

Describe vexillary aestivation with a suitable example.

Q.

What is the aestivation of Brassica campestris?

1. Valvate Aestivation

2. Twisted Aestivation

3. Imbricate Aestivation

4. Vexillary Aestivation

Q. The standard petal of papilionaceous corolla is also called :

1. Pappus
2. Vexillum
3. Corona
4. Carina

Q.

What are the different shapes a corolla can take?

Q. Out of 5 petals of a flower bud, the standard petal overlaps the two wing petals which in turn overlaps two smaller keel petals. This type of aestivation is called:

1. Twisted
2. Valvate
3. Vexillary
4. Imbricate

Q.

Cruciform corolla is characterized by:

1. Five fused petals

2. Five free sessile petals

3. Four diagonally placed clawed petals

4. Four medially and laterally placed clawed petals

Q. The standard petal of papilionaceous corolla is also called :

1. Carina
2. Pappus
3. Vexillum
4. Corona

Q. Bicarpellary syncarpous gynoecium, parietal placentation, tetradynamous stamens and siliqua fruit are characteristic features of which family?

1. Cucurbitaceae
2. Cruciferae
3. Compositae
4. Solanaceae

Q. Epipetalous stamen, obliquely placed placenta and fruit berry or capsule are diagnostic features of family

1. Solanaceae
2. Cruciferae
3. Labiatae
4. Malvaceae

Q. Label the parts in the picture given below.

1. a - standard , b - wings, c - keel
2. a - wings, b - standard, c - keel
3. a - keel, b - standard, c - wings
4. None of the above

Q. What is aestivation? Describe its various types found in petals.

Q. What is meant by monadelphous stamens?

Q.

A papilionaceous corolla has

1. Valvate aestivation

2. Twisted aestivation

3. Imbricate aestivation

4. None of the above

Q.

A papilionaceous corolla has

1. Valvate aestivation

2. Twisted aestivation

3. Imbricate aestivation

4. None of the above

Q. Gynostegium (Fusion of anthers with stigma) and pollinia are present in family

1. Asclepiadaceae
2. Apocynaceae
3. Solanaceae or Cucurbitaceae
4. Convolvulaceae

Q. Petals are connate when they are

1. Polypetalous
2. Fused upto half
3. Fused only at the base
4. Fused completely

Q. Keel is characteristic of the flowers of

1. solanum
2. Allium
3. Calotropis
4. Bean

Q.

Type of aestivation shown by Pisum is

1. Twisted

2. Imbricate

3. Vexillary

4. Quincuncial

Q. Which of the following describes the characteristics of flower in leguminosae?

1. Zygomorphic
2. All of the above
3. Pedicellate
4. Bracteate

Q. Standard petal in Papilionaceae is

1. Posterior and outermost
2. Posterior and innermost
3. Anterior andinnermost
4. Anterior and outermost

Q.

A papilionaceous corolla has

1. twisted aestivation

2. valvate aestivation

3. ascendingly imbricate aestivation

4. descendingly imbricate aestivation

Q.

Type of aestivation shown by Pisum is

1. Imbricate

2. Vexillary

3. Twisted

4. Quincuncial

Q. Vexillary aestivation is a characteristic feature of a family which also exhibits

1. axile placentation
2. diadelphous condition
3. epipetalous condition
4. berry fruit

Q. In China rose, the flowers are

1. Zygomorphic, epigynous with twisted aestivation
2. Actinomorphic, hypogynous with twisted aestivation
3. Actinomorphic, epigynous with valvate aestivation
4. Zygomorphic, hypogynous with imbricate aestivation

Q. Papilionaceous flower with large vexillum covering two wings
and the wings covering the keel has corolla motivation of

1. Descending imbricate
2. Ascending imbricate
3. Twisted
4. Valvate

Q. Aestivation found in pea flowers is

1. Twisted
2. Valvate
3. Imbricate
4. Vexillary

Q. Pepo is a fruit of

1. Cruciferae
2. Leguminosae
3. Cucurbitaceae
4. Liliaceae

Q. Label the parts in the picture given below.

1. a - wings, b - standard, c - keel
2. a - standard , b - wings, c - keel
3. a - keel, b - standard, c - wings
4. None of the above

Q.

Type of aestivation shown by Pisum is

1. quincuncial

2. imbricate

3. vexillary

4. twisted