Chief characteristics of stem do not include:

1. Develops from the plumule

2. Positive phototropic nature

3. Presence of nodes and internodes

4. Endogenously developed multicellular hair

Match aerial modifications of stem given in column I with their descriptions in column II and choose your answer from the codes given below:

Codes:

In racemose type of branching:

1. Branches continue to grow indefinitely and give off further branches laterally in a basipetal order

2. Branches continue to grow indefinitely and give off further branches laterally in an acropetal order

3. Branches stop growing after some time and give off further branches laterally in a basipetal order

4. Branches stop growing after some time and give off further branches laterally in an acropetal order

In Australian Acacia, the petiole or any part of rachis becomes flattened taking the shape of a leaf and turning green in color. This structure is called as:

(1) Phylloclade

(2) Cladode

(3) Phyllode

(4) bulbil

In the ray florets of sunflower, the condition of the flower is termed as:

1. Superior

2. Inferior

3. Epigynous

4. Hypogynous

China rose is not characterized by:

(1) Axile placentation

(2) Valvate aestivation

(3) Monoadelphous stamen

(4) Superior ovary

The given floral formula describes:

Br ⊕   P₍₃₊₃₎ A₃₊₃ G₍₃₎

1. Asparagus

2. Belladonna

3. Indigofera

4. Mustard

In vexillary aestivation:

1. The standard overlaps the wings

2. The standard overlaps the keel

3. The standard is overlapped by keel

4. The keel overlap the wings

Which of the following would not be a character of Asparagus?

1. Actinomorphic flower

2. Imbricate aestivation

3. Superior ovary

4. Endospermous seed

The cells of which of the following regions of the root are responsible for growth of its length?

1. Root cap

2. Region of meristematic activity

3. Region of elongation

4. Region of maturation