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

A   

Phylloclade   

P   

Green, flattened or cylindrical branches of unlimited growth

B

Cladode

Q

Branches of limited growth that become green and flat like a leaf

C

Bulbil

R

Modified vegetative bud with stored food meant for reproduction

Codes:

 

A     

B     

C

(1)

P

Q

R

(2)

P

R

Q

(3)

R

P

Q

(4)  

Q

R

P

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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 indifinitely 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

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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

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

(1) Superior

(2) Inferior

(3) Epigynous

(4) Hypogynous

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China rose is not characterized by:

(1) Axile placentation

(2) Valvate aestivation

(3) Monoadelphous stamen

(4) Superior ovary

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The given floral formula describes:

(1) Asparagus

(2) Belladona

(3) Indigofera

(4) Mustard

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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

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

1. Actinomorphic flower

2. Imbricate aestivation

3. Superior ovary

4. Endospermous seed

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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

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Identify the correct statement regarding the stem morphology from the following:

I. Stems bear only axillary buds.

II. Axillary buds may get modified into thorns as in Citrus

III. Stem tendrils develop from axillary buds as in gourds.

1. Only I and II

2. Only I and III

3. Only II and III

4. I, II and III

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