Which of the following is not a correct floral character of the members of family Solanaceae?

(1) Flower : Zygomorphic

(2) Calyx : Valvate aestivation

(3) Stamens : Epipetalous

(4) Fruit : Berry or capsule

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Pneumatophores are seen in:

(1) Rhizophora

(2) Banyan tree

(3) Carrot

(4) Turnip

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Stem tendrils are not seen in:

(1) Grapevine

(2) Watermelon

(3) Citrus

(4) Cucumber

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When a shoot tip transforms into a flower,:

(1) It is always solitary

(2) The flower is always short lived

(3) It is never solitary

(4) The flower is always long lived

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Some foliar roots also produce adventitious roots as in:

(1) Oxalis

(2) Coleus

(3) Tapioca

(4) Bryophyllum

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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

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Consider the following statements regarding aerial modifications of stem:

I. Tendrils help plants to climb as seen in passion flower and Vitis

II. Axilary and Terminal buds are modified into thorns in lemon, pomegranate and karonda

III. Prickles develop superficially at the surface of the stem and are distributed irregularly as in rose and plum

Of the given statements, correct are:

(1) I and II only

(2) I and III only

(3) II and III only

(4) I, II and III

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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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