What is not true for a stem in a flowering plant in general?
1. Negatively geotropic
2. Develops from plumule of the germinating embryo
3. Absence of terminal and axillary buds
4. Spreads out branches bearing leaves, flowers and fruits

Subtopic:  Morphology of Stems |
 85%
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Stem tendrils are present in all the following except:

1. Citrus 2. Watermelon
3. Cucumber 4. Grapevines
Subtopic:  Aerial Stem Modification |
 83%
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Match each item in Column I regarding structure of a dicotyledonous seed with description in Column II and select the correct option from the codes given below:

 

COLUMN I

 

COLUMN II

A

Testa

a

Outer layer of seed coat

B

Tegmen

b

Inner layer of seed coat

C

Hilum

c

Scar on seed coat through which the developing seeds were attached to the fruit

D

Micropyle

d

Small pore through which pollen tube penetrates

Codes

A B C D
1. a b c d
2. b a c d
3. b a d c
4. a b d c
Subtopic:  Seed |
 87%
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Stems contain chlorophyll and carry out photosynthesis in:

1. Opuntia and Euphorbia 2. Mint and Jasmine
3. Pistia and Eichhornia 4. Banana and Pineapple
Subtopic:  Aerial Stem Modification |
 88%
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A lateral branch arises from the base of the main axis and after growing aerially for some time arches downwards to touch the ground in:

1. Opuntia and Euphorbia 2. Mint and Jasmine
3. Pistia and Eichhornia 4. Banana and Pineapple
Subtopic:  Aerial Stem Modification |
 81%
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Apocarpous gynoecium is seen in:

1. Lotus 2. Mustard
3. Papaver 4. Tomato
Subtopic:  Flower & Parts of Flower |
 67%
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A lateral branch with short internodes and each node bearing a rosette of leaves and tufts of roots is found in:

1. Opuntia and Euphorbia 2. Mint and Jasmine
3. Pistia and Eichhornia 4. Banana and Pineapple
Subtopic:  Aerial Stem Modification |
 84%
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The term that describes united sepals in a flower is:

1. Calyx 2. Perianth
3. Gamosepalous 4. Polysepalous
Subtopic:  Flower & Parts of Flower |
 77%
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The placentation shown below will be seen in:

1. Argemone 2. Dianthus
3. Tomato 4. Sunflower
Subtopic:  Flower & Parts of Flower |
 63%

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A parallel venation will be seen in the leaves of all the following plants except:

1. Wheat 2. Rice
3. Pea 4. Maize
Subtopic:  Venation, Types of Leaves & Phyllotaxy |
 81%
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