Q. No.Roots arising from the parts of a plant other than radical are called as:
1. Tap root
2. Fibrous roots
3. Adventitious roots
4. Lateral roots
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In a flower, if the gynoecium occupies the highest position, the flower is said to be:
| 1. Superior | 2. Inferior |
| 3. Hypogynous | 4. Epigynous |
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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
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Stem tendrils are present in all the following except:
| 1. Citrus | 2. Watermelon |
| 3. Cucumber | 4. Grapevines |
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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 |
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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 |
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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 |
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Root hairs at the root tip are formed by:
| 1. | Epidermal cells in the region of maturation |
| 2. | Cortical cells in the region of elongation |
| 3. | Epidermal cells in the region of elongation |
| 4. | Cortical cells in the region of maturation |
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In mango, the fruit is:
| 1. | drupe and mesocarp is fleshy and edible |
| 2. | drupe and mesocarp is fibrous |
| 3. | berry and mesocarp is fleshy and edible |
| 4. | berry and mesocarp is fibrous |
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When sepals or petals in a whorl just touch one another at the margin, without overlapping, the aestivation is said to be:
| 1. | Valvate | 2. | Twisted |
| 3. | Imbricate | 4. | Vexillary |
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