Q. No.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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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 |
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The term that describes united sepals in a flower is:
| 1. | Calyx | 2. | Perianth |
| 3. | Gamosepalous | 4. | Polysepalous |
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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 |
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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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