Q. No.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
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
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All the following characteristics differentiate stems from the roots except:
1. Development from the plumule
2. Presence of nodes and internodes
3. Terminal or axillary buds
4. Endogenous development of branches
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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Which of the following is incorrect regarding the leaf of a flowering plant?
1. It develops at the node and bears a bud in its axil
2. Axillary bud later develops into a branch
3. They originate from shoot apical meristems
4. They are arranged in a basipetal order
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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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