Match List-I with List-II:
| List-I | List-II |
|---|---|
| Kind of Pollinations | Features |
| (A) Autogamy | (I) Pollination involving flower of two different plants |
| (B) Geitonogamy | (II) Pollination involving water |
| (C) Xenogamy | (III) Pollination involving two flowers of same plant |
| (D) Hydrophyily | (IV) Pollination involving same flower |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A)-(IV), (B)-(III), (C)-(I), (D)-(II)
(A) Autogamy — this matches (IV) Pollination involving same flower. In autogamy the pollen grains reach the stigma of the very flower that made them. This needs the anthers and stigma to lie close and to mature at the same time.
(B) Geitonogamy — this matches (III) Pollination involving two flowers of same plant. The pollen goes from one flower to another flower of the same plant. It needs a pollinating agent, but genetically it is the same as autogamy, because all the flowers of a plant have the same genes.
(C) Xenogamy — this matches (I) Pollination involving flower of two different plants. The pollen comes from a different plant. This is the only type that brings genetically different pollen to the stigma.
(D) Hydrophyily — this matches (II) Pollination involving water. In hydrophily water carries the pollen, as in Vallisneria and Hydrilla among freshwater plants and Zostera among sea grasses.
NCERT Extract:
Pollination – “… (i) Autogamy : In this type, pollination is achieved within the same flower. Transfer of pollen grains from the anther to the stigma of the same flower (Figure 1.9a). In a normal flower which opens and exposes the anthers and the stigma, complete autogamy is rather rare.
(ii) Geitonogamy – Transfer of pollen grains from the anther to the stigma of another flower of the same plant. Although geitonogamy is functionally cross-pollination involving a pollinating agent, genetically it is similar to autogamy since the pollen grains come from the same plant.
(iii) Xenogamy – Transfer of pollen grains from anther to the stigma of a different plant (Figure 1.9b). This is the only type of pollination which during pollination brings genetically different types of pollen grains to the stigma.”
Agents of Pollination – “… Some examples of water pollinated plants are Vallisneria and Hydrilla which grow in fresh water and several marine sea-grasses such as Zostera.”