Match List-I with List-II
| List-I | List-II |
|---|---|
| Terms | Features |
| (A) Autogamy | (I) Transfer of pollen grains from the anther to the stigma of another flower of the same plant |
| (B) Geitonogamy | (II) Flowers which do not open at all |
| (C) Cleistogamous | (III) Transfer of pollen grains from the anther to the stigma of the same flower |
| (D) Chasmogamous | (IV) Flowers which are similar to flowers of other species with exposed anthers and stigma |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A) - (III), (B) - (I), (C) - (II), (D) - (IV)
(A) Autogamy — this matches (III) Transfer of pollen grains from the anther to the stigma of the same flower. Pollen and stigma belong to one flower, so the plant fertilises itself.
(B) Geitonogamy — this matches (I) Transfer of pollen grains from the anther to the stigma of another flower of the same plant. It needs a pollinator, like cross-pollination. But the pollen and the stigma come from the same plant, so genetically it is like self-pollination.
(C) Cleistogamous — this matches (II) Flowers which do not open at all. The anthers and stigma lie close together inside the closed flower, so self-pollination is certain.
(D) Chasmogamous — this matches (IV) Flowers which are similar to flowers of other species with exposed anthers and stigma. These flowers open, so pollen can be carried in or out.
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).”
Pollination – “… (ii) Geitonogamy – Transfer of pollen grains from the anther to the stigma of another flower of the same plant.”
Pollination – “… Some plants such as Viola (common pansy), Oxalis, and Commelina produce two types of flowers – chasmogamous flowers which are similar to flowers of other species with exposed anthers and stigma, and cleistogamous flowers which do not open at all (Figure 1.9c).”