List-I (Kind of Pollination) | List-II (Features) |
(A) Autogamy | (I) Pollination involving flowers of two different plants |
(B) Geitonogamy | (II) Pollination involving water |
(C) Xenogamy | (III) Pollination involving two flowers of the same plant |
(D) Hydrophily | (IV) Pollination involving the same flower |
The task is to match the items in List-I, which describes the kind of pollination, with the corresponding features from List-II. Here are the explanations for each type:
Thus, the correct matches are:
Therefore, the correct answer is (A)-(IV), (B)-(III), (C)-(I), (D)-(II).
Here is the correct matching between the types of pollination and their features:
(A) Autogamy (IV): Autogamy is self-pollination that occurs within the same flower. In autogamy, pollens from the same flower fertilize the ovules of the same flower, leading to self-fertilization.
(B) Geitonogamy (III): Geitonogamy involves pollination between two flowers of the same plant. Though the flowers are different, the pollen comes from the same plant.
(C) Xenogamy (I): Xenogamy is cross-pollination, involving pollen from one plant fertilizing the ovule of a different plant. It occurs between two genetically distinct plants of the same species.
(D) Hydrophily (II): Hydrophily refers to pollination by water, where pollen is carried by water to the ovules in aquatic plants.
Thus, the correct match is:
(A) Autogamy → (IV) Pollination involving the same flower
(B) Geitonogamy → (III) Pollination involving two flowers of the same plant
(C) Xenogamy → (I) Pollination involving flowers of two different plants
(D) Hydrophily → (II) Pollination involving water
Correct Answer: (3) (A)-(IV), (B)-(III), (C)-(I), (D)-(II).
Many of the flowering plants producing hermaphrodite flowers have developed many devices to discourage self-pollination and to encourage cross-pollination. Given below is a picture of one such outbreeding device in a flowering plant. Study the picture and answer the questions that follow:
(a) Explain how the given type of pollination is advantageous to the plant.
(b) Can this flowering plant show geitonogamy? Justify your answer.
Match the pollination types in List-I with their correct mechanisms in List-II:
List-I (Pollination Type) | List-II (Mechanism) |
---|---|
A) Xenogamy | I) Genetically different type of pollen grains |
B) Ophiophily | II) Pollination by snakes |
C) Chasmogamous | III) Exposed anthers and stigmas |
D) Cleistogamous | IV) Flowers do not open |
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Both wind and water pollinated flowers are not very colorful and do not produce nectar.
Reason (R): The flowers produce enormous amounts of pollen grains in wind and water pollinated flowers.
In light of the above statements, choose the correct answer from the options given below: