Sexual Reproduction in Flowering plants Class 12 #2| Pollination |Double Fertiization | CBSE NEET

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Timestamps:
0:00 Introduction
1:02 Pollination
3:11 Self Pollination
4:11 Cross Pollination
5:14 Types of Pollination
5:40 Autogamy
11:08 Geitonogamy
12:24 Xenogamy
14:04 Pollinating agents
15:04 Pollination by Wind
17:39 Pollination by Water
19:06 Pollination by wind and water
19:55 Pollination by biotic agents
20:43 Insect/animal pollination
21:58 Yucca plant-Moth relationship
24:37 Outbreeding devices
30:36 Compatibility between pollen and pistil
33:20 Compatibility pollen and pistil interaction
36:50 Incompatible pollen pistil interaction
37:21 Pollen pistill interaction
39:21 Artificial Hybridization
43:30 Fertilization in a flowering plant
44:59 Double Fertilization
45:43 Post fertilization events
47:20 Endosperm
50:14 Free-nuclear endosperm
51:31 Types of Seed
53:08 Embryo
53:55 Stages of Embryogeny in an embryo
54:51 Dicotyledonous Embryo
57:27 Monocotyledonous Embryo
58:30 Seed
58:51 Ovule to Seed
1:01:09 Basic Structure of a seed
1:02:21 Types of seed: Monocot & Dicot
1:02:53 Dicotyledonous seed structure
1:05:44 Monocotyledonous seed structure
1:08:16 Ovary to Fruit
1:08:35 Fruit
1:09:41 Edible pars of different fruits
1:12:45 Fruit types
1:13:26 Parthenocarpic fruit
1:15:01 Seeds:Uses in Agriculture
1:15:50 Apomixis
1:18:32 Apomixis: Importance

In this video, we will cover:-
Pollination is the mechanism to achieve this objective. Transfer of pollen grains (shed from the anther) to the stigma of a pistil is termed pollination. Flowering plants have evolved an amazing array of adaptations to achieve pollination. Plants use two abiotic (wind and water) and one biotic (animals) agents to achieve pollination. Majority of plants use biotic agents for pollination. Majority of flowering plants produce hermaphrodite flowers and pollen grains are likely to come in contact with the stigma of the same flower. Pollinating agents are animals such as insects, birds, and bats; water; wind; and even plants themselves, when self-pollination occurs within a closed flower. In angiosperms, after the pollen grain (gametophyte) has landed on the stigma, it germinates and develops a pollen tube which grows down the style until it reaches an ovary.

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