Reproduction in plants Sexual reproduction produces offspring that are not identical to their parents, whereas asexual reproduction produces identical offspring. If the grains are dispersed by animal, it would have bright petals or an attracting scent to bring in the animals. If it happens sexually, it is a result of dispersion.The two main methods of Pollination of  a plants' seeds are by animal or wind.

Reproduction in Plants Reproduction in plants happen both sexually and asexually. Home › Biology Revision › CIE IGCSE › Topic 16 – Reproduction. Topic 16 – Reproduction. Biology Notes for IGCSE 2014. Contact: Gajendra khandelwal (mandawara8@gmail.com), Deepthi Uthaman (duthaman12@gmail.com) 1. 1_Characteristics and classification of living organisms


If it is pollinated by wind, the pollen grains would be light so it can travel through the wind. Fig. http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/evolution/reproductionrev2.shtml These types of flowers are small, green and inconspicuous compared with insect-pollinated flowers.The anthers hang outside the flower so the wind can blow away the large quantities of small, smooth and light pollens that they produce.Pollen grains : larger amount of pollen grains are produced.The stigma is feathery and positioned outside the flower.Provide large surface area for catching pollen grains.Pollination is the transfer of pollen grains from the anther to a stigma of a plant of the same species.Transfer of pollen grains from the anther to stigma of the same flower or another flower on the same plant is said to be self pollination.Transfer of pollen grains from the anther of a flower from one plant to the stigma of the flower on another plant of same species is called cross pollination.The pollen tube grows down the style of the carpel.

It grows around the opening in the ovule to get there.Seeds disperse so that there is less competition for resources such as water in that specific area. 4. If it happens sexually, it is a result of dispersion.

Types of reproduction. Zygote divides to form an embryo which may grow into a new individual plant. The embryo consists of radicle and plumule.Dispersal helps plants colonise new area and avoids them all growing Features of fruits and seeds dispersed by the wind are as following:Succulent fruit (Fleshy and bright coloured fruits)Germination is a process when the seed develops into a seedling.The process of germination starts with the seed absorbing water.Water  is needed for seed to swell. Seed dispersal. 1.2._Classification and diversity of living organisms 5.

Home Search Pdf Classification > Cells Enzymes ... Reproduction. Examples are flowering plants such as roses or daisies.If pollination is successful, the pollen grain grows a tube down the style to the ovary, where it fuses with the ovum.

The pollen grains would attach to the animal, which would go to the next plant and leave the grains there as the pollen grains attach to the stigma. Our online Biology GCSE catchup courses on 24-25 August will review Year 10 content, getting you ready for September. In flowering plants the male gametes are inside the pollen grains and female gametes are inside the ovules. Lockdown revision never really happened? These include:Create your own unique website with customizable templates. the zygote divides by mitosis and grow into embryo.

Reproduction in plants happen both sexually and asexually.

2. Reproduction in plants Sexual reproduction produces offspring that are not identical to their parents, whereas asexual reproduction produces identical offspring. Flowers are the reproductive organ of the plant They usually contain both male and female reproductive parts Plants produce pollen which contains a nucleus inside that is the male gamete Unlike the male … Part of

Eventually the original root connecting the two plants breaks down, separating the plants. There are a few ways in which a plant can disperse its seeds after pollination. 3 Flower structure. Examples include dandelion seeds.

Formation of seeds. 6.

Flowers are the reproductive organ of the plant They usually contain both male and female reproductive parts Plants produce pollen which contains a nucleus inside that is the male gamete Unlike the male gamete in humans (sperm), pollen is not capable of locomotion (moving from one place to another)

Reproduction in plants.
Plants can also reproduce asexually; Natural methods Runners – a root from one plant grows a separate shoot, which grows into a new plant. The offspring shows genetic variations. that make more of the same kind of organisms- new individuals.resulting in the production of genetically identical All the good characteristics of the parent are passed on to the offspring.Flowering plants carry out sexual reproduction by producing flowers.Grasses and cereals are all pollinated by the wind. (discussed later) During sexual reproduction the gametes fuse together at fertilisation and form zygote. Summary.

See also rhizomes, corms, bulbs and …

This swelling  breaks the testas of some seeds.Oxygen is needed for aerobic respiration to provide the embryo with energy.Suitable warm temperature is needed for efficient enzyme action


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