Transpiration and Structure of Stomata Transpiration is the process in which plants release the water inside it in the form of moisture or water vapor Roots consume some amount of water from the soil and the rest evaporates in the atmosphere Parts of plants such as stems small pores on leaves and flowers evaporate the water to the atmosphere
A typical seed consists of the following parts Source Google Tesla It is the outer coat of the seed that protects the embryonic plant Micropyle It is a tiny pore in the testa that lies on the opposite of the tip of the radicle It permits water to enter the embryo before active germination Hilum Is a scar left by the stalk which
·The pistil is the female part of the plant It holds the structure that becomes the fruits and seeds It consists of three functional parts which are stigma style and ovary It helps in the reproductive system as when stamens or birds or bees drop pollen onto the pistil it pulls in the pollen
Definition of Ovule In the seed plants the ovule is a structure rise and consists of the female reproductive cells It has 3 parts The integument it forms its outer layer that we call a nucleus and also a remnant of the megasporangium The female gametophyte it is made from a megagametophyte we also call it the embryo sac in the angiosperms
Cell Structure and Functions Every organ in our body performs a variety of different functions such as digestion assimilation and absorption Similarly in the plants too there are different organs of the plant which performs specialized or specific functions For instance the roots of the plants help in the absorption of minerals and water
Stem Functions Structure and Types The main functions of stems are to support and elevation of leaves fruits and flowers Stem arranges leaves in a way that it gets direct sunlight to perform photosynthesis Xylem and Phloem conduct water across the plant Stems stores food water and nutrients Cells of a stem meristems produce new
A seed is made up of a seed coat and an embryo The embryo is made up of a radicle an embryonal axis and one wheat maize or two cotyledons gram and pea A seed is found inside a fruit which converts into a new plant when we plant it Hence the seed is the most important part Let us now look at the different types of seeds and study
Phloem It consists of four of elements sieve tubes companion cells phloem fibres and the phloem parenchyma Unlike the xylem phloem conducts in both directions It is responsible for transporting food from the leaves to the other parts of the plant Phloem contains living tissues except for fibres that are dead tissues
Chromosome Definition Structure Function Examples Chromosomes are thread like structures present in the nucleus They are important because they contain the basic genetic material DNA These are present inside the nucleus of plants as well as animal cells Chromosomes were first discovered by Strasburger in 1815 and the term
The petiole It is the stalk like structure which connects the leaf blade to the stem The petiole has tiny tubes that connect the veins on the leaf blade to the stem Few of these enable water transport to the leaf while the other carry food away from the leaf to other parts of the plant Some plants also contain another part called stipules
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