<span>In plant anatomy, sieve tube elements, also called sieve tube members, are a specialised type of elongated cell in the phloem tissue
of flowering plants. The ends of these cells are connected with other
sieve tube members, and together they constitute the sieve tube.
Hope this help!
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Crossing-over never occurs between genes. Hope this helped :)
<span>The correct answer is ‘Aristotle’. Aristotle and Plato developed the idea of ranked classification. Ranked classification involves two names, one for the genus and a second part. For example, in ‘Canis lupus’ (wolf), ‘Canis’ is the genus name and shared by all close relatives, and ‘lupus’ is specific to the wolf.</span>
Diffusion is the spontaneous movement of substances from a region of high concentration to a region of low concentration.
Osmosis is the passage of water molecules from a high water concentration region through a selectively permeable membrane to a low water concentration region.
In diffusion, selectively permeable membrane is neither required nor involved while in osmosis, it is involved.
