Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Types of cells in Phloem
The phloem consists of 4 types of cells: i).sieve elements, ii) companion cells, iii) phloem parenchyma and sometimes iv) phloem fibres. The metabolites flow only in sieve elements which resemble hollow pipelines referred to as cellular channels. The sieve tube elements are devoid of nucleus but plastids and mitochondria are present.
Figure: Fine structure of phloem showing a full sieve tube element, its companion cell and other cells of phloem. The sieve plate pores are circular openings in the cell walls of adjacent sieve element (inset).
The cell lumen of the sieve element appears open except for transcellular strands that merge with neighbouring sieve cells at the sieve pore plate via plasmodesmata. The continuity of plasmalemma and cytoplasm makes the sieve tubes a longitudinally extending symplast. Do you remember as to what the xylem vessels form, symplast or apoplast?
Explain Nevirapine and its adverse effects Nevirapine (NVP,Viramune) - Nevirapine is most effective at raising CD4 cell counts and lowering viral load when combined with 2 NRTI
S i m p l e indigestion The disease is common in stall-fed individuals. Consumption of indigestible food material, moldy and nutritionally unbalanced feed results in simpl
Aortic Valve Repair : In, acquired AR associated with VSD and prolapse of a cusp, repair is often successful. VSD is closed and at the same time the prolapsed part of
types of parthenocarpy
SPECIATION - Origin of new species: An isolated population of a species independently develops different types of mutations. The later accumulate in its gene pool. Afte
Characteristics of Metazoa The unicellular protozoans are highly versatile and successful organisms that show remarkable organization and division of labour within the confine
Explain the Treatment Options after Endodontic Failure a) Non-surgical retreatment "re-endo", b) Root-end surgery "if there is a will detected mistake as separated instrumen
Intracellular sodium concentration of the motor neuron A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM. The neuron is healthy.
Where are blood cells made in the body? Blood cells are made in the red bone marrow, e.g. in the ribs, sternum or vertebrae.
Q. What are the hormones secreted by the adrenal medulla? What are their respective functions? The medullary portion of the adrenals secretes hormones of the catecholamine grou
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd