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Solving time: 5 mins

In poultry the disease Coryza is caused by

A
Bacteria

B
Protozoan

C
Virus

D
Fungi

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coryza discase Respiratory disease in poultry is caused by Bacteria.
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BIOLOGY ptake, or a all parts of gions of the developing g of mineral tive uptake from older, eral content ts, minerals obilised are ents that are some of the the organic all amounts mall amount and phloem categorically transports SINK TRANSPORT IN PLANTS 1.6.1 The Pressure Flow or Mass Flow Hypothesis e accepted mechanism used for the (ranslocation of sugars from source sink is called the pressure flow hypothesis. (see Figure 11.10). As ucose is prepared at the source (by photosynthesis) it is converted to rose (a dissacharide). The sugar is then moved in the form of sucrose the companion cells and then into the living phloem sieve tube cells active transport. This process of loading at the source produces a pertonic condition in the phloem. Water in the adjacent xylem moves to the phloem by osmosis. As osmotic pressure builds up the phloem will move to areas of lower pressure. At the sink osmotic pressure st be reduced. Again active transport is necessary to move the sucrose of the phloem sap and into the cells which will use the sugar - verting it into energy, starch, or cellulose. As sugars are removed, the otic pressure decreases and water moves out of the phloem. To summarise, the movement of sugars in the phloem begins at the urce, where sugars are loaded (actively transported) into a sieve tube. ding of the phloem sets up a water potential gradient that facilitates emass movement in the phloem. Phloem tissue is composed of sieve tube cells, which form long columns holes in their end walls called sieve plates. Cytoplasmic strands pass gh the holes in the sieve plates, so forming continuous filaments. As prostatic pressure in the sieve tube of phloem increases, pressure flow s, and the sap moves through the phloem. Meanwhile, at the sink, ming sugars are actively transported out of the phloem and removed sue phloem dd to be that and sink, the sink may be ugar stored early spring growth and source-sink phloem can trasts with ctional, i.e.. ration, food tion so long e or remove 5. hormones ugh phloem. Tip of stem- Sugars leave sieve tubes: water follows by osmosis 899 Sugar solution flows to regions of low turgor pressure Phloem Sugars enter steve tubes: water follows by osmosis Sugars leave sleve tube for metabolism and storage: water follows by osmosis 888 Root High turgor pressure Figure 11.10 Diagrammatic presentation of mechanism of translocation 191
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Question Text
In poultry the disease Coryza is caused by
TopicStrategies for Enhancement in Food Production
SubjectBiology
ClassClass 12
Answer TypeText solution:1
Upvotes54