Question
What is the lymphatic system? Describe the functions of the lymph.

Answer

The lymphatic system is also known as the secondary or accessory circulation system. It comprises lymph capillaries, lymph vessels, lymph nodes, and other lymphatic organs.
Functions of Lymph :
1. It acts as a middleman between blood and tissue fluid.
2. It maintains a balance of fluid outside and inside cells, creating a watery environment around the cells.
3. It contains white blood cells that engulf bacteria and protect the body from pathogens.
4. It absorbs fat from the small intestine into the lymph capillaries.
5. It sends the plasma portion of blood that leaks from capillary blood vessels back into the bloodstream through the lymphatic vessels.
6. It assists in protecting the soft tissues of the body, maintaining moisture around organs, and preventing friction between them.
7. It returns proteins from tissue fluid back into the blood.

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(1) Viruses are made up of:
(a) Proteins & DNA
(b) Proteins only
(c) Proteins & RNA
(d) Proteins & DNA / RNA

(2) Bacteriophages are usually :
(a) Single stranded DNA viruses
(b) Double stranded RNA viruses
(c) Double stranded DNA viruses
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(3) Which is not a viral disease of humans:
(a) Pneumonia (b) Herpes (c) Mumps (d) Smallpox

(4) Select the incorrect statement regarding Capsomeres:
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(b) Capsomeres are made of peptidoglycans
(c) Capsomeres may be arranged in helix or polyhedron
(d) Capsomeres are made of proteins

(5) Which of these is not a symptom of viral infection in crops:
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(1) Lipids mainly consist of
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(c) carbon hydrogen and oxygen
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(2) Among the given options non-polymeric molecule is
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(3) An example of unsaturated fatty acid is
(a) oleic acid (b) stearic acid (c) Linoleic acid (d) both a and c

(4) The number of carbon atoms as compared to oxygen atoms in lipids is
(a) same (b) much less (c) much more (d) none of these.

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(1). Carrot is a
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(2). Hanging structures that support a banyan are
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(4). Which function is performed by the modified roots of Asparagus?
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