MCQ
Lymph glands and nodes help to
- AExcrete the urea
- BEliminate the ammonia
- CPrepare blood
- ✓Destroy the bacteria
✓
Answer
Correct option: D.
Destroy the bacteria
d
(d) Lymph nodes, spleen, thymus and tonsils, all produce lymphocyte which antibodies that destroy bacteria and foreign cells and viruses that invade the body
(d) Lymph nodes, spleen, thymus and tonsils, all produce lymphocyte which antibodies that destroy bacteria and foreign cells and viruses that invade the body
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Rivet popper hypothesis assumes the ...$A$... to be an aeroplane and the $\ldots B$... to be the rivets, joining all parts together: Here $A$ and $B$ refers to
→Assertion : Plasmids are extrachromosomal $DNA$.
→Reason : Plasmids are found in bacteria and are useful in genetic engineering.
How many codes are blank
It was the face of a primitive man called Australopithecus.
$A$ : Cattle or goat never graze on Calotropis.
$R$ : Thorns are present as a morphological means of defence
→$R$ : Thorns are present as a morphological means of defence
Homo erectus lived about
The formula for exponential population growth is
Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$ :
→Assertion $A$ : Breast-feeding during initial period of infant growth is recommended by doctors for bringing a healthy baby.
Reason $R$ : Colostrum contains several antibodies absolutely essential to develop resistance for the new born baby.
In the light of the above statements, choose the most appropriate answer from the options given below:
Diagram showing entry of pollen tube to the embryo sac. Identify $A$ to $G$ in the diagram
→Melting of DNA at 70o C is due to breakdown of: