STD 11 - 4. Animal kingdom — NEET STD 11 Science — Question

Darwin's theory of natural selection to explain organic evolution was based on

Mark the given statements True (T) or False (F).
(i) William Harvey discovered blood circulation and disproved 'bad humor' hypothesis of health.
(ii) Health is defined as a state of complete physical, mental and social well-being.
(ii) Disease causing organisms are called pathogen.
(iv) Salmonella typhi bacterium causes typhoid fever in humans.
(v) Sustained high fever, weakness, stomach pain, constipation, headache and loss of appetite are common symptom of influenza disease.
(vi) Typhoid fever is confirmed by widal test.
(vii) A classical case in medicine in spread of typhoid by a female named Mary mallon nicknamed Typhoid Mary has been reported.
(viii) Bacteria like Streptococcus pneumoniae and Haemophilus influenzae are responsible for the disease pneumonia in humans infects alveoli.
(ix) Rhino viruses cause most common infectious human ailments common cold, which usually last for 3-7 days.
(x) Different species of Plasmodium: P. Vivax, P. Malaria and P.Falciparum are responsible for causing malaria. Malignant malaria is caused by P. Vivax.
(xi) Plasmodium enters human body as sporozoites through bite of infected female anopheles mosquito.
(xii) During malaria, the rupture of RBCs is associated with release of toxic subastance haemozoin.
(xiii) In malaria the Plasmodium parasite reproduces sexually in liver cells and forms gametocytes (sexual stage) in RBCs in humans.
Choose the correct option given below :-

The golden age of reptiles was

Select true statement for Aschelminthes.
(i) Alimentary canal is complete with a well developed muscular pharynx.
(ii) An excretory tube removes body wastes from the body cavity through the excretory pore.
(iii) They may be free living, aquatic and terrestrial or parasitic in plants and animals.
(iv) They are monoecious, fertilisation is internal and development may be direct or indirect.
(v) Ancylostoma is bilaterally symmetrical, triploblastic and pseudocoelomate animals.

Which part of the brain is like a defense castle controlling moods and plays an important role in emotional behaviour, such as aggression and remembering fear?

Volume of air remains in the lungs after normal expiration is

Fever in malaria is due to