Embryological support for evolution was proposed by:

NEET-(Oct)2020 Evolution [class-xii ]

• Ernst Heckel
• Karl Ernst von Baer
• Charles Darwin
• Alfred Wallace
Correct Option: A  [ Ernst Heckel ]

Remark:

The phenomenon of evolution of different species in a given geographical area starting from a point and spreading to other habitats is called:

NEET-(Oct)2020 Evolution [class-xii ]

• Saltation
• Co-evolution
• Natural selection
• Adaptive radiation
Correct Option: D  [ Adaptive radiation ]

Remark:

A Hominid fossil discovered in Java in 1891, now extinct, having cranial capacity of about 900 cc was:

NEET-(Oct)2020 Evolution [class-xii ]

• Homo erectus
• Neanderthal man
• Homo sapiens
• Australopithecus
Correct Option: A  [ Homo erectus ]

Remark:

Match the following columns and select the correct option:

NEET-(Oct)2020 Human-Health-and-Disease [class-xii ]

• (I)-(D), (II)-(C), (III)-(A), (IV)-(B)
• (I)-(C), (II)-(D), (III)-(B), (IV)-(A)
• (I)-(A), (II)-(C), (III)-(B), (IV)-(D)
• (I)-(A), (II)-(B), (III)-(D), (IV)-(C)
Correct Option: A  [ (I)-(D), (II)-(C), (III)-(A), (IV)-(B) ]

Remark:

The yellowish fluid "colostrum" secreted by mammary glands of mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant. This type of immunity is called as:

NEET-(Oct)2020 Human-Health-and-Disease [class-xii ]

• Passive immunity
• Active immunity
• Acquired immunity
• Autoimmunity
Correct Option: A  [ Passive immunity ]

Remark:

Match the following diseases with the causative organism and select the correct option.

NEET-(Sept)2020 Human-Health-and-Disease [class-xii ]

• (A)-(I), (B)-(III), (C)-(II), (D)-(IV)
• (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
• (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
• (A)-(IV), (B)-(I), (C)-(II), (D)-(III)
Correct Option: B  [ (A)-(III), (B)-(IV), (C)-(I), (D)-(II) ]

Remark:

The infectious stage of Plasmodium that enters the human body is:

NEET-(Sept)2020 Human-Health-and-Disease [class-xii ]

• Trophozoites
• Sporozoites
• Female gametocytes
• Male gametocytes
Correct Option: B  [ Sporozoites ]

Remark:

Identify the wrong statement with reference to immunity.

NEET-(Sept)2020 Human-Health-and-Disease [class-xii ]

• When exposed to antigen (living or dead) antibodies are produced in the host’s body. It is called "Active immunity".
• When ready-made antibodies are directly given, it is called "Passive immunity".
• Active immunity is quick and gives full response.
• Foetus receives some antibodies from mother, it is an example for passive immunity.
Correct Option: C  [ Active immunity is quick and gives full response. ]

Remark:

Cyclosporin A, used as immuno suppression agent, is produced from:

NEET-(Oct)2020 Microbes-in-Human-Welfare [class-xii ]

• Monascus purpureus
• Saccharomyces cerevisiae
• Penicillium notatum
• Trichoderma polysporum
Correct Option: D  [ Trichoderma polysporum ]

Remark:

Match the following columns and select the correct option:

NEET-(Oct)2020 Microbes-in-Human-Welfare [class-xii ]

• (A)-(III), (B)-(V), (C)-(IV), (D)-(I)
• (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
• (A)-(II), (B)-(III), (C)-(IV), (D)-(V)
• (A)-(II), (B)-(IV), (C)-(V), (D)-(III)
Correct Option: D  [ (A)-(II), (B)-(IV), (C)-(V), (D)-(III) ]

Remark: