TLS Online TPP Program

#Question id: 4619


Within six months of effectively using methicillin to treat S. aureus infections in a community, all new S.aureus infections were caused by MRSA. How can this best be explained?

#Section 2: Evolution
  1. A patient must have become infected with MRSA from another community.

  2.  In response to the drug, S. aureus began making drug-resistant versions of the protein targeted by the drug.

  3. Some drug-resistant bacteria were present at the start of treatment, and natural selection increased their frequency.

  4. S. aureus evolved to resist vaccines.

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TLS Online TPP Program

#Question id: 10691

#Section 2: Evolution

Following some attributes of biological control agent of parasite

A) General adaptability to the environment.

B) High searching capacity for hosts.

C) K selected strategy

D) Low dispersal ability.

E) Minimal time lag effects in responding to changes in host numbers.

Following above attribute is not ideal for that biological agent?

TLS Online TPP Program

#Question id: 10692

#Section 2: Evolution



TLS Online TPP Program

#Question id: 10694

#Section 2: Evolution

Which of the following is characteristic of parasitoid/ predators?

a) consumer usually larger than resource

b) Consumer requires one host for complete development.

c) Habitat independent

d) Consumer takes long time to kill host

e) Consumer never kills their host

f) Host is free living

Which of the following is feature of parasitoid?

TLS Online TPP Program

#Question id: 10695

#Section 2: Evolution

Consumer (+) and resource (-) interactions classified by the two factor

T- Duration or intimacy of the association between individuals

Kp- Probability that resource individuals will be killed

Which of the following some statement are correct?

A-  Value of T for Grazer is greater than parasite

B-  Value of Kp for predator is greater than parasite

C-  Value of Kp for parasite is greater than parasitoid

D-  Value of T for parasitoid is greater than predator


TLS Online TPP Program

#Question id: 10696

#Section 2: Evolution

In a new area two species A and B was discovered and taking energy from another species X and Y respectively. Following some is life history trait of species.

I- A species is often larger than X

II- Each A species taking energy from many X

III- One Y usually supports populations of B species

IV- Fatality of Y is Mild to severe

Which of the following is correct observation of above species?

TLS Online TPP Program

#Question id: 10697

#Section 2: Evolution

Which of the following is correct observation of above species?