1
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following combination of bacterial strains used by Griffith, when injected to mice will NOT kill them?

A

Heat killed ' R '+ Live ' S '

B

Live ' R ' + Live ' S '

C

Live 'S' + Heat killed 'S'

D

Live ' R ' + Heat killed ' S '

2
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following is INCORRECT regarding 'resource partitioning'?

A

It occurs when two species compete for same resources.

B

Competition can be avoided by choosing different times for feeding.

C

It promotes co-existence.

D

It works on exclusion principle.

3
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following is NOT a traditional knowledge passed down through generations?

A

Farming practices

B

Conservation of biological diversity

C

Biologically important medicines

D

Use of genetically engineered microorganism for cleaning oil spills.

4
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Match the Column I with Column II with reference to biomagnification of DDT.

Column (I)
(Organism)
Column (II)
(DDT content)
i. Small fishes a. 0.04 ppm
ii. Fish eating Birds of Prey b. 0.5 ppm
iii. Large fishes c. 25 ppm
iv. Zooplankton d. 2.ppm
Choose the correct option:
A

i-b, ii -d, iii -c, iv -a

B

i-b, ii -c, iii -d, iv -a

C

i-c, ii-b, iii-a, iv-d

D

i-d, ii -b, iii - c, iv -a