Biological Classification

3 Questions Start NEET Test
2019 Q1 AIIMS MCQ
10 Mar 2026

Which statement is correct?

A.
Mycoplasma is smallest and wall less living organism
B.
Influenza and herpes caused by virus having DNA and RNA
C.
Nostoc and Anabaena are important decomposer
D.
Methanogen are methane producing bacteria in wheat crop
2019 Q2 AIIMS MCQ
10 Mar 2026

Match the following columns and choose the correct option from the codes given below.

Column I Column II
A. Chrysophyte (i) Gonyaulax
B. Dinoflagellate (ii) Euglena
C. Euglenoids (iii) Diatom
D. Slime moulds (iv) Plasmodium

A.
A - (i), B - (iii), C - (ii), D - (iv)
B.
A - (i), B - (iv), C - (ii), D - (iii)
C.
A - (iii), B - (ii), C - (iv), D - (i)
D.
A - (iii), B - (i), C - (ii), D - (iv)
2018 Q3 AIIMS MCQ
10 Mar 2026

Which one of the following organisms do not evolve oxygen during photosynthesis?

A.
Blue-green algae
B.
Red algae
C.
Photosynthetic bacteria
D.
$\mathrm{C}_4$ plants