Practice Pakistan's most useful MCQs for competitive exams

Xanthophylls are _________ pigments

• (A)  Yellow
• (B)  Red
• (C)  Orange
• (D)  Green

Answer

Submitted By :Ali Uppal

Chlorophylls are found embedded in the __________ membranes?

• (A)  Stroma
• (B)  Grana
• (C)  Thylakoid
• (D)  Intergrana

Answer

Submitted By :Ali Uppal

The dense fluid filled region in the chloroplast is____________?

• (A)  Grana
• (B)  Stroma
• (C)  Thylakoid
• (D)  None of these

Answer

Submitted By :Ali Uppal

Photosystem II has molecules which absorbs maximum light of___________?

• (A)  680 nm
• (B)  100 m
• (C)  700 nm
• (D)  670 nm

Answer

Submitted By :Ali Uppal

In all plants the major sites of phosynthesis are___________?

• (A)  Leaves respire and utilize O2 and release CO2.
• (B)  Stems
• (C)  Roots
• (D)  Branches

Answer

Submitted By :Ali Uppal

Of the following, which one light – gathering?

• (A)  Antenna complex
• (B)  Reaction centre
• (C)  Photosystem
• (D)  None of these

Answer

Submitted By :Ali Uppal

Thylakoids in chloroplasts are stacked into___________?

• (A)  Grana
• (B)  Stroma
• (C)  Nucleus
• (D)  None of these

Answer

Submitted By :Ali Uppal

NADPH2 provides___________?

• (A)  assimilatory power
• (B)  chemical energy
• (C)  energized electrons
• (D)  All of these

Answer

Submitted By :Ali Uppal

Light reaction takes place on/in____________?

• (A)  Thylakoid
• (B)  Storma
• (C)  Chloroplast
• (D)  Grana

Answer

Submitted By :Ali Uppal

From one pyruvate passing through Kreb’s cycle, how many NADH are formed?

• (A)  1
• (B)  2
• (C)  3
• (D)  4

Answer

Submitted By :Ali Uppal