Match the following:

NEET-(Oct)2020 [Biomolecules] [class-xi ]

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

Remark:

Attachment of spindle fibers to kinetochores of chromosomes becomes evident in:

NEET-(Oct)2020 [Cell-Cycle-and-Cell-Division] [class-xi ]

• Anaphase
• Telophase
• Prophase
• Metaphase
Correct Option: D  [ Metaphase ]

Remark:

In a mitotic cycle, the correct sequence of phases is:

NEET-(Oct)2020 [Cell-Cycle-and-Cell-Division] [class-xi ]

• S, G₁, G₂, M
• G₁, S, G₂, M
• M, G₁, G₂, S
• G₁, G₂, S, M
Correct Option: B  [ G₁, S, G₂, M ]

Remark:

Match the following events that occur in their respective phases of cell cycle and select the correct option:

NEET-(Oct)2020 [Cell-Cycle-and-Cell-Division] [class-xi ]

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

Remark:

During Meiosis 1, in which stage synapsis takes place?

NEET-(Oct)2020 [Cell-Cycle-and-Cell-Division] [class-xi ]

• Pachytene
• Zygotene
• Diplotene
• Leptotene
Correct Option: B  [ Zygotene ]

Remark:

Select the incorrect statement.

NEET-(Oct)2020 [Transport-in-Plants] [class-xi ]

• Transport of molecules in phloem can be bidirectional.
• Movement of minerals in xylem is unidirectional.
• Unloading of sucrose at sink does not involve the utilization of ATP.
• Elements most easily mobilized in plants from one region to another are: phosphorus, sulphur, nitrogen and potassium.
Correct Option: C  [ Unloading of sucrose at sink does not involve the utilization of ATP. ]

Remark:

In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as:

NEET-(Oct)2020 [Mineral-Nutrition] [class-xi ]

• Ammonia
• Glutamate
• Nitrates
• Ureides
Correct Option: D  [ Ureides ]

Remark:

Which of the following statements is incorrect?

NEET-(Oct)2020 [Photosynthesis-in-Higher-Plants] [class-xi ]

• RuBisCO is a bifunctional enzyme
• In C₄ plants, the site of RuBisCO activity is mesophyll cell
• The substrate molecule for RuBisCO activity is a 5-carbon compound
• RuBisCO action requires ATP and NADPH
Correct Option: B  [ In C₄ plants, the site of RuBisCO activity is mesophyll cell ]

Remark:

During non-cyclic photophosphorylation, when electrons are lost from the reaction centre at PS II, what is the source which replaces these electrons?

NEET-(Oct)2020 [Photosynthesis-in-Higher-Plants] [class-xi ]

• Oxygen
• Water
• Carbon dioxide
• Light
Correct Option: B  [ Water ]

Remark:

Pyruvate dehydrogenase activity during aerobic respiration requires:

NEET-(Oct)2020 [Respiration-in-Plants] [class-xi ]

• Calcium
• Iron
• Cobalt
• Magnesium
Correct Option: D  [ Magnesium ]

Remark: