Movement and accumulation of ions across a membrane against their concentration gradient can be explained by:

NEET-2023 [Transport-in-Plants] [class-xi ]

• Active Transport
• Osmosis
• Facilitated Diffusion
• Passive Transport
Correct Option: A  [ Active Transport ]

Remark:

Given below are two statements:
Statement I: The forces generated by transpiration can lift a xylem-sized column of water over 130 meters height.
Statement II: Transpiration cools leaf surfaces sometimes 10 to 15 degrees, by evaporative cooling.
In the light of the above statements, choose the most appropriate answer from the options given below:

NEET-2023 [Transport-in-Plants] [class-xi ]

• Statement I is incorrect but Statement II is correct.
• Both Statement I and Statement II are correct.
• Both Statement I and Statement II are incorrect
• Statement I is correct but Statement II is incorrect.
Correct Option: B  [ Both Statement I and Statement II are correct. ]

Remark:

Which micronutrient is required for splitting of water molecule during photosynthesis?

NEET-2023 [Mineral-Nutrition] [class-xi ]

• copper
• manganese
• molybdenum
• magnesium
Correct Option: B  [ manganese ]

Remark:

How many ATP and NADPH, are required for the synthesis of one molecule of Glucose during Calvin cycle?

NEET-2023 [Photosynthesis-in-Higher-Plants] [class-xi ]

• 18 ATP and 16 NADPH₂
• 12 ATP and 12 NADPH₂
• 18 ATP and 12 NADPH₂
• 12 ATP and 16 NADPH₂
Correct Option: C  [ 18 ATP and 12 NADPH₂ ]

Remark:

The reaction centre in PS II has an absorption maxima at:

NEET-2023 [Photosynthesis-in-Higher-Plants] [class-xi ]

• 780 nm
• 680 nm
• 700 nm
• 660 nm
Correct Option: B  [ 680 nm ]

Remark:

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: ATP is used at two steps in glycolysis.

Reason R: First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6- phosphate into fructose-1-6-diphosphate.

In the light of the above statements, choose the correct answer from the options given below is true:

NEET-2023 [Respiration-in-Plants] [class-xi ]

• A is false but R is true.
• Both A and R are true and R is the correct explanation of A
• Both A and R are true but R is NOT the correct explanation of A.
• A is true but R is false.
Correct Option: B  [ Both A and R are true and R is the correct explanation of A ]

Remark:

Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?

NEET-2023 [Plant-Growth-and-Development] [class-xi ]

• Abscisic Acid
• Indole-3-butyric Acid
• Gibberellic Acid
• Zeatin
Correct Option: C  [ Gibberellic Acid ]

Remark:

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: ATP is used at two steps in glycolysis.
Reason R: First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6- phosphate into fructose-1-6-diphosphate.
In the light of the above statements, choose the correct answer from the options given below is true,

NEET-2023 [Plant-Growth-and-Development] [class-xi ]

• Senescence
• Differentiation
• Dedifferentiation
• Development
Correct Option: C  [ Dedifferentiation ]

Remark:

Which hormone promotes intemode/petiole elongation in deep water rice?

NEET-2023 [Plant-Growth-and-Development] [class-xii ]

• 2, 4-D
• GA₃
• Kinetin
• Ethylene
Correct Option: D  [ Ethylene ]

Remark:

Large, colourful, fragrant flowers with nectar are seen in:

NEET-2023 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• wind pollinated plants
• insect pollinated plants
• bird pollinated plants
• bat pollinated plants
Correct Option: B  [ insect pollinated plants ]

Remark: