The most readily mobilised elements from older dying leaves are

(1) P,K

(2) S,N

(3) N

(4) All of these

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Which of the following is a part of structure and is not remobilised?

(1) K

(2) N

(3) Ca

(4) S

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Which of the following is incorrect statement?

(1) An analysis of xylem exudate suggests that some of the nitrogen travels as inorganic ions and much of it is carried in the organic form as amino acids

(2) Small amount of P and S is also carried as inorganic compounds in xylem exudate

(3) There is exchange of material between xylem and phloem

(4) Xylem transports inorganic nutrients while phloem transports organic materials, this observation was proved wrong by the analysis of xylem exudate

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The source and sink may be reversed

(1) Depending on the season

(2) Depending on the plant's needs

(3) Depending on the phloem type

(4) Both A and B

Subtopic:  Ascent of Sap |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Phloem sap is mainly

(1) Water and minerals

(2) Water and sucrose

(3) Hormones and amino acid

(4) Hormones and sucrose

Subtopic:  Ascent of Sap |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Which of the following is an accepted mechanism for translocation of sugars from source to sink?

(1) Cohesion Flow hypothesis

(2) Pressure Flow hypothesis

(3) Mass fusion hypothesis

(4) Tension flow hypothesis

Subtopic:  Phloem Translocation |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Girdling experiment suggests that

(1) Xylem is for water and mineral transport

(2) Phloem is for translocation of food

(3) Transport in phloem is multi directional as well

(4) The portion below the ring becomes swollen due to water

Subtopic:  Phloem Translocation: Short Distance Transport |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The loading at source in the phloem is

(1) Diffusion

(2) Pressure flow

(3) Active transport

(4) Imbibition

Subtopic:  Phloem Translocation |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The unloading at sink from phloem is

(1) Diffusion

(2) Facilitated Diffusion

(3) Active transport

(4) Imbibition

Subtopic:  Phloem Translocation |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


At the time of unloading of phloem, which of the following does not happen?

(1) High water potential in phloem

(2) Returning of water to sink

(3) Active transport of sucrose to sink

(4) All of these

Subtopic:  Phloem Translocation |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: