54. Which among the following statement is TRUE?

டு Water absorbed by the roots reaches the top of a tree by transpiration pull and cohesion
of water molecules.

(ii) Conduction of sap in old plants when heart wood decayed occurs through phloem.

(iii) Warburg effect is associated with bidirectional transport of xylem sap.

(iv) Parthenocarpic fruits are produced by spraying auxins on flowers.

(A)

(0
55.

(A)

(0

(i) and (ii) (B) (i and (iv)

(1) and (iii) (D) (ii) and (iv)

is the hydrogen transporter in the photosynthetic electron transport system.
Cytochrome f ൯) Pheophytin

Plastocyanin ൯) Plastoquinone

56. Which one of the following statements is NOT applicable to the experimental set up of
Munch’s mass flow hypothesis given below. Here chamber A contains concentrated sugar
solution and chamber B contains dilute sugar solution.

(A)
(0)
(0

(D)

Turgor pressure gradient is responsible for mass flow from A to B through C
Chamber A rapidly absorbs water and result in high TP

The water from chamber B will diffuse out and can again pass through the
chamber A

The flow from A to B through C cannot be prolonged even after maintaining a
continuous supply of sugar solution to chamber A

57. Morphologically useful and edible part in pineapple is :

(A)
(0)
(0
(D)

161/2023-M

Peduncle, bracts, perianth and pericarp
Pericarp and thalamus
Pericarp and placenta

Exocarp and mesocarp

12 A