List of top Horticulture Questions on Plant Physiology

Arrange the following steps of Calvin cycle in correct sequence:
A. Reduction,
B. Regeneration of RuBP,
C. Carboxylation,
D. Formation of glucose, E. Formation of triose phosphate. Choose the correct answer from the options given below:

Choose the gaseous hormone among the following:

Specialized internal membrane of chloroplast responsible for light reaction:

In plants, transportation of metabolites from shoot to root occurs through:

Match List-I with List-II
\[\begin{array}{|l|l|} \hline \textbf{List-I} & \textbf{List-II} \\ \textbf{Use of PBR/ Chemical} & \textbf{Name of PBR/ Chemical} \\ \hline \text{(A). Rooting of cuttings} & \text{(I). Acid treatment} \\ \hline \text{(B). Seed scarification} & \text{(II). BA+ Beta NOA} \\ \hline \text{(C). Parthenocarpy in Mango} & \text{(III). IBA} \\ \hline \text{(D). Induction of flowering in Pineapple} & \text{(IV). Ethephon} \\ \hline \end{array}\]
Choose the correct answer from the options given below:

Maleic hydrazide is used to

Match List-I with List-II
\[\begin{array}{|l|l|} \hline \textbf{List-I} & \textbf{List-II} \\ \textbf{PGR} & \textbf{Practical utility} \\ \hline \text{(A). Auxins} & \text{(I). Fruit ripening} \\ \hline \text{(B). Gibberellins} & \text{(II). Root induction} \\ \hline \text{(C). Cytokinin} & \text{(III). Germination} \\ \hline \text{(D). Ethephon} & \text{(IV). Shoot proliferation} \\ \hline \end{array}\]
Choose the correct answer from the options given below:

What is the descending order of rate of respiration in following vegetables?
(A). Bean
(B). Onion
(C). Asparagus
(D). Beet
Choose the correct answer from the options given below:

Pineapple is a

Strawberry is a typically

Firmness of fruit during storage

Which of the following is a critical parameter for drought tolerance in dryland fruits?

Sapota fruits are highly perishable and ripen within 5-7 days.
(A). Sapota is a climacteric fruit
(B). Fruits of sapota can be harvested at physiological maturity
(C). Sapota can be ripened artifically for use as table fruit
(D). Sapota can be stored in a refrigerator for nearly six months
Choose the correct answer from the options given below:

Which of the following hormones increases the respiration rate during storage?

All fruit, vegetable as well as flowers have to go through a certain stage of growth and maturity in their life cycle before they can reproduce sexually. This stage is known as

On the basis of ripening behaviour, choose the non climacteric fruits
(A). Litchi
(B). Grape
(C). Jackfruit
(D). Pineapple
Choose the correct answer from the options given below:

Match List-I with List-II
\[\begin{array}{|l|l|} \hline \textbf{List-I} & \textbf{List-II} \\ \textbf{Physiological disorders} & \textbf{Deficiency / Toxicity} \\ \hline \text{(A). Blossom end rot} & \text{(I). B deficiency} \\ \hline \text{(B). Fruit cracking} & \text{(II). Ca deficiency} \\ \hline \text{(C). Interveinal chlorosis} & \text{(III). Cl toxicity} \\ \hline \text{(D). Leaf scorching} & \text{(IV). Mg deficiency} \\ \hline \end{array}\]
Choose the correct answer from the options given below:

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Tuberization in sweet potato is almost absent at 75% shade and severely affected at 55% shade and not much affected at 25% shade.
Reason (R): Warm sunny days and cool nights are favourable for better tuber development in sweet potato.
In light of the above statements, choose the correct answer from the options given below.

The following statements about onion are given below
(A). Temperature is comparatively more important for bulb formation
(B). Photoperiod is more important for flowering
(C). Long day onion varieties do not bulb under short day conditions
(D). Genetic constitution of the male sterility maintainer is Nmsms.
Choose the correct answer from the options given below:

Red colour of beet root is due to

What is the family of Rhubarb?

Given below are two statements:
Statement (I): The growth of guava fruits follow a single sigmoid curve
Statement (II): The fruits undergo extensive cell division during the first few week immediately following fertilization

Various forms of gibberellins are abundant during which stage of fruit development?

Which plant bio regulator blocks the synthesis of gibberellin?