Horticulture MCQ Question and Answer | Agriculture MCQ Question

Ablation is a horticultural practice used for the propagation of certain palm trees. It involves the removal or cutting of the terminal bud or growing point of a palm tree. This process is typically carried out to stimulate the growth of new shoots or suckers from the trunk of the palm tree. These new shoots or suckers can then be separated and planted to grow into new palm trees.

In the context of the options provided:
Option A: Oil palm is not typically propagated through ablation. Oil palm is often propagated through seeds or tissue culture methods.
Option B: Palmyrah is a type of palm tree, and ablation can indeed be a method used for its propagation.
Option C: Coconut is another type of palm tree for which ablation can be used as a propagation method.
Option D: Both B and C implies that ablation is used for both Palmyrah and Coconut palm trees. This is correct; ablation can be used for the propagation of both Palmyrah and Coconut palm trees.

So, the correct answer is Option D: Both B and C. Ablation is a horticultural technique that can be employed for the propagation of both Palmyrah and Coconut palm trees.

All these three sex from the following options, i.e. Monoecious, Gynoeciuos, and Trimonoeciuos can be observed in cucumber.
In a monoecious cucumber plant, male flowers arise in early or lower nodes, followed by a mixture of male and female flowers at the middle nodes and ending with female flowers only in the higher nodes.
Gynoecious varieties produce only female flowers and have a more concentrated period of fruit production. There are also parthenocarpic varieties that do not need to be pollinated to produce fruit.
In cucumber, the bisexual flowers occurring in trimonoecious plants have superior ovaries (hypogynous, the normal bisexual and female flowers are epigynous), derived as a modification of staminate flowers.

The best time for the propagation of apples is December - January.
The apple is a temperate fruit crop. However, in India, the apple-growing areas do not fall in the temperate zone but the prevailing temperate climate of the region is due to the Himalayan ranges and high altitudes. The average summer temperature should be around 21 - 24°C during the active growth period.
The main methods of propagation of apples in our country are grafting, Budding and Rootstocks.
Planting is usually done in December and January.

Buttoning is a physiological disorder in cauliflower.
This disorder of cauliflower is identified by the development of small curd or 'button' while the plants are small and consequently, the curd gets open.
This is caused due to the deficiency of nitrogen, by planting seedlings older than 6 weeks, or other factors like insufficient moisture supply, water logging, hot and dry weather, carelessness in proper and timely weeding and pest and disease attack.

Male sterility in onion was first located by H. A. Jones in the year 1925.
Male sterility in plants implies an inability to produce or release functional pollen and is the result of the failure of the formation or development of functional stamens, microspores or gametes.
In onions (Allium cepa L.), cytoplasmic male-sterility (CMS) has been widely used in hybrid seed production. Two types of CMS (CMS-S and CMS-T) have been reported in onions.

The headquarters of AICVIP is located at IIVR, Varanasi.
The All India Coordinated Research Project on Vegetable crops was started during the fourth five-year plan in 1970 - 71, to provide a national network for multi-location testing of vegetable technologies.
In a significant development in 1991, headquarter of the directorate was shifted from IARI, New Delhi to Varanasi. Later on, the PDVR was elevated to the Indian Institute of Vegetable Research (ICAR-IIVR) in 1999.

Pusa Kesar is a variety of carrots.
Pusa Kesar is developed at the IARI, New Delhi. It has red-coloured roots and self-coloured core. It can tolerate higher temperatures. Suitable for sowing from August - early October. The crop matures in 90 - 110 days with an average yield of 30 t/ha.
The carrot variety Pusa Kesar can be left in the field 1 month longer than the variety Local without bolting and produces significantly fewer forked roots with a higher carotene content. The seed crop matures 15 days later than that of Local.

Tomato hybrid developed using the male sterile line is Pusa Divya.
The functional male sterility has been exploited for hybrid seed production of tomato cv. Pusa Divya. The use of male sterility reduces the cost of hybrid seed production for several reasons. It avoids hand emasculation and pollination, accelerating the hybrid breeding programs and allowing the large-scale production of hybrid seeds and the commercial exploitation of hybrid vigor.
Pusa Divya F1 matures in 70 - 90 days after transplanting. It yields firm fruits with thick skin. The fruits are round to oval in shape, and about 16 fruits will weigh one kg. This hybrid is tolerant to late blight and bucket rot diseases.

Yellow leaf disease of Arecanut is caused by MLO.
MLO is a Mycoplasma like organism, found in the young sieve elements of areca nut palms declining with yellow leaf disease in Kerala and Karnataka States.
It causes yellowing of the tips of the leaflets. And it extends to the middle of the lamina. Tips of chlorotic leaves dry up. Finally, the crown leaves fall off leaving a bare trunk. Root tips turn black and gradually rot.

Mango variety free from malformation is Sundar langra.
Mango malformation disease (MMD) is a fungal disease of mango plants that can cause abnormal flower, leaf and shoot growth.
It is from the cross Sardar Pasand × Langra.
It is regular bearing resembles Langra in shape and size. Fruits are medium-sized and sweet to taste and are regular bearing.