Horticulture - Study Mode

[#511] Propagation of annual drumstick is done by
Correct Answer

(D) Seeds

Explanation

Solution: Propagation of annual drumsticks is done by Seeds. Drumstick is a small or medium-sized perennial tree of about 10 m in height with a fragile and corky stem. The leaves are usually tri-pinnate with elliptic leaflets. Pods are pendulous and their length ranges from 20 cm to 100 cm. Seeds are trigonous with wings on angles. Annual types are propagated by seeds. The average seed weight is 0.288 g and 10 g contains 35 seeds. Seeds @ 625 g/ha can be either sown in pits or transplanted after raising seedlings in polythene bags. Transplanting of seedlings can be made one month after sowing. The time of sowing of seeds for annual seed drumstick or planting of limb cuttings varies from region to region depending on receipt of monsoon.

[#512] Which of the following is a tropical type carrot cultivar?
Correct Answer

(D) Sel no. 29

Explanation

Solution: Sel No. 29 is a tropical type carrot cultivar. Based on temperature requirements, carrots are classified as temperate or European and tropical or Asiatic. The tropical cultivars do not require any low-temperature treatment for flowering. They produce flowers and seeds on plains of high temperature. Sel no. 29 is developed by PAU, Ludhiana. This is one of the quick-growing varieties. Carrots of this variety are light red in colour with long tapering roots. An average yield of 80 to 100 quintals of the crop is obtained per acre of land.

[#513] Which growth regulator is a substitute for low chilling treatment?
Correct Answer

(C) Gibberellin

Explanation

Solution: Gibberellin is the growth regulator which is the substitute for low chilling treatment. Gibberellin is a hormone that replaces vernalization. Vernalisation is the process by which plants use a prolonged cold period in winter to promote flowering. Gibberellin (GA) is the key plant hormone involved in regulating plant development. Thus, it is critical to elucidate the mechanism of the molecular regulation of vernalization and floral bud initiation to prevent premature bolting by the application of this hormone.

[#514] Running water, high protecting wall, terminal building and Baradari are the important parts of
Correct Answer

(A) Mughal garden

Explanation

Solution: Running water, high protection wall, terminal building and Baradari are important parts of the Mughal Garden. Mughal gardens are a type of garden built by the Mughals. This style was influenced by the Persian gardens. Fountain and running water was key feature of Mughal garden design. The garden might include a raised hillock at the centre, reminiscent of the mountain at the centre of the universe in cosmological descriptions and often surmounted by a pavilion or palace. Important examples of this architecture are the Taj Mahal, Charbagh, etc.

[#515] Which of the following is a parthenocarpic for jam making grape variety
Correct Answer

(C) Black corianth

Explanation

Solution: Black corianth is a parthenocarpic variety of grapes used for making jams. Black Corinth is one of the varieties of grapes, in this pollination and fertilization take place but the embryo gets aborted subsequently resulting in seedlessness. This phenomenon of development of seedless fruits is referred to as ‘parthenocarpy’. The seedlessness or parthenocarpic fruits are advantageous since there is a greater preference among the consumers for seedless fruits and especially for making jams.