Agronomy - Study Mode

[#351] The ploidy level of Pusa Bedana (Seedless Watermelon)
Correct Answer

(C) Triploid

Explanation

Solution: Pusa bedana is the seedless variety of watermelon developed at IARI, Pusa. It is a triploid variety of watermelon. It was developed by crossing Tetra-2 (a tetraploid) with Pusa rasaal (a diploid). A seedless watermelon is a sterile hybrid that is created by crossing the male pollen (22 chromosomes) of a watermelon with a female watermelon flower (44 chromosomes per cell).

[#352] If on a 20 acre farm, crops are raised on 15 acres in rabi, 15 acres in kharif and 20 acres in zaid in a year, what shall be the cropping intensity
Correct Answer

(A) 250%

Explanation

Solution: Cropping intensity is the ratio of gross area sown to the net area sown. It refers to growing several crops in the same field during one agricultural year. $$eqalign{
& { ext{Cropping Intensity}} cr
& = frac{{{ ext{Gross Croped Area}}}}{{{ ext{Net Sown Area}}}} imes 100 cr
& = frac{{50}}{{20}} imes 100 cr
& = 250\% cr} $$ Gross cropped area = 50 Net Sown area = 20

[#353] Groundnut was introduced into India by
Correct Answer

(D) Jesuit Father

Explanation

Solution: Groundnuts probably originated in Peru or Brazil in South America. It was introduced into India by Jesuit Fathers (missionaries) in the first half of the 16 th century. It was introduced in Gujarat by Shri Padmabhai Patel (Rajkot) from Tamil Nadu. It is a leguminous crop cultivated for edible purposes, and it is an oil seed too. It is grown exclusively in tropical and subtropical regions.

[#354] Which of the following plants does not show photorespiration
Correct Answer

(D) Maize

Explanation

Solution: Photorespiration is the process in plant metabolism where the enzyme RuBisCO oxygenates RuBP, wasting some of the energy produced by photosynthesis. C4 plants do not show photorespiration as these plants maintain a high concentration of carbon dioxide in the bundle sheath cells and the absence of grana ensures no release of oxygen due to photolysis. Thus, photorespiration is absent in such plants. And maize is one of the C4 plants.

[#355] Central Arid Zone Research Institute is located at
Correct Answer

(B) Jodhpur

Explanation

Solution: The Central Arid Zone Research Institute (CAZRI) was established in 1952 under the Indian Council of Agricultural Research, New Delhi and is headquartered in Jodhpur, Rajasthan. It has the distinction of being the world's first institute that is exclusively devoted to agricultural research and development in an arid zone. It aims to conduct multidisciplinary research to seek solutions to the problems faced by farmers in the arid zone.