Genetics And Plant Breeding - Study Mode

[#966] The number of phases involved in Seed certification is
Correct Answer

(B) 5

Explanation

Solution: The number of phases involved in Seed certification is 5. Seed certification is a legally sanctioned system for quality control of seed multiplication and production. Seed Certification is carried out in 5 broad phases listed: 1. Verification of seed source, class and other requirements of the seed used for raising the seed crop. 2. Inspection of the seed crop in the field to verify its conformity to the prescribed field standards. 3. Supervised at post-harvest stages including processing and packing. 4. Drawing of samples and arranging for analysis to verify conformity to the seed standards
and 5. Grant of certificate, issue of certification tags, labeling, sealing etc.

[#967] Ovule is attached to the placenta with a slender stalk, known as
Correct Answer

(C) Hilum

Explanation

Solution: The ovule is attached to the placenta with a slender stalk, known as the Hilum. A hilum is a scar or mark left on a seed coat by the former attachment to the ovary wall or the funiculus. Hilum represents the junction of the ovule with the funicle in a seed. A hilum can also be a nucleus of a starch grain
the point around which layers of starch are deposited. On a bean seed, the hilum is called the "eye".

[#968] Match the following columns: Column I (Term) Column II (Brief description) a. Cell culture 1. Regeneration of a plant from a single cell in nutrient medium. b. Protoplast culture 2. Regeneration of a plant from naked single cell in culture medium. c. Organ culture 3. Regeneration of plant from a organ like, anther, ovule
bud. d. Meristem culture 4. Regeneration of a plant from tissues of stem up, root up, etc.
Correct Answer

(D) a-1, b-2, c-3, d-4

Explanation

Solution: a. Cell culture is the regeneration of a plant from a single cell in a nutrient medium. b. Protoplast culture is the regeneration of a plant from a naked single cell in a culture medium. c. Organ culture is the regeneration of a plant from an organ like an anther, ovule and bud. d. Meristem culture is the regeneration of a plant from tissues of stem up, root up, etc.

[#969] Root can absorb minerals from the soil when they are in
Correct Answer

(A) Solid state

Explanation

Solution: The root can absorb minerals from the soil when they are in a Solid state. In plants, the entrance portal for mineral uptake is usually through the roots. Some mineral ions diffuse in between the cells. Plants absorb minerals in the ionic form: of nitrate (NO 3 - ), phosphate (HPO 4 - ), and potassium ions (K + )
all have difficulty crossing a charged plasma membrane. Mineral nutrient concentration in roots maybe 10,000 times more than in surrounding soil. During transport throughout a plant, minerals can exit the xylem and enter cells that require them.

[#970] Global Gene Bank of Sorghum is located at
Correct Answer

(C) ICRISAT

Explanation

Solution: Global Gene Bank of Sorghum is located at ICRISAT. The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) is an international organization that conducts agricultural research for rural development, headquartered in Patancheru (Hyderabad, Telangana, India). The ICRISAT genebank serves as a repository for the collection of germplasm of the six mandate crops - sorghum, pearl millet, finger millet, chickpea, pigeon pea, and groundnut
and five small millets - foxtail millet, little millet, Kodo millet, proso millet and barnyard millet.