Genetics And Plant Breeding - Study Mode
[#256] In maize, resistance to European corn borer is associated with
Correct Answer
(B) High DIMBOA in leaves
Explanation
Solution: In maize, resistance to European corn borer is associated with High DIMBOA in leaves. DIMBOA is a powerful antibiotic present in maize, wheat, rye, and related grasses, DIMBOA was first identified in maize in 1962 as the "corn sweet substance". Etiolated maize seedlings have a very sweet, almost saccharin-like taste due to their high DIMBOA content.
[#257] Fruit type of mustard is
Correct Answer
(C) Siliqua
Explanation
Solution: The fruit type of mustard is Siliqua. Silique is any dry fruit that separates at maturity into two or four segments called valves, leaving a persistent partition that bears the seeds. It is a type of fruit (seed capsule) having two fused carpels with the length being more than three times the width. When the length is less than three times the width of the dried fruit it is referred to as a silicle. The valves remain connected at the top. A typical silique is an elongated capsule, such as in cabbage.
[#258] The Azure blue tag is given for
Correct Answer
(C) Certified seed
Explanation
Solution: The Azure blue tag is given for Certified seeds. The progeny of foundation seed is produced by registered seed growers under the supervision of seed certification agencies to maintain the seed quality as per minimum seed certification standards. A blue colour certificate is issued by a seed certification agency for this category of seed.
[#259] The male sterile line is represented as
Correct Answer
(B) A-line
Explanation
Solution: The male sterile line is represented as A-line. Male sterility is characterized by nonfunctional pollen grains, while female gametes function normally. Inability to produce or to release viable or functional pollen as. a result of the failure of formation or development of functional. CMS technology relies on three lines: the male sterile line (A) line, the cognate maintainer line (B) line, and the restorer line (R) line. A line is a line or population which is male-sterile. Whereas the B line is a male fertile line or population capable of maintaining male sterility.
[#260] Flowers having both androecium and gynoecium are
Correct Answer
(C) Hermaphrodite
Explanation
Solution: Flowers having both androecium and gynoecium are Hermaphrodites. A hermaphrodite is an organism that has both kinds of reproductive organs and can produce both gametes associated with the male and female sexes. A bisexual flower or hermaphrodite flower possesses both male (pollen-producing) and female (seed-producing) parts.