Genetics And Plant Breeding - Study Mode
[#111] The hydrostatic pressure resulting from the entry of water into a cell due to osmosis is known as
Correct Answer
(C) Osmotic pressure
Explanation
Solution: The hydrostatic pressure resulting from the entry of water into a cell due to osmosis is known as Osmotic pressure. Osmotic pressure is defined as the pressure that must be applied to the solution side to stop fluid movement when a semipermeable membrane separates a solution from pure water. Whereas hydrostatic pressure is the pressure exerted by a fluid at equilibrium at any point in time due to the force of gravity.
[#112] The inheritance of acquired characters was proposed by
Correct Answer
(B) Lamarckism
Explanation
Solution: The inheritance of acquired characters was proposed by Lamarckism. Lamarckism, also known as Lamarckian inheritance or neo-Lamarckism, is the notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime. It is also called the inheritance of acquired characteristics. The idea is named after the French zoologist Jean-Baptiste Lamarck (1744 - 1829), who incorporated the classical era theory of soft inheritance into his theory of evolution.
[#113] Cabbage, cauliflower, broccoli have been derived from wild cabbage which still grows in coastal regions of
Correct Answer
(C) Europe and North Africa
Explanation
Solution: Cabbage, cauliflower, and broccoli have been derived from wild cabbage which still grows in coastal regions of Europe and North Africa. wild cabbage, native to coastal southern and western Europe, is a hardy plant with a high tolerance for salt and lime. It is a plant species from the family Brassicaceae that includes many common cultivars used as vegetables, such as cabbage, broccoli, cauliflower, kale, Brussels sprouts, collard greens, Savoy cabbage and kohlrabi.
[#114] In wheat cross-pollination is possible
Correct Answer
(A) 15%
Explanation
Solution: In wheat, cross-pollination is possible at 15%. Wheat is a self-pollinating crop that produces seed when pollen from anthers fertilizes the receptive ovary in the same flower of a single-parent plant. Hybrid wheat, where the seed is produced from two different parent plants, requires cross-pollination which is rare in nature, possibly 15%.
[#115] Contamination permitted in maize is
Correct Answer
(A) 1%
Explanation
Solution: Contamination permitted in maize is 1%. Aflatoxin contamination of maize exhibits a serious threat to human and animal health over the past few decades. Heat and drought stress can cause seed coat fractures and increase the opportunity for infection to occur. Aflatoxin can develop within 24 hours in mold- and fungi-infected corn stored under these conditions. To protect the safety of food commodities, regular monitoring for aflatoxins in food is necessary.