Horticulture - Study Mode

[#281] The best temperature for storing tomato fruits
Correct Answer

(C) 12° - 15°C

Explanation

Solution: The best temperature for storing tomato fruits is 12° - 15°C. Optimal ripening conditions for tomatoes are between 18°C and 21°C. However, storage is frequently performed at low temperatures ( 12° - 15°C ) to delay ripening, limit post-harvest losses and extend shelf life.

[#282] Sweet corn belongs to the family
Correct Answer

(C) Poaceae

Explanation

Solution: Sweet corn belongs to the family Poaceae . Poaceae or Gramineae is a large ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns and pastures. Corn, Zea mays, belongs to the Poaceae family, and while eaten sometimes as a vegetable and sometimes as a grain, it is classified by botanists as a fruit, as are tomatoes, green peppers, cucumbers, zucchini and other squashes.

[#283] Browning of cut apples is due to
Correct Answer

(D) Enzymes

Explanation

Solution: Browning of cut apples is due to enzymes . This unappetizing phenomenon is actually due to a chain of biochemical reactions known as “enzymatic browning.” When an apple is cut (or bruised), oxygen is introduced into the injured plant tissue. When oxygen is present in cells, polyphenol oxidase (PPO) enzymes in the chloroplasts rapidly oxidize phenolic compounds naturally present in the apple tissues to o-quinones, colorless precursors to brown-colored secondary products.

[#284] Bitter principle in cucurbits is due to
Correct Answer

(A) Cucurbitacins

Explanation

Solution: The bitter principle in cucurbits is due to Cucurbitacins . The Cucurbitaceae family has the highest number of plant species which is cultivated by humans, in Cucurbitaceae possess some chemical substance that gives a bitter taste to the fruit, the chemical substance is cucurbitacin and it is chemically classified as triterpenes. The cucurbitacins B and E are the main bitter principles in all seedlings. The biogenesis of the cucurbitacins, the taxonomy of the family and the genetics of bitterness are discussed in the light of these results.

[#285] Gladiolus belongs to the family
Correct Answer

(A) Iridaceae

Explanation

Solution: Gladiolus belongs to the family Iridaceae . Gladiolus is a genus of perennial cormous flowering plants in the iris family, Iridaceae. Gladioli grow from round, symmetrical corms that are enveloped in several layers of brownish, fibrous tunics. Their stems are generally unbranched, producing 1 to 9 narrow, sword-shaped, longitudinal grooved leaves, enclosed in a sheath.