Horticulture - Study Mode

[#716] Apple crop flowers during
Correct Answer

(D) March - April

Explanation

Solution: Apple crop flowers during March - April . Apple blossoms typically bloom anywhere from early spring to late summer. Apple trees (Malus domestica) provide fragrant blossoms in the spring, light shade through the summer and tasty fruit in fall. The buds that will become your fruit begin to appear after the apple tree flowers.

[#717] Santa rosa is a popular variety of
Correct Answer

(A) Plum

Explanation

Solution: Santa rosa is a popular variety of Plum . It is a Japanese variety of medium-sized fruit with sweet and red fleshed pulp and deep red skin. It is named after its birthplace and was bred in 1906 by Luther Burbank in his Santa Rosa plant research centre. It is complemented by a hint of tartness in the skin, which serves to balance out the sugars for a perfect blend of flavor. This Japanese plum variety makes a stunning ornamental tree with its showy, pinkish white blossoms in the spring.

[#718] Freezing tolerant rootstock of citrus is
Correct Answer

(B) C. unishu

Explanation

Solution: The freezing tolerant rootstock of citrus is C. unishu. Citrus unshiu is a semi-seedless and easy-peeling citrus species, also known as cold hardy mandarin and tangerine. These are cold-hardy and when planted in colder locations, the fruit becomes sweeter from the colder temperatures. A mature satsuma tree can survive down to -9°C (15°F) or even -11°C (12°F) for a few hours. It is usually seedless, but it can be grown from seed, which takes about eight years until the first fruits are produced or grafted onto other citrus rootstocks, such as trifoliate orange.

[#719] Bitter gourd witches broom is caused by
Correct Answer

(A) Virus

Explanation

Solution: Bitter gourd witches broom is caused by Virus . Witches' broom is a deformity in a woody plant, typically a tree, where the natural structure of the plant is changed. A dense mass of shoots grows from a single point, with the resulting structure resembling a broom or a bird's nest. It is sometimes caused by pathogens. The normal hierarchy of buds is interrupted, and apices grow indiscriminately. This can be caused by cytokinin, a phytohormone that interferes with growth regulation.

[#720] Many fold effects of a gene refers to
Correct Answer

(C) Pleiotropy

Explanation

Solution: Many fold effects of a gene are referred to as Pleiotropy. “Pleiotropy” refers to the phenomenon in which a single locus affects two or more unrelated phenotypic traits and is often identified as a single mutation that affects two or more wild-type traits. It refers to the effect that mutations in the same gene may lead to multiple, seemingly unrelated diseases. One gene controls the expression of several phenotypic traits. Phenotypes are traits that are physically expressed such as color, body shape and height.