The type of fruit that develops from a single flower with multiple carpels fused together is: MCQ with Answer and Explanation

Explanation:
Phototropism is the directional growth of a plant organ in response to light, typically positive in shoots. Geotropism (gravitropism) is the growth response to gravity, with roots showing positive geotropism (growing down) and shoots negative geotropism (growing up). Thigmotropism is the growth response to touch or physical contact, seen in climbing plants like vines, not water (which is hydrotropism). Thus, statements 1 and 2 are correct.

Explanation:
Artificial insemination (AI) is a widely used reproductive technology in cattle breeding, allowing the use of superior bull semen to improve the genetic merit of the herd without keeping the bull. Multiple Ovulation Embryo Transfer (MOET) involves stimulating a superior female to produce multiple eggs, fertilizing them, and transferring the embryos to surrogate mothers, rapidly increasing the number of high-quality offspring. Crossbreeding involves mating animals of different breeds to combine desirable traits and increase heterozygosity, thereby increasing, not reducing, genetic diversity. Thus, statements 1 and 2 are correct.

Explanation:
The umbilical vein carries oxygen-rich and nutrient-rich blood from the placenta to the fetal circulation. The two umbilical arteries carry deoxygenated blood and waste from the fetus to the placenta. In the adult, veins typically carry deoxygenated blood, but umbilical vein is an exception.