Question

Classify the following hormones as Plant Hormone (P) or Animal Hormone (A).
I. Progesterone
II. Thyroxine
III. Auxin
IV. Adrenaline

• A. I – (P), II – (A), III – (P), IV – (P)
• B. I – (A), II – (A), III – (P), IV – (A)
• C. I – (A), II – (A), III – (A), IV – (P)
• D. I – (P), II – (P), III – (P), IV – (P)

Answer 1

The correct option is B I – (A), II – (A), III – (P), IV – (A)

• Progesterone is secreted by the corpus luteum of the ovary. It is required for the maintenance of pregnancy and is essential for the maintenance of endometrium.
• Thyroxine is secreted by the thyroid gland and maintains the growth rate and the metabolic activity of the body.
• Auxin is a plant hormone and is responsible for the cell elongation. It is also involved in the differentiation of roots and shoots.
• Adrenaline is a hormone secreted by the adrenal glands. It is involved in the fight or flight response of the body.