Correct option is D
The correct answer is Progesterone.
· Ovaries are the primary sex organ in females, producing ova (female gametes) and female sex hormones.
· A pair of ovaries is located in the pelvic cavity (in the abdomen).
· Ovaries produce two groups of steroid hormones: oestrogen and progesterone.
· Progesterone:
· Secreted by the ovaries.
· Produced in higher amounts during pregnancy.
· Supports pregnancy by forming the placenta and preventing uterine contractions.
Information Booster
· Hormones are non-nutrient chemicals produced in trace amounts and act as intracellular messengers.
· The first hormone was discovered by William M. Bayliss and Ernest H. Starling in 1903.
· Hormones are responsible for regulating biological processes in the body.
· Organized endocrine glands secrete many molecules in addition to hormones.
· Vertebrates have a large number of chemicals acting as hormones for coordination, while invertebrates possess a very simple endocrine system with few hormones.
Additional Information:
Insulin:
· Insulin hormone is secreted by the endocrine pancreas.
· It plays a major role in the regulation of glucose levels in the blood.
· This hormone stimulates the conversion of glucose to glycogen in the target cells.
Adrenaline:
· Adrenaline hormone is secreted by the adrenal gland.
· It increases alertness, causes pupillary dilation, piloerection (raising of hairs), sweating, and prepares the body for "fight or flight" responses.
Melatonin:
· Melatonin hormone is secreted by the pineal gland.
· It plays a very important role in the regulation of 24-hour (diurnal) rhythms, such as the sleep-wake cycle, body temperature, and other biological rhythms.