Q2
1 markVery Short AnswerSection A

List two functions of ovary of human female reproductive system.

How do Organisms Reproduce?
Human Female Reproductive System
Official Answer

The two main functions of the ovary in the human female reproductive system are:

  1. Production of female gametes (germ-cells): The ovaries produce the female reproductive cells called eggs or ova.
  2. Secretion of female sex hormones: The ovaries secrete hormones such as estrogen and progesterone, which are responsible for the development of secondary sexual characteristics in females at puberty and the regulation of the menstrual cycle.
female gameteseggsovaestrogenprogesteronehormones

Marking Scheme

  • 1Production of female gametes (eggs/ova): 0.5 Marks
  • 2Secretion of female sex hormones (estrogen/progesterone): 0.5 Marks

Hint

Think about what gametes are produced by females and what hormones control female puberty and the menstrual cycle.

Quick Oral Answer

The two main functions of the ovary are the production of female gametes (eggs) and the secretion of female sex hormones like estrogen and progesterone.

Analysis & Explanation

The ovaries are the primary female sex organs. They perform a dual function: an exocrine function (producing the female gametes or eggs) and an endocrine function (secreting hormones like estrogen and progesterone). Estrogen is responsible for secondary sexual characteristics at puberty, while progesterone helps maintain pregnancy and regulates the menstrual cycle.

Common Mistakes

  1. 1Confusing the functions of the ovary with those of the uterus (such as implantation or nourishment of the fetus).
  2. 2Mentioning male hormones like testosterone instead of estrogen/progesterone.

Interesting Facts

At birth, a female's ovaries already contain all the primary oocytes (about 1-2 million) she will ever have, and no new eggs are formed after birth.

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2016?

This question carries 1 mark in the CBSE Class 10 Science 2016 examination.

Which chapter does this question come from in Science?

This question is from the chapter "How do Organisms Reproduce?" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Human Female Reproductive System" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2016 paper?

This is a Very Short Answer question from Section A in the CBSE Class 10 Science 2016 paper.