Educational worksheet on human reproduction, including diagrams of reproductive organs and developmental stages.

Let's solve the problem step by step based on the diagram and questions provided.

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Question 1a: Label the parts of the male and female reproductive system

We are given a diagram showing both male and female reproductive systems. Let's identify the labeled parts:

#### Male Reproductive System (Left Side):
- The top structure (large, funnel-shaped) is the seminal vesicle or prostate gland, but more likely here it’s part of the vas deferens leading into the ejaculatory duct.
- But looking at the two oval structures at the bottom, these are clearly the testes.
- The tube-like structure going from testis to the top is the vas deferens.
- The structure at the top (bulbous) is the prostate gland.

So:
- Top left box: Vas deferens
- Bottom left box (pointing to oval): Testes

#### Female Reproductive System (Right Side):
- The oval structure at the end of the tube is the ovary.
- The tube connecting ovary to uterus is the fallopian tube.
- The large pear-shaped organ is the uterus.
- The lower narrow tube is the vagina.

So:
- Top right box (pointing to ovary): Ovary
- Bottom right box (pointing to lower part): Vagina

> ✔ Final labels:
> - Left diagram:
> - Top: Vas deferens
> - Bottom: Testes
> - Right diagram:
> - Top: Ovary
> - Bottom: Vagina

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Question 1b: Name the parts that produce sperm and egg

| Parts of human reproductive system | Function |
|------------------------------------|----------|
| Ovaries | To produce eggs |
| Testes | To produce sperm |

✔ Answer:
- Produces eggs → Ovaries
- Produces sperm → Testes

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Question 1c: Stages in human development

The diagram shows:
1. Zygote → single cell after fertilization
2. → Embryo → early stage of development (after zygote divides)
3. → Fetus → later stage when organs develop
4. → Baby → born infant

✔ So the correct sequence is:

Zygote → Embryo → Fetus → Baby

> Fill in the blanks:
> - First blank: Embryo
> - Second blank: Fetus

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✔ Final Answers:

#### a) Labels:
- Male side (left):
- Top: Vas deferens
- Bottom: Testes
- Female side (right):
- Top: Ovary
- Bottom: Vagina

#### b) Table:
| Parts of human reproductive system | Function |
|------------------------------------|------------------|
| Ovaries | To produce eggs |
| Testes | To produce sperm |

#### c) Stages of development:
Zygote → Embryo → Fetus → Baby

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This completes the solution with clear explanations.