Year 7 Reproduction Worksheet - Intermediate

Year 7 Reproduction worksheet for Year 7 (Key Stage 3 / Year 7-9 (Ages 11-14)). Intermediate level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.

Science•Key Stage 3 / Year 7-9 (Ages 11-14)•Reproductionintermediate

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Reproduction: From Fertilisation to New Life

Year 7 Science | Ages 11–12 | Intermediate

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Instructions: Complete the five activities in order. Use the information given, scientific vocabulary and clear explanations; show your reasoning where appropriate. Reproduction can be discussed respectfully and scientifically: people develop at different rates, and puberty is a normal part of growing up.

Human Reproductive Systems

Use your knowledge of the roles of reproductive organs. Answer in complete scientific terms where possible. For each question, explain the function rather than simply naming an organ.

1. Which organ produces sperm cells?

2. Which organ produces egg cells and releases them during ovulation?

3. What is the name of the tube that carries an egg from an ovary towards the uterus?

4. What is the name of the organ where a developing embryo can grow during pregnancy?

Puberty and Adolescence

Read each statement and identify the relevant scientific idea. Changes during puberty vary between individuals; these questions focus on biological processes, not on judging how quickly or in what order someone develops.

1. Hormones are chemical messengers carried in the blood. What is one role of hormones in triggering changes at puberty?

2. Name one physical change that can occur during puberty in people of any sex.

3. Which reproductive process begins when the ovaries start releasing mature egg cells as part of a cycle?

4. Give one reason why the timing and order of puberty changes can differ between individuals.

Menstrual Cycle, Fertilisation and Gestation

Use the cycle information and your science knowledge to answer. Fertilisation is the joining of the nuclei of a sperm cell and an egg cell; gestation is the period of development before birth.

Stage	What happens
1	The uterus lining breaks down and leaves the body
2	The uterus lining builds up again
3	An egg is released from an ovary (ovulation)
4	The lining is maintained if a fertilised egg implants

1. Which stage describes ovulation?

2. What happens to the uterus lining during Stage 1?

3. Where does fertilisation usually take place in the human reproductive system?

4. What is gestation?

5. Explain why a fertilised egg needs to implant in the uterus lining.

Flower Structure and Pollination

Pollination is the transfer of pollen from an anther to a stigma. Use the word bank to complete the statements, then answer the final question. Each word in the bank is used once.

Word bank: anther, stigma, ovary, pollination

1. The __________ produces pollen.

2. The __________ receives pollen during pollination.

3. The transfer of pollen from anther to stigma is called __________.

4. The flower part that contains ovules is the __________.

5. Give one way pollen can be transferred between flowers.

Seed Formation and Dispersal

Apply the sequence of events in flowering-plant reproduction. Keep answers concise but include the key scientific idea in each response.

1. After fertilisation in a flowering plant, what does an ovule develop into?

2. After fertilisation, what does the ovary usually develop into?

3. A dandelion seed has a light, feathery structure. Name its likely method of dispersal and explain how that structure helps.

4. A sweet, fleshy fruit is eaten by an animal, and its seeds are later deposited elsewhere. Name this method of seed dispersal.

Answer Key

Activity 1: 1. Testes; 2. Ovary; 3. Oviduct (fallopian tube); 4. Uterus

Activity 2: 1. Hormones trigger or regulate changes involved in puberty and reproductive maturity; 2. Any valid example, such as growth spurt, body hair growth, or skin becoming oilier; 3. Menstrual cycle; 4. Individuals vary in factors such as inherited characteristics and hormone timing (accept other scientifically appropriate explanations).

Activity 3: 1. Stage 3; 2. It breaks down and leaves the body; 3. Oviduct (fallopian tube); 4. The period during which an embryo and then fetus develop in the uterus before birth; 5. Implantation allows the developing embryo to become attached to the uterus lining and receive support and nutrients.

Activity 4: 1. Anther; 2. Stigma; 3. Pollination; 4. Ovary; 5. Wind or an animal (including insects) can transfer pollen.

Activity 5: 1. A seed; 2. A fruit; 3. Wind dispersal; its light, feathery structure helps it be carried by the wind; 4. Animal dispersal (by eating the fruit and later depositing the seeds).