Practice worksheet on metamorphosis and life cycles for biology education.

Task: Match the definition with the correct term.

#### Definitions:
1. Incomplete metamorphosis period during nymph growth.
2. Type of metamorphosis with four stages.
3. The shedding of skin during the larva stage.
4. Stage of growth when most feeding and growing takes place.
5. Develops inside an egg during metamorphosis.
6. The young stage of metamorphosis.
7. The resting stage of insect metamorphosis.
8. The outer layer of most larvae.
9. Type of metamorphosis with three stages.
10. The beginning stage of metamorphosis.

#### Terms:
A. Complete
B. Egg
C. Embryo
D. Exoskeleton
E. Incomplete
F. Instar
G. Larva
H. Molt
I. Nymph
J. Pupa

---

#### Matching Solution:
1. Incomplete metamorphosis period during nymph growth.
- Answer: I. Nymph
- Explanation: In incomplete metamorphosis, the nymph stage is a juvenile form that resembles the adult but is smaller and lacks fully developed wings.

2. Type of metamorphosis with four stages.
- Answer: A. Complete
- Explanation: Complete metamorphosis involves four stages: egg, larva, pupa, and adult.

3. The shedding of skin during the larva stage.
- Answer: H. Molt
- Explanation: Molting is the process of shedding the exoskeleton to allow for growth in insects and other arthropods.

4. Stage of growth when most feeding and growing takes place.
- Answer: G. Larva
- Explanation: The larval stage is typically the feeding and growing phase in complete metamorphosis.

5. Develops inside an egg during metamorphosis.
- Answer: C. Embryo
- Explanation: The embryo develops inside the egg before hatching.

6. The young stage of metamorphosis.
- Answer: G. Larva
- Explanation: The larva is the young stage in complete metamorphosis (e.g., caterpillar, maggot).

7. The resting stage of insect metamorphosis.
- Answer: J. Pupa
- Explanation: The pupa is the resting or transitional stage where transformation occurs (e.g., cocoon).

8. The outer layer of most larvae.
- Answer: D. Exoskeleton
- Explanation: Most larvae have an exoskeleton, which provides support and protection.

9. Type of metamorphosis with three stages.
- Answer: E. Incomplete
- Explanation: Incomplete metamorphosis has three stages: egg, nymph, and adult.

10. The beginning stage of metamorphosis.
- Answer: B. Egg
- Explanation: The egg is the starting point of metamorphosis in most insects.

---

Fill in the blanks using the word bank.

#### Word Bank:
- organs
- lifecycle
- mass
- transformation
- adult
- offspring
- cell
- form
- adaptations

---

#### Blanks Solution:
11. All living organisms go through a ________, some different than others.
- Answer: lifecycle
- Explanation: All organisms have a life cycle, which includes stages of development and reproduction.

12. Metamorphosis is the process of ________ from immaturity to an adult.
- Answer: transformation
- Explanation: Metamorphosis involves a transformation from a juvenile form to an adult form.

13. Incomplete metamorphosis is sometimes referred to as ________ or gradual.
- Answer: simple
- Explanation: Incomplete metamorphosis is also called "simple" because it involves fewer stages compared to complete metamorphosis.

14. The word metamorphosis, in Greek, means change ________.
- Answer: form
- Explanation: "Metamorphosis" comes from Greek, meaning "change of form."

15. An ________ insect usually has wings, six legs, and antennae.
- Answer: adult
- Explanation: Adult insects typically have wings, six legs, and antennae.

16. All living things survive, and adults produce ________ to replace them for when they die.
- Answer: offspring
- Explanation: Adults reproduce to ensure the survival of their species by producing offspring.

17. During the pupa stage an insect will grow new ________, muscles, and other parts.
- Answer: organs
- Explanation: During the pupal stage, new organs and structures develop to form the adult form.

18. Humans begin as a single ________ created through sexual reproduction.
- Answer: cell
- Explanation: Humans start as a single fertilized egg cell.

19. The legs of a frog make up about ¼ of the frog’s body ________.
- Answer: mass
- Explanation: The legs of a frog account for a portion of its total body mass.

20. During metamorphosis, each stage includes ________ to help species survive.
- Answer: adaptations
- Explanation: Each stage of metamorphosis involves adaptations that enhance survival and development.

---

Final Answers:

#### Matching:
1. I
2. A
3. H
4. G
5. C
6. G
7. J
8. D
9. E
10. B

#### Fill in the blanks:
11. lifecycle
12. transformation
13. simple
14. form
15. adult
16. offspring
17. organs
18. cell
19. mass
20. adaptations

Final Answer:
\boxed{
\text{Matching: 1-I, 2-A, 3-H, 4-G, 5-C, 6-G, 7-J, 8-D, 9-E, 10-B}
\text{Blanks: lifecycle, transformation, simple, form, adult, offspring, organs, cell, mass, adaptations}
}