LIFE CYCLES

PRERNA FOR IAS

LIFE CYCLES

1. Life Cycle of a Frog

The life cycle of a frog begins with eggs laid in water. These eggs hatch into tadpoles, which gradually develop legs and lungs. The tadpole transforms into a froglet and finally becomes an adult frog. This process involves significant physical changes and is known as metamorphosis.

2. Eggs of a Frog

Frog eggs are usually laid in water in large clusters. They are surrounded by a jelly-like coating that protects them from predators and environmental conditions. Inside each egg, an embryo develops until it hatches into a tadpole. Eggs represent the first stage in the frog's life cycle.

3. Tadpole

A tadpole is the larval stage of a frog. It lives entirely in water and breathes through gills. Tadpoles have tails for swimming and feed mainly on aquatic plants. As they grow, they develop legs and lungs, preparing for their transformation into young frogs.

4. Tadpole with Legs

As a tadpole grows, it develops hind legs followed by front legs. During this stage, lungs begin to function, and the tail gradually shrinks. The tadpole starts adapting to life both in water and on land. This stage is an important part of frog metamorphosis.

5. Froglet

A froglet is a young frog that resembles an adult frog but still has a small tail. It can live both on land and in water. During this stage, the tail continues to disappear, and the frog develops stronger legs and body structures needed for adult life.

6. Adult Frog

The adult frog is the final stage of the frog life cycle. It has fully developed lungs and strong legs for jumping and swimming. Adult frogs reproduce by laying eggs in water, beginning the cycle again. They play an important role in controlling insect populations within ecosystems.

7. Life Cycle of a Butterfly

The butterfly life cycle consists of four stages: egg, larva, pupa, and adult butterfly. This process is called complete metamorphosis because the organism undergoes dramatic physical changes at each stage. The life cycle allows butterflies to grow, reproduce, and continue their species successfully.

8. Butterfly Egg